10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

x Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended September 30, 2012

¨ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the Transition Period From              to             .

Commission file number 001-32336 (Digital Realty Trust, Inc.)

                                             000-54023 (Digital Realty Trust, L.P.)

DIGITAL REALTY TRUST, INC.

DIGITAL REALTY TRUST, L.P.

(Exact name of registrant as specified in its charter)

Maryland (Digital Realty Trust, Inc.) Maryland (Digital Realty Trust, L.P.)	26-0081711 20-2402955
(State or other jurisdiction of incorporation or organization)	(IRS employer identification number)
Four Embarcadero Center, Suite 3200 San Francisco, CA	94111
(Address of principal executive offices)	(Zip Code)

(415) 738-6500

(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Digital Realty Trust, Inc.	Yes  x      No   ¨
Digital Realty Trust, L.P.	Yes  x      No   ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).

Digital Realty Trust, Inc.	Yes  x      No   ¨
Digital Realty Trust, L.P.	Yes  x      No   ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Digital Realty Trust, Inc.:

Large accelerated filer	x	Accelerated filer	¨
Non-accelerated filer	¨  (Do not check if a smaller reporting company)	Smaller reporting company	¨

Digital Realty Trust, L.P.:

Large accelerated filer	¨	Accelerated filer	¨
Non-accelerated filer	x  (Do not check if a smaller reporting company)	Smaller reporting company	¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Digital Realty Trust, Inc.	Yes  ¨      No   x
Digital Realty Trust, L.P.	Yes  ¨      No   x

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date

Digital Realty Trust, Inc.:

Class	Outstanding at October 31, 2012
Common Stock, $.01 par value per share	123,354,511

EXPLANATORY NOTE

This report combines the quarterly reports on Form 10-Q for the quarter ended September 30, 2012 of Digital Realty Trust, Inc., a Maryland corporation, and Digital Realty Trust, L.P., a Maryland limited partnership, of which Digital Realty Trust, Inc. is the sole general partner. Unless otherwise indicated or unless the context requires otherwise, all references in this report to “we,” “us,” “our,” “our company” or “the company” refer to Digital Realty Trust, Inc. together with its consolidated subsidiaries, including Digital Realty Trust, L.P. Unless otherwise indicated or unless the context requires otherwise, all references to “our operating partnership” or “the operating partnership” refer to Digital Realty Trust, L.P. together with its consolidated subsidiaries.

Digital Realty Trust, Inc. is a real estate investment trust, or REIT, and the sole general partner of Digital Realty Trust, L.P. As of September 30, 2012, Digital Realty Trust, Inc. owned an approximate 96.4% common general partnership interest in Digital Realty Trust, L.P. The remaining approximate 3.6% common limited partnership interests are owned by non-affiliated investors and certain directors and officers of Digital Realty Trust, Inc. As of September 30, 2012, Digital Realty Trust, Inc. owned all of the preferred limited partnership interests of Digital Realty Trust, L.P. As the sole general partner of Digital Realty Trust, L.P., Digital Realty Trust, Inc. has the full, exclusive and complete responsibility for the operating partnership’s day-to-day management and control.

We believe combining the quarterly reports on Form 10-Q of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. into this single report results in the following benefits:

• enhancing investors’ understanding of our company and our operating partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;

• eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both our company and our operating partnership; and

• creating time and cost efficiencies through the preparation of one combined report instead of two separate reports.

There are a few differences between our company and our operating partnership, which are reflected in the disclosure in this report. We believe it is important to understand the differences between our company and our operating partnership in the context of how we operate as an interrelated consolidated company. Digital Realty Trust, Inc. is a REIT, whose only material asset is its ownership of partnership interests of Digital Realty Trust, L.P. As a result, Digital Realty Trust, Inc. does not conduct business itself, other than acting as the sole general partner of Digital Realty Trust, L.P., issuing public equity from time to time and guaranteeing certain unsecured debt of Digital Realty Trust, L.P. Digital Realty Trust, Inc. itself does not issue any indebtedness but guarantees the unsecured debt of Digital Realty Trust, L.P. and certain of its subsidiaries, as disclosed in this report. Digital Realty Trust, L.P. holds substantially all the assets of the company and holds the ownership interests in the company’s joint ventures. Digital Realty Trust, L.P. conducts the operations of the business and is structured as a partnership with no publicly traded equity. Except for net proceeds from public equity issuances by Digital Realty Trust, Inc., which are generally contributed to Digital Realty Trust, L.P. in exchange for partnership units, Digital Realty Trust, L.P. generates the capital required by the company’s business through Digital Realty Trust, L.P.’s operations, by Digital Realty Trust, L.P.’s direct or indirect incurrence of indebtedness or through the issuance of partnership units.

The presentation of noncontrolling interests in operating partnership, stockholders’ equity and partners’ capital are the main areas of difference between the condensed consolidated financial statements of Digital Realty Trust, Inc. and those of Digital Realty Trust, L.P. The common limited partnership interests held by the limited partners in Digital Realty Trust, L.P. are presented as limited partners’ capital within partners’ capital in Digital Realty Trust, L.P.’s condensed consolidated financial statements and as noncontrolling interests in operating partnership within equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The common and preferred partnership interests held by Digital Realty Trust, Inc. in Digital Realty Trust, L.P. are presented as general partner’s capital within partners’ capital in Digital Realty Trust, L.P.’s condensed consolidated financial statements and as preferred stock, common stock, additional paid-in capital and accumulated dividends in excess of earnings within stockholders’ equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The differences in the presentations between stockholders’ equity and partners’ capital result from the differences in the equity issued at the Digital Realty Trust, Inc. and the Digital Realty Trust, L.P. levels.

To help investors understand the significant differences between the company and the operating partnership, this report presents the following separate sections for each of the company and the operating partnership:

• condensed consolidated financial statements;

• the following notes to the condensed consolidated financial statements:

• Debt of the company and Debt of the operating partnership;

2

• Income per Share and Income per Unit; and

• Equity and Accumulated Other Comprehensive Loss, Net of the company and Capital and Comprehensive Income of the operating partnership;

• Liquidity and Capital Resources in Management’s Discussion and Analysis of Financial Condition and Results of Operations; and

• Unregistered Sales of Equity Securities and Use of Proceeds.

This report also includes separate Item 4. Controls and Procedures sections and separate Exhibit 31 and 32 certifications for each of the company and the operating partnership in order to establish that the Chief Executive Officer and the Chief Financial Officer of each entity have made the requisite certifications and that the company and the operating partnership are compliant with Rule 13a-15 or Rule 15d-15 of the Securities Exchange Act of 1934 and 18 U.S.C. §1350.

In order to highlight the differences between the company and the operating partnership, the separate sections in this report for the company and the operating partnership specifically refer to the company and the operating partnership. In the sections that combine disclosure of the company and the operating partnership, this report refers to actions or holdings as being actions or holdings of the company. Although the operating partnership is generally the entity that enters into contracts and joint ventures and holds assets and debt, reference to the company is appropriate because the business is one enterprise and the company operates the business through the operating partnership.

As general partner with control of the operating partnership, Digital Realty Trust, Inc. consolidates the operating partnership for financial reporting purposes, and it does not have significant assets other than its investment in the operating partnership. Therefore, the assets and liabilities of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. are the same on their respective condensed consolidated financial statements. The separate discussions of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. in this report should be read in conjunction with each other to understand the results of the company on a consolidated basis and how management operates the company.

3

DIGITAL REALTY TRUST, INC. AND DIGITAL REALTY TRUST, L.P.

FORM 10-Q

FOR THE QUARTER ENDED SEPTEMBER 30, 2012

TABLE OF CONTENTS

		Page Number
PART I.	FINANCIAL INFORMATION
ITEM 1.	Condensed Consolidated Financial Statements of Digital Realty Trust, Inc.:
	Condensed Consolidated Balance Sheets as of September 30, 2012 (unaudited) and December 31, 2011		5
	Condensed Consolidated Income Statements for the three and nine months ended September 30, 2012 and 2011 (unaudited)		6
	Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2012 and 2011 (unaudited)		7
	Condensed Consolidated Statement of Equity for the nine months ended September 30, 2012 (unaudited)		8
	Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2012 and 2011 (unaudited)		9
	Condensed Consolidated Financial Statements of Digital Realty Trust, L.P.:
	Condensed Consolidated Balance Sheets as of September 30, 2012 (unaudited) and December 31, 2011		11
	Condensed Consolidated Income Statements for the three and nine months ended September 30, 2012 and 2011 (unaudited)		12
	Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2012 and 2011 (unaudited)		13
	Condensed Consolidated Statement of Capital for the nine months ended September 30, 2012 (unaudited)		14
	Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2012 and 2011 (unaudited)		15
	Notes to Condensed Consolidated Financial Statements of Digital Realty Trust, Inc. and Digital Realty Trust, L.P.		17
ITEM 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		52
ITEM 3.	Quantitative and Qualitative Disclosures About Market Risk		80
ITEM 4.	Controls and Procedures (Digital Realty Trust, Inc.)		83
	Controls and Procedures (Digital Realty Trust, L.P.)		83
PART II.	OTHER INFORMATION		84
ITEM 1.	Legal Proceedings		84
ITEM 1A.	Risk Factors		84
ITEM 2.	Unregistered Sales of Equity Securities and Use of Proceeds		84
ITEM 3.	Defaults Upon Senior Securities		84
ITEM 4.	Mine Safety Disclosures		84
ITEM 5.	Other Information		84
ITEM 6.	Exhibits		85
	Signatures		86
	Exhibit Index		87

4

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except share and per share data)

	September 30, 2012			December 31, 2011
	(unaudited)
ASSETS
Investments in real estate:
Properties:
Land	$	621,279		$	555,113
Acquired ground leases		13,492			6,214
Buildings and improvements		7,363,430			5,253,754
Tenant improvements		383,627			303,502
Total investments in properties		8,381,828			6,118,583
Accumulated depreciation and amortization		(1,116,600	)		(900,044	)
Net investments in properties		7,265,228			5,218,539
Investment in unconsolidated joint ventures		48,882			23,976
Net investments in real estate		7,314,110			5,242,515
Cash and cash equivalents		76,115			40,631
Accounts and other receivables, net of allowance for doubtful accounts of $2,362 and $2,436 as of September 30, 2012 and December 31, 2011, respectively		146,025			90,580
Deferred rent		301,535			246,815
Acquired above market leases, net		68,269			29,701
Acquired in place lease value and deferred leasing costs, net		492,393			335,381
Deferred financing costs, net		32,163			29,849
Restricted cash		43,217			55,165
Other assets		38,771			27,929
Total assets	$	8,512,598		$	6,098,566
LIABILITIES AND EQUITY
Global revolving credit facility	$	526,372		$	275,106
Unsecured term loan		754,935			—
Unsecured senior notes, net of discount		1,737,881			1,441,072
Exchangeable senior debentures		266,400			266,400
Mortgage loans, net of premiums		794,485			947,132
Other secured loan		—			10,500
Accounts payable and other accrued liabilities		616,042			315,133
Accrued dividends and distributions		—			75,455
Acquired below market leases, net		152,876			85,819
Security deposits and prepaid rents		136,051			101,538
Total liabilities		4,985,042			3,518,155
Commitments and contingencies
Equity:
Stockholders’ Equity:
Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:
Series C Cumulative Convertible Preferred Stock, 4.375%, $0 and $128,159 liquidation preference, respectively ($25.00 per share), 0 and 5,126,364 shares issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		—			123,820
Series D Cumulative Convertible Preferred Stock, 5.500%, $127,447 and $174,426 liquidation preference, respectively ($25.00 per share), 5,097,898 and 6,977,055 shares issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		123,250			168,669
Series E Cumulative Redeemable Preferred Stock, 7.000%, $287,500 and $287,500 liquidation preference, respectively ($25.00 per share), 11,500,000 and 11,500,000 shares issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		277,172			277,292
Series F Cumulative Redeemable Preferred Stock, 6.625%, $182,500 and $0 liquidation preference, respectively ($25.00 per share), 7,300,000 and 0 shares issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		176,191			—
Common Stock: $0.01 par value, 165,000,000 shares authorized, 123,261,390 and 106,039,279 shares issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		1,228			1,057
Additional paid-in capital		3,536,463			2,496,651
Accumulated dividends in excess of earnings		(610,337	)		(488,692	)
Accumulated other comprehensive loss, net		(24,524	)		(55,880	)
Total stockholders’ equity		3,479,443			2,522,917
Noncontrolling Interests:
Noncontrolling interests in operating partnership		44,141			45,057
Noncontrolling interests in consolidated joint ventures		3,972			12,437
Total noncontrolling interests		48,113			57,494
Total equity		3,527,556			2,580,411
Total liabilities and equity	$	8,512,598		$	6,098,566

See accompanying notes to the condensed consolidated financial statements.

5

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED INCOME STATEMENTS

(unaudited, in thousands, except share and per share data)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Operating Revenues:
Rental	$	260,052		$	206,846		$	717,809		$	606,447
Tenant reimbursements		78,878			56,656			197,162			159,801
Construction management		2,497			9,372			6,903			24,948
Other		1,052			602			7,457			902
Total operating revenues		342,479			273,476			929,331			792,098
Operating Expenses:
Rental property operating and maintenance		106,660			82,164			274,081			226,224
Property taxes		17,982			13,055			49,793			40,488
Insurance		2,463			1,961			6,953			6,010
Construction management		623			7,391			1,412			20,327
Depreciation and amortization		101,840			79,047			274,835			229,813
General and administrative		14,409			14,600			43,768			41,082
Transactions		504			3,632			5,789			5,053
Other		923			—			1,260			90
Total operating expenses		245,404			201,850			657,891			569,087
Operating income		97,075			71,626			271,440			223,011
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures		1,520			1,390			6,402			3,656
Interest and other income		83			2,218			2,008			2,862
Interest expense		(41,047	)		(37,078	)		(116,758	)		(112,494	)
Tax expense		(710	)		(461	)		(2,637	)		(1,122	)
Loss from early extinguishment of debt		—			(6	)		(303	)		(984	)
Net income		56,921			37,689			160,152			114,929
Net income attributable to noncontrolling interests		(1,529	)		(1,345	)		(4,384	)		(4,380	)
Net income attributable to Digital Realty Trust, Inc.		55,392			36,344			155,768			110,549
Preferred stock dividends		(9,777	)		(4,436	)		(28,921	)		(15,671	)
Net income available to common stockholders	$	45,615		$	31,908		$	126,847		$	94,878
Net income per share available to common stockholders:
Basic	$	0.37		$	0.32		$	1.12		$	0.99
Diluted	$	0.37		$	0.31		$	1.12		$	0.97
Weighted average common shares outstanding:
Basic		122,026,421			100,588,235			112,995,512			96,137,611
Diluted		122,353,511			101,912,342			113,275,221			97,316,650

See accompanying notes to the condensed consolidated financial statements.

6

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited, in thousands)

	Three months ended September 30,						Nine months ended September 30,
	2012			2011			2012			2011
Net income	$	56,921		$	37,689		$	160,152		$	114,929
Other comprehensive income (loss):
Foreign currency translation adjustments		34,985			(35,580	)		36,286			(10,543	)
Decrease in fair value of interest rate swaps		(3,906	)		(2,089	)		(6,794	)		(3,036	)
Reclassification to interest expense from interest rate swaps		1,174			1,293			2,964			4,467
Comprehensive income		89,174			1,313			192,608			105,817
Comprehensive (income) loss income attributable to noncontrolling interests		(2,605	)		207			(5,484	)		(4,180	)
Comprehensive income attributable to Digital Realty Trust, Inc.	$	86,569		$	1,520		$	187,124		$	101,637

See accompanying notes to the condensed consolidated financial statements.

7

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENT OF EQUITY

(unaudited, in thousands, except share data)

	Preferred Stock			Number of Common Shares		Common Stock		Additional Paid-in Capital			Accumulated Dividends in Excess of Earnings			Accumulated Other Comprehensive Loss, net			Total Stockholders’ Equity			Noncontrolling Interests in Operating Partnership			Noncontrolling Interests in Consolidated Joint Ventures			Total Noncontrolling Interests			Total Equity
Balance as of December 31, 2011	$	569,781			106,039,279	$	1,057	$	2,496,651			$ (488,692)			$ (55,880)		$	2,522,917		$	45,057		$	12,437		$	57,494		$	2,580,411
Conversion of units to common stock		—			460,192		5		4,893			—			—			4,898			(4,898	)		—			(4,898	)		—
Issuance of restricted stock, net of forfeitures		—			93,276		—		—			—			—			—			—			—			—			—
Net proceeds from sale of common stock		—			12,456,818		125		859,786			—			—			859,911			—			—			—			859,911
Exercise of stock options		—			207,550		1		4,172			—			—			4,173			—			—			—			4,173
Issuance of preferred stock, net of offering costs		176,071			—		—		—			—			—			176,071			—			—			—			176,071
Conversion of preferred stock		(169,239	)		4,004,275		40		169,199			—			—			—			—			—			—			—
Amortization of unearned compensation regarding share based awards		—			—		—		12,339			—			—			12,339			—			—			—			12,339
Reclassification of vested share based awards		—			—		—		(8,544	)		—			—			(8,544	)		8,544			—			8,544			—
Dividends declared on preferred stock		—			—		—		—			(28,921	)		—			(28,921	)		—			—			—			(28,921	)
Dividends and distributions on common stock and common and incentive units		—			—		—		—			(248,492	)		—			(248,492	)		(10,483	)		—			(10,483	)		(258,975	)
Contributions from noncontrolling interests in consolidated joint ventures		—			—		—		—			—			—			—			—			2,323			2,323			2,323
Purchase of noncontrolling interests of a consolidated joint venture		—			—		—		(2,033	)		—			—			(2,033	)		—			(10,351	)		(10,351	)		(12,384	)
Net income		—			—		—		—			155,768			—			155,768			4,821			(437	)		4,384			160,152
Other comprehensive income—foreign currency translation adjustments		—			—		—		—			—			35,053			35,053			1,233			—			1,233			36,286
Other comprehensive income—fair value of interest rate swaps		—			—		—		—			—			(6,553	)		(6,553	)		(241	)		—			(241	)		(6,794	)
Other comprehensive income— reclassification of accumulated other comprehensive loss to interest expense		—			—		—		—			—			2,856			2,856			108			—			108			2,964
Balance as of September 30, 2012	$	576,613			123,261,390	$	1,228	$	3,536,463		$	(610,337	)	$	(24,524	)	$	3,479,443		$	44,141		$	3,972		$	48,113		$	3,527,556

See accompanying notes to the condensed consolidated financial statements.

8

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands)

	Nine Months Ended September 30,
	2012			2011
Cash flows from operating activities:
Net income	$	160,152		$	114,929
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on early extinguishment of debt-non cash portion		—			558
Equity in earnings of unconsolidated joint ventures		(6,402	)		(3,656	)
Distributions from unconsolidated joint ventures		18,573			3,250
Write-off of net assets due to early lease terminations		1,260			81
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases		226,739			181,499
Amortization of share-based unearned compensation		9,922			10,263
Recovery of doubtful accounts		(74	)		(1,090	)
Amortization of deferred financing costs		6,341			7,246
Write-off of deferred financing costs, included in net loss on early extinguishment of debt		254			85
Amortization of debt discount/premium		748			1,813
Amortization of acquired in place lease value and deferred leasing costs		48,096			48,313
Amortization of acquired above market leases and acquired below market leases, net		(7,443	)		(5,663	)
Changes in assets and liabilities:
Restricted cash		6,866			288
Accounts and other receivables		(52,851	)		(9,610	)
Deferred rent		(55,772	)		(41,220	)
Deferred leasing costs		(13,206	)		(7,200	)
Other assets		(13,107	)		(11,389	)
Accounts payable and other accrued liabilities		(7,194	)		(6,859	)
Security deposits and prepaid rents		33,634			(1,540	)
Net cash provided by operating activities		356,536			280,098
Cash flows from investing activities:
Acquisitions of real estate		(1,451,598	)		(86,567	)
Investment in unconsolidated joint ventures		(37,069	)		(382	)
Deposits paid for acquisitions of real estate		(500	)		(10,066	)
Receipt of value added tax refund		15,272			9,253
Refundable value added tax paid		(17,611	)		(17,859	)
Change in restricted cash		3,227			4,604
Improvements to and advances for investments in real estate		(596,644	)		(489,709	)
Improvement advances to tenants		(2,384	)		(7,705	)
Collection of advances from tenants for improvements		2,379			6,746
Net cash used in investing activities		(2,084,928	)		(591,685	)

See accompanying notes to the condensed consolidated financial statements.

9

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (continued)

(unaudited, in thousands)

	Nine Months Ended September 30,
	2012			2011
Cash flows from financing activities:
Borrowings on revolving credit facilities	$	1,500,520		$	883,247
Repayments on revolving credit facilities		(1,271,528	)		(1,049,182	)
Borrowings on unsecured term loan		751,985			—
Borrowings on 5.250% unsecured senior notes due 2021		—			399,100
Borrowings on 3.625% unsecured senior notes due 2022		296,052			—
Repayments on other secured loans		(10,500	)		—
Principal payments on mortgage loans		(162,548	)		(127,341	)
Principal repayments on 2026 exchangeable senior debentures		—			(88,758	)
Principal payments on unsecured notes		—			(25,000	)
Equity component settled associated with exchange of 2026 exchangeable senior debentures		—			(11,783	)
Change in restricted cash		2,011			(73	)
Payment of loan fees and costs		(8,859	)		(6,593	)
Capital contributions received from noncontrolling interests in joint ventures		2,323			119
Gross proceeds from the sale of common stock		894,221			419,619
Gross proceeds from the issuance of preferred stock		182,500			287,500
Common stock offering costs paid		(34,310	)		(6,027	)
Preferred stock offering costs paid		(6,429	)		(9,447	)
Proceeds from exercise of stock options		4,173			3,416
Payment of dividends to preferred stockholders		(28,921	)		(15,671	)
Payment of dividends to common stockholders and distributions to noncontrolling interests in operating partnership		(334,430	)		(261,286	)
Purchase of noncontrolling interests in consolidated joint ventures		(12,384	)		(53,240	)
Net cash provided by financing activities		1,763,876			338,600
Net increase in cash and cash equivalents		35,484			27,013
Cash and cash equivalents at beginning of period		40,631			11,719
Cash and cash equivalents at end of period	$	76,115		$	38,732
Supplemental disclosure of cash flow information:
Cash paid for interest, including amounts capitalized	$	135,840		$	126,664
Cash paid for income taxes		2,045			1,568
Supplementary disclosure of noncash investing and financing activities:
Change in net assets related to foreign currency translation adjustments	$	36,286		$	(10,543	)
Increase in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps		(6,794	)		(3,036	)
Noncontrolling interests in operating partnership redeemed for or converted to shares of common stock		4,898			6,560
Preferred stock converted to shares of common stock		169,239			165,160
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses		240,310			136,840
Issuance of common stock in exchange of 2026 exchangeable senior debentures, net		—			221
Accrual for contingent purchase price of Sentrum portfolio included in accounts payable and accrued expenses		87,532			—
Allocation of purchase price of real estate/investment in partnership to:
Investments in real estate	$	1,336,127		$	79,424
Acquired above market leases		44,402			178
Acquired below market leases		(80,604	)		—
Acquired in place lease value and deferred leasing costs		158,563			6,965
Mortgage loan assumed, net of premium		(6,890	)		—
Cash paid for acquisition of real estate	$	1,451,598		$	86,567

See accompanying notes to the condensed consolidated financial statements.

10

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except unit and per unit data)

	September 30, 2012			December 31, 2011
	(unaudited)
ASSETS
Investments in real estate:
Properties:
Land	$	621,279		$	555,113
Acquired ground leases		13,492			6,214
Buildings and improvements		7,363,430			5,253,754
Tenant improvements		383,627			303,502
Total investments in properties		8,381,828			6,118,583
Accumulated depreciation and amortization		(1,116,600	)		(900,044	)
Net investments in properties		7,265,228			5,218,539
Investment in unconsolidated joint ventures		48,882			23,976
Net investments in real estate		7,314,110			5,242,515
Cash and cash equivalents		76,115			40,631
Accounts and other receivables, net of allowance for doubtful accounts of $2,362 and $2,436 as of September 30, 2012 and December 31, 2011, respectively		146,025			90,580
Deferred rent		301,535			246,815
Acquired above market leases, net		68,269			29,701
Acquired in place lease value and deferred leasing costs, net		492,393			335,381
Deferred financing costs, net		32,163			29,849
Restricted cash		43,217			55,165
Other assets		38,771			27,929
Total assets	$	8,512,598		$	6,098,566
LIABILITIES AND CAPITAL
Global revolving credit facility	$	526,372		$	275,106
Unsecured term loan		754,935			—
Unsecured senior notes, net of discount		1,737,881			1,441,072
Exchangeable senior debentures		266,400			266,400
Mortgage loans, net of premiums		794,485			947,132
Other secured loan		—			10,500
Accounts payable and other accrued liabilities		616,042			315,133
Accrued dividends and distributions		—			75,455
Acquired below market leases, net		152,876			85,819
Security deposits and prepaid rents		136,051			101,538
Total liabilities		4,985,042			3,518,155
Commitments and contingencies
Capital:
Partners’ capital:
General Partner:
Series C Cumulative Convertible Preferred Units, 4.375%, $0 and $128,159 liquidation preference, respectively ($25.00 per unit), 0 and 5,126,364 units issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		—			123,820
Series D Cumulative Convertible Preferred Units, 5.500%, $127,447 and $174,426 liquidation preference, respectively ($25.00 per unit), 5,097,898 and 6,977,055 units issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		123,250			168,669
Series E Cumulative Redeemable Preferred Units, 7.000%, $287,500 and $287,500 liquidation preference, respectively ($25.00 per unit), 11,500,000 and 11,500,000 units issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		277,172			277,292
Series F Cumulative Redeemable Preferred Units, 6.625%, $182,500 and $0 liquidation preference, respectively ($25.00 per unit), 7,300,000 and 0 units issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		176,191			—
123,261,390 and 106,039,279 common units issued and outstanding as of September 30, 2012 and December 31, 2011, respectively		2,927,354			2,009,016
Limited partners, 3,131,814 and 3,405,814 common units, 1,075,028 and 1,054,473 profits interest units and 419,226 and 475,843 class C units outstanding as of September 30, 2012 and December 31, 2011, respectively		47,228			49,240
Accumulated other comprehensive loss		(27,611	)		(60,063	)
Total partners’ capital		3,523,584			2,567,974
Noncontrolling interests in consolidated joint ventures		3,972			12,437
Total capital		3,527,556			2,580,411
Total liabilities and capital	$	8,512,598		$	6,098,566

See accompanying notes to the condensed consolidated financial statements.

11

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED INCOME STATEMENTS

(unaudited in thousands, except unit and per unit data)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Operating Revenues:
Rental	$	260,052		$	206,846		$	717,809		$	606,447
Tenant reimbursements		78,878			56,656			197,162			159,801
Construction management		2,497			9,372			6,903			24,948
Other		1,052			602			7,457			902
Total operating revenues		342,479			273,476			929,331			792,098
Operating Expenses:
Rental property operating and maintenance		106,660			82,164			274,081			226,224
Property taxes		17,982			13,055			49,793			40,488
Insurance		2,463			1,961			6,953			6,010
Construction management		623			7,391			1,412			20,327
Depreciation and amortization		101,840			79,047			274,835			229,813
General and administrative		14,409			14,600			43,768			41,082
Transactions		504			3,632			5,789			5,053
Other		923			—			1,260			90
Total operating expenses		245,404			201,850			657,891			569,087
Operating income		97,075			71,626			271,440			223,011
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures		1,520			1,390			6,402			3,656
Interest and other income		83			2,218			2,008			2,862
Interest expense		(41,047	)		(37,078	)		(116,758	)		(112,494	)
Tax expense		(710	)		(461	)		(2,637	)		(1,122	)
Loss from early extinguishment of debt		—			(6	)		(303	)		(984	)
Net income		56,921			37,689			160,152			114,929
Net loss attributable to noncontrolling interests in consolidated joint ventures		45			76			437			275
Net income attributable to Digital Realty Trust, L.P.		56,966			37,765			160,589			115,204
Preferred units distributions		(9,777	)		(4,436	)		(28,921	)		(15,671	)
Net income available to common unitholders	$	47,189		$	33,329		$	131,668		$	99,533
Net income per unit available to common unitholders:
Basic	$	0.37		$	0.32		$	1.12		$	0.99
Diluted	$	0.37		$	0.31		$	1.12		$	0.97
Weighted average common units outstanding:
Basic		126,242,751			105,069,280			117,291,480			100,845,740
Diluted		126,569,841			106,393,387			117,571,189			102,024,779

See accompanying notes to the condensed consolidated financial statements.

12

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited, in thousands)

	Three months ended September 30,						Nine months ended September 30,
	2012			2011			2012			2011
Net income	$	56,921		$	37,689		$	160,152		$	114,929
Other comprehensive income (loss):
Foreign currency translation adjustments		34,985			(35,580	)		36,286			(10,543	)
Decrease in fair value of interest rate swaps		(3,906	)		(2,089	)		(6,794	)		(3,036	)
Reclassification to interest expense from interest rate swaps		1,174			1,293			2,964			4,467
Comprehensive income	$	89,174		$	1,313		$	192,608		$	105,817

See accompanying notes to the condensed consolidated financial statements.

13

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENT OF CAPITAL

(unaudited, in thousands, except unit data)

	General Partner											Limited Partners						Accumulated Other Comprehensive Loss			Noncontrolling Interests in Consolidated Joint Ventures
	Preferred Units						Common Units					Common Units
	Units			Amount			Units		Amount			Units			Amount									Total Capital
Balance as of December 31, 2011		23,603,419		$	569,781			106,039,279	$	2,009,016			4,936,130		$	49,244		$	(60,067	)	$	12,437		$	2,580,411
Conversion of limited partner common units to general partner common units		—			—			460,192		4,898			(460,192	)		(4,898	)		—			—			—
Issuance of restricted common units, net of forfeitures		—			—			93,276		—			—			—			—			—			—
Net proceeds from issuance of common units		—			—			12,456,818		859,911			—			—			—			—			859,911
Issuance of common units in connection with the exercise of stock options		—			—			207,550		4,173			—			—			—			—			4,173
Issuance of common units, net of forfeitures		—			—			—		—			150,130			—			—			—			—
Net proceeds from issuance of preferred units		7,300,000			176,071			—		—			—			—			—			—			176,071
Conversion of preferred units		(7,005,521	)		(169,239	)		4,004,275		169,239			—			—			—			—			—
Amortization of unearned compensation regarding share based awards		—			—			—		12,339			—			—			—			—			12,339
Reclassification of vested share based awards		—			—			—		(8,544	)		—			8,544			—			—			—
Distributions		—			(28,921	)		—		(248,492	)		—			(10,483	)		—			—			(287,896	)
Purchase of noncontrolling interests of a consolidated joint venture		—			—			—		(2,033	)		—			—			—			(10,351	)		(12,384	)
Contributions from noncontrolling interests in consolidated joint ventures		—			—			—		—			—			—			—			2,323			2,323
Net income		—			28,921			—		126,847			—			4,821			—			(437	)		160,152
Other comprehensive loss - foreign currency translation adjustments		—			—			—		—			—			—			36,286			—			36,286
Other comprehensive loss - fair value of interest rate swaps		—			—			—		—			—			—			(6,794	)		—			(6,794	)
Other comprehensive income - reclassification of accumulated other comprehensive loss to interest expense		—			—			—		—			—			—			2,964			—			2,964
Balance as of September 30, 2012		23,897,898		$	576,613			123,261,390	$	2,927,354			4,626,068		$	47,228		$	(27,611	)	$	3,972		$	3,527,556

See accompanying notes to the condensed consolidated financial statements.

14

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands)

	Nine Months Ended September 30,
	2012			2011
Cash flows from operating activities:
Net income	$	160,152		$	114,929
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on early extinguishment of debt-non cash portion		—			558
Equity in earnings of unconsolidated joint ventures		(6,402	)		(3,656	)
Distributions from unconsolidated joint ventures		18,573			3,250
Write-off of net assets due to early lease terminations		1,260			81
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases		226,739			181,499
Amortization of share-based unearned compensation		9,922			10,263
Recovery of doubtful accounts		(74	)		(1,090	)
Amortization of deferred financing costs		6,341			7,246
Write-off of deferred financing costs, included in net loss on early extinguishment of debt		254			85
Amortization of debt discount/premium		748			1,813
Amortization of acquired in place lease value and deferred leasing costs		48,096			48,313
Amortization of acquired above market leases and acquired below market leases, net		(7,443	)		(5,663	)
Changes in assets and liabilities:
Restricted cash		6,866			288
Accounts and other receivables		(52,851	)		(9,610	)
Deferred rent		(55,772	)		(41,220	)
Deferred leasing costs		(13,206	)		(7,200	)
Other assets		(13,107	)		(11,389	)
Accounts payable and other accrued liabilities		(7,194	)		(6,859	)
Security deposits and prepaid rents		33,634			(1,540	)
Net cash provided by operating activities		356,536			280,098
Cash flows from investing activities:
Acquisitions of real estate		(1,451,598	)		(86,567	)
Investment in unconsolidated joint ventures		(37,069	)		(382	)
Deposits paid for acquisitions of real estate		(500	)		(10,066	)
Receipt of value added tax refund		15,272			9,253
Refundable value added tax paid		(17,611	)		(17,859	)
Change in restricted cash		3,227			4,604
Improvements to and advances for investments in real estate		(596,644	)		(489,709	)
Improvement advances to tenants		(2,384	)		(7,705	)
Collection of advances from tenants for improvements		2,379			6,746
Net cash used in investing activities		(2,084,928	)		(591,685	)

See accompanying notes to the condensed consolidated financial statements.

15

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (continued)

(unaudited, in thousands)

	Nine Months Ended September 30,
	2012			2011
Cash flows from financing activities:
Borrowings on revolving credit facilities	$	1,500,520		$	883,247
Repayments on revolving credit facilities		(1,271,528	)		(1,049,182	)
Borrowings on unsecured term loan		751,985			—
Borrowings on 5.250% unsecured senior notes due 2021		—			399,100
Borrowings on 3.625% unsecured senior notes due 2022		296,052			—
Repayments on other secured loans		(10,500	)		—
Principal payments on mortgage loans		(162,548	)		(127,341	)
Principal repayments on 2026 exchangeable senior debentures		—			(88,758	)
Principal payments on unsecured notes		—			(25,000	)
Equity component settled associated with exchange of 2026 exchangeable senior debentures		—			(11,783	)
Change in restricted cash		2,011			(73	)
Payment of loan fees and costs		(8,859	)		(6,593	)
Capital contributions received from noncontrolling interests in joint ventures		2,323			119
General partner contributions		1,040,155			695,061
Payment of distributions to preferred unitholders		(28,921	)		(15,671	)
Payment of distributions to common unitholders		(334,430	)		(261,286	)
Purchase of noncontrolling interests in consolidated joint ventures		(12,384	)		(53,240	)
Net cash provided by financing activities		1,763,876			338,600
Net increase in cash and cash equivalents		35,484			27,013
Cash and cash equivalents at beginning of period		40,631			11,719
Cash and cash equivalents at end of period	$	76,115		$	38,732
Supplemental disclosure of cash flow information:
Cash paid for interest, including amounts capitalized	$	135,840		$	126,664
Cash paid for income taxes		2,045			1,568
Supplementary disclosure of noncash investing and financing activities:
Change in net assets related to foreign currency translation adjustments	$	36,286		$	(10,543	)
Increase in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps		(6,794	)		(3,036	)
Preferred units converted to common units		169,239			165,160
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses		240,310			136,840
Issuance of common units associated with exchange of 2026 exchangeable senior debentures, net		—			221
Accrual for contingent purchase price of Sentrum portfolio included in accounts payable and accrued expenses		87,532			—
Allocation of purchase price of real estate/investment in partnership to:
Investments in real estate	$	1,336,127		$	79,424
Acquired above market leases		44,402			178
Acquired below market leases		(80,604	)		—
Acquired in place lease value and deferred leasing costs		158,563			6,965
Mortgage loan assumed, net of premium		(6,890	)		—
Cash paid for acquisition of real estate	$	1,451,598		$	86,567

See accompanying notes to the condensed consolidated financial statements.

16

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

September 30, 2012 and 2011

(unaudited)

1. Organization and Description of Business

Digital Realty Trust, Inc. through its controlling interest in Digital Realty Trust, L.P. (the Operating Partnership) and the subsidiaries of the Operating Partnership (collectively, we, our, us or the Company) is engaged in the business of owning, acquiring, developing, redeveloping and managing technology-related real estate. The Company is focused on providing customer driven datacenter solutions for domestic and international tenants across a variety of industry verticals ranging from information technology and Internet enterprises, to manufacturing and financial services. As of September 30, 2012, our portfolio consisted of 110 properties, excluding three properties held as investments in unconsolidated joint ventures and land held for development, of which 91 are located throughout North America, 18 are located in Europe and one is located in Asia. We are diversified in major markets where corporate datacenter and technology tenants are concentrated, including the Boston, Chicago, Dallas, Los Angeles, New York Metro, Northern Virginia, Phoenix, San Francisco and Silicon Valley metropolitan areas in the U.S., Amsterdam, Dublin, London and Paris markets in Europe and Singapore, Sydney and Melbourne markets in the Asia Pacific region. The portfolio consists of Internet gateway and corporate datacenter properties, technology manufacturing properties and regional or national headquarters of technology companies.

The Operating Partnership was formed on July 21, 2004 in anticipation of Digital Realty Trust, Inc.’s initial public offering (IPO) on November 3, 2004 and commenced operations on that date. As of September 30, 2012, Digital Realty Trust, Inc. owns a 96.4% common interest and a 100% preferred interest in the Operating Partnership. As sole general partner, Digital Realty Trust, Inc. has control over the Operating Partnership. The limited partners of the Operating Partnership do not have rights to replace Digital Realty Trust, Inc. as the general partner nor do they have participating rights, although they do have certain protective rights.

2. Summary of Significant Accounting Policies

(a) Principles of Consolidation and Basis of Presentation

The accompanying interim condensed consolidated financial statements include all of the accounts of Digital Realty Trust, Inc., the Operating Partnership and the subsidiaries of the Operating Partnership. Intercompany balances and transactions have been eliminated.

The accompanying interim condensed consolidated financial statements are unaudited, but have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) for interim financial information and in compliance with the rules and regulations of the United States Securities and Exchange Commission. Accordingly, they do not include all of the disclosures required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments necessary for a fair presentation have been included. All such adjustments are considered to be of a normal recurring nature, except as otherwise indicated. The results of operations for the interim periods are not necessarily indicative of the results to be obtained for the full fiscal year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our annual report on Form 10-K for the year ended December 31, 2011.

The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide the following benefits:

• enhancing investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;

• eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and

• creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.

There are few differences between the Company and the Operating Partnership, which are reflected in these condensed consolidated financial statements. We believe it is important to understand the differences between the Company and the Operating Partnership in the context of how we operate as an interrelated consolidated company. Digital Realty Trust, Inc.’s only material asset is its ownership of partnership interests of the Operating Partnership. As a result, Digital Realty Trust, Inc. does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing public equity from time to time and guaranteeing certain unsecured debt of the Operating Partnership. Digital Realty Trust, Inc. itself does not hold any indebtedness but guarantees the unsecured debt of the Operating Partnership and certain of its subsidiaries, as disclosed in these notes. The Operating Partnership

17

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

holds substantially all the assets of the Company and holds the ownership interests in the Company’s joint ventures. The Operating Partnership conducts the operations of the business and is structured as a partnership with no publicly traded equity. Except for net proceeds from public equity issuances by Digital Realty Trust, Inc., which are generally contributed to the Operating Partnership in exchange for partnership units, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, by the Operating Partnership’s direct or indirect incurrence of indebtedness or through the issuance of partnership units.

The presentation of noncontrolling interests in operating partnership, stockholder’s equity and partners’ capital are the main areas of difference between the condensed consolidated financial statements of Digital Realty Trust, Inc. and those of the Operating Partnership. The common limited partnership interests held by the limited partners in the Operating Partnership are presented as limited partners’ capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as noncontrolling interests in operating partnership within equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The common and preferred partnership interests held by Digital Realty Trust, Inc. in the Operating Partnership are presented as general partner’s capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as preferred stock, common stock, additional paid-in capital and accumulated dividends in excess of earnings within stockholders’ equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The differences in the presentations between stockholders’ equity and partners’ capital result from the differences in the equity issued at the Digital Realty Trust, Inc. and the Operating Partnership levels.

To help investors understand the significant differences between the Company and the Operating Partnership, these condensed consolidated financial statements present the following separate sections for each of the Company and the Operating Partnership:

• condensed consolidated face financial statements; and

• the following notes to the condensed consolidated financial statements:

• Debt of the Company and Debt of the Operating Partnership;

• Income per Share and Income per Unit; and

• Equity and Accumulated Other Comprehensive Loss, Net of the Company and Capital and Comprehensive Income of the Operating Partnership.

In the sections that combine disclosure of Digital Realty Trust, Inc. and the Operating Partnership, these notes refer to actions or holdings as being actions or holdings of the Company. Although the Operating Partnership is generally the entity that enters into contracts and joint ventures and holds assets and debt, reference to the Company is appropriate because the business is one enterprise and the Company operates the business through the Operating Partnership.

(b) Cash Equivalents

For the purpose of the condensed consolidated statements of cash flows, we consider short-term investments with original maturities of 90 days or less to be cash equivalents. As of September 30, 2012, cash equivalents consist of investments in money market instruments.

(c) Share Based Compensation

We account for share based compensation using the fair value method of accounting. The estimated fair value of the stock options granted by us is being amortized on a straight-line basis over the vesting period of the stock options. The estimated fair value of the long-term incentive units and Class C Units (discussed in note 12(b)) granted by us is being amortized on a straight-line basis over the expected service period.

For share based compensation awards with performance conditions, we estimate the fair value of the award for each of the possible performance condition outcomes and amortize the compensation cost based on management’s projected performance outcome. In the instance management’s projected performance outcome changes prior to the final measurement date, compensation cost is adjusted accordingly.

(d) Income Taxes

Digital Realty Trust, Inc. (the Parent Company) has elected to be treated and believes that it has been organized and has operated in a manner that has enabled the Parent Company to qualify as a REIT for federal income tax purposes. As a REIT, the Parent Company generally is not required to pay federal corporate income taxes on its taxable income to the extent it is currently distributed to its stockholders.

18

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

However, qualification and taxation as a REIT depend upon the Parent Company’s ability to meet the various qualification tests imposed under the Internal Revenue Code of 1986, as amended (the Code), including tests related to annual operating results, asset composition, distribution levels and diversity of stock ownership. Accordingly, no assurance can be given that the Parent Company has been organized or has operated or will continue to operate in a manner so as to qualify or remain qualified as a REIT. If the Parent Company fails to qualify as a REIT in any taxable year, it will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates.

The Operating Partnership is a partnership and is not required to pay federal income tax. Instead, taxable income is allocated to its partners, who include such amounts on their federal income tax returns. As such, no provision for federal income taxes has been included in the Operating Partnership’s accompanying condensed consolidated financial statements.

Even if the Parent Company and the Operating Partnership are not subject to federal income taxes, they are taxed in certain states in which they operate. The Company is also taxed in non-U.S. countries where it operates that do not recognize U.S. REITs under their respective tax laws. The Company’s consolidated taxable REIT subsidiary is subject to both federal and state income taxes to the extent there is taxable income. Accordingly, the Company recognizes and accrues income taxes for its taxable REIT subsidiary, certain states and non-U.S. jurisdictions, as appropriate.

We assess our significant tax positions in accordance with U.S. GAAP for all open tax years and determine whether we have any material unrecognized liabilities from uncertain tax benefits. If a tax position is not considered “more-likely-than-not” to be sustained solely on its technical merits, no benefits of the tax position are to be recognized (for financial statement purposes). As of September 30, 2012 and December 31, 2011, we have no assets or liabilities for uncertain tax positions. We classify interest and penalties from significant uncertain tax positions as interest expense and operating expense, respectively, in our condensed consolidated statements of operations. For the three and nine months ended September 30, 2012 and 2011, we had no such interest or penalties. The tax years 2009 through 2011 remain open to examination by the major taxing jurisdictions with which the Parent Company and its subsidiaries file tax returns.

See Note 9 for further discussion on income taxes.

(e) Presentation of Transactional-based Taxes

We account for transactional-based taxes, such as value added tax, or VAT, for our international properties on a net basis.

(f) Asset Retirement Obligations

We record accruals for estimated retirement obligations as required by current accounting guidance. The amount of asset retirement obligations relates primarily to estimated asbestos removal costs at the end of the economic life of properties that were built before 1984. As of September 30, 2012 and December 31, 2011, the amount included in accounts payable and other accrued liabilities on our condensed consolidated balance sheets was approximately $1.7 million and $1.2 million, respectively.

(g) Construction Management Revenue

Construction management revenue for long-term contracts are recognized under the percentage-of-completion method of accounting. Revenues are determined by measuring the percentage of total costs incurred to date to estimated total costs for each construction management contract based on current estimates of costs to complete. Contract costs include all labor and benefits, materials, subcontracts, and an allocation of indirect costs related to contract performance. Indirect costs are allocated to projects based upon labor hours charged. Third party costs are included in construction management expense and their reimbursements are included in construction management revenue to the extent that the Company is the primary obligor for the third party costs. Otherwise, construction management revenue and expense is reflected net of third party costs. As long-term design-build projects extend over one or more years, revisions in cost and estimated earnings during the course of the work are reflected in the accounting period in which the facts which require the revision become known. At the time a loss on a design-build project becomes known, the entire amount of the estimated loss is recognized in the condensed consolidated financial statements. Change orders are recognized when they are approved by the client.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

Costs and estimated earnings in excess of billings on uncompleted construction management projects are included in other assets in the condensed consolidated balance sheets. Billings in excess of costs and estimated earnings on uncompleted construction management projects are included in accounts payable and other accrued liabilities in the condensed consolidated balance sheets. Customers are billed on a monthly basis at the end of each month, which can be in advance of work performed.

(h) Assets and Liabilities Measured at Fair Value

Fair value under U.S. GAAP is a market-based measurement, not an entity-specific measurement. Therefore, our fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair-value measurements, we use a fair-value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair-value measurement is based on inputs from different levels of the fair-value hierarchy, the level in the fair-value hierarchy within which the entire fair-value measurement falls is based on the lowest level input that is significant to the fair-value measurement in its entirety. Our assessment of the significance of a particular input to the fair-value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.

(i) Transactions Expense

Transactions expense includes acquisition-related expenses and other business development expenses, which are expensed as incurred. Acquisition-related expenses include closing costs, broker commissions and other professional fees, including legal and accounting fees related to acquisitions and potential acquisitions.

(j) Capitalization of Costs

Direct and indirect project costs that are clearly associated with the development and redevelopment of properties are capitalized as incurred. Project costs include all costs directly associated with the development or redevelopment of a property, including construction costs, interest, property taxes, insurance, legal fees and costs of personnel working on the project. Indirect costs that do not clearly relate to the projects under development/redevelopment are not capitalized and are charged to expense as incurred.

Capitalization of costs begins when the activities necessary to get the development/redevelopment project ready for its intended use begins, which include costs incurred before the beginning of construction. Capitalization of costs ceases when the development/redevelopment project is substantially complete and ready for its intended use. Determining when a development/redevelopment project commences, and when it is substantially complete and ready for its intended use involves a degree of judgment. We generally consider a development/redevelopment project to be substantially complete and ready for its intended use upon commissioning, which is when the redeveloped/developed project has been tested at full load, or receipt of a certificate of occupancy. We cease cost capitalization if activities necessary for the development/redevelopment of the property have been suspended. Capitalized costs are allocated to the specific components of a project that are benefited.

During the three months ended September 30, 2012 and 2011, we capitalized interest of approximately $4.5 million and $4.8 million, respectively, and $13.6 million and $13.6 million during the nine months ended September 30, 2012 and 2011, respectively. During the three months ended September 30, 2012 and 2011, we capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $8.0 million and $6.5 million, respectively, and $23.3 million and $18.8 million during the nine months ended September 30, 2012 and 2011, respectively. Cash flows from capitalized leasing costs of $26.5 million and $19.1 million are included in improvements to and advances for investments in real estate in cash flows from investing activities in the condensed consolidated statements of cash flows for the nine months ended September 30, 2012 and 2011, respectively.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

(k) Management’s Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates made. On an on-going basis, we evaluate our estimates, including those related to the valuation of our real estate properties, accounts receivable and deferred rent receivable, performance-based equity compensation plans, the completeness of accrued liabilities and Digital Realty Trust, Inc.’s qualification as a REIT. We base our estimates on historical experience, current market conditions, and various other assumptions that are believed to be reasonable under the circumstances. Actual results may vary from those estimates and those estimates could vary under different assumptions or conditions.

(l) Segment Information

All of our properties generate similar revenues and expenses related to tenant rent and reimbursements and operating expenses. The delivery of our products is consistent across all properties and although services are provided to a wide range of customers, the types of services provided to them are limited to a few core principles. As such, the properties in our portfolio have similar economic characteristics and the nature of the products and services provided to our customers and the method to distribute such services are consistent throughout the portfolio. Consequently, our properties qualify for aggregation into one reporting segment.

(m) Recent Accounting Pronouncements

In May 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2011-04, Fair Value Measurement (Topic 820). This ASU is intended to create consistency between U.S. GAAP and International Financial Reporting Standards on the definition of fair value and on the guidance on how to measure fair value and on what to disclose about fair value measurements. We adopted this accounting guidance for financial statements issued for fiscal periods beginning after December 15, 2011. This update did not have a material effect on our financial statements.

In June 2011, the FASB issued ASU No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income (“ASU 2011-05”). This update amends Accounting Standards Codification (“ASC”) Topic 220, Comprehensive Income, to provide that total comprehensive income will be reported in one continuous statement or two separate but consecutive statements of financial performance. Presentation of total comprehensive income in the statement of stockholders’ equity (or statement of capital) or the footnotes will no longer be allowed. The calculation of net income and basic and diluted net income per share (or per unit) was not affected. ASU 2011-05 is effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2011. This update did not have a material effect on our financial statements.

3. Investments in Real Estate

We acquired the following real estate properties during the nine months ended September 30, 2012:

Location	Metropolitan Area	Date Acquired	Amount (in millions)
Convergence Business Park (1)	Dallas, Texas	February 22, 2012	$	123.0
9333, 9355, 9377 Grand Avenue (2)	Chicago, Illinois	May 10, 2012		22.3
8025 North Interstate 35 (3)	Austin, Texas	May 18, 2012		12.5
400 S. Akard Street	Dallas, Texas	June 13, 2012		75.0
Sentrum Portfolio (4)	London, England	July 11, 2012		1,138.6
11900 East Cornell Avenue	Denver, Colorado	September 14, 2012		90.8
			$	1,462.2

(1) Convergence Business Park is comprised of nine buildings along with undeveloped land. It is considered one property for our property count.

(2) 9333, 9355, 9377 Grand Avenue is comprised of three buildings. It is considered one property for our property count.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

(3) In connection with the acquisition, we assumed a $6.7 million secured mortgage loan.

(4) On July 11, 2012, we completed the acquisition of a three-property data center portfolio, totaling approximately 733,000 square feet, located in the greater London area, referred to as the Sentrum Portfolio. The purchase price was £734.6 million (equivalent to approximately $1.1 billion based on the July 11, 2012 exchange rate of £1.00 to $1.55), which includes an £18.7 million (equivalent to approximately $29.0 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) adjustment in the purchase price to reflect amounts associated with the early repayment of property debt. In addition, non-cash consideration of £56.5 million (or $87.6 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) was recorded as the expected fair value of contingent consideration as required by prevailing accounting guidance. There was also a non-cash purchase adjustment related to deferred taxes, which amounted to £68.6 million (or $106.3 million based on the July 11, 2012 exchange rate of £1.00 to $1.55). The purchase price was paid in cash funded with proceeds from our common stock offering in July 2012 along with borrowings under our global revolving credit facility.

The Sentrum Portfolio’s aggregate acquisition consideration was allocated as follows, subject to adjustment: $18.1 million to land, $7.0 million to acquired ground lease, $1.2 billion to buildings and improvements, $11.6 million to tenant improvements, $151.6 million to identified intangible assets ($107.2 million associated with in place leases and $44.4 million associated with above market leases) and $38.2 million to identified intangible liabilities associated with below market leases.

Operating revenues of $28.4 million and operating income of $6.8 million from the Sentrum Portfolio are included in the condensed consolidated income statement for the three and nine months ended September 30, 2012.

The following summarizes the expected weighted average remaining lives of acquired intangible assets and liabilities for the Sentrum Portfolio as of September 30, 2012:

	Sentrum Portfolio
Acquired in place lease value		11.5 years
Acquired above market leases		7.3 years
Acquired below market leases		11.0 years

The pro forma operating revenues and operating income of the Company, including the Sentrum Portfolio had the acquisition taken place on January 1, 2011 for the following periods are as follows:

	Three months ended				Nine months ended
	Operating Revenues		Operating Income		Operating Revenues		Operating Income
	(in millions)				(in millions)
Supplemental pro forma for the periods ended September 30, 2012 (1)	$	345.9	$	98.4	$	995.9	$	297.8
Supplemental pro forma for the periods ended September 30, 2011 (1)		305.4		84.1		887.1		260.5

(1) These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisition occurred on January 1, 2011, and may not be indicative of future operating results. The pro forma results exclude transaction expenses.

In March 2012, we entered into a joint venture with Savvis, Inc., a CenturyLink company. On June 26, 2012, this unconsolidated joint venture acquired a 164,000 square foot property in Hong Kong. The property is located at Tseung Kwan O Industrial Estate in New Territories, approximately 12 miles from downtown Hong Kong. As of September 30, 2012, we have contributed approximately $20.6 million to the joint venture.

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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

4. Acquired Intangible Assets and Liabilities

The following summarizes our acquired intangible assets (acquired in place lease value and acquired above-market lease value) and intangible liabilities (acquired below-market lease value) as of September 30, 2012 and December 31, 2011.

	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)
Net	$	357,372		$	232,910
Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)
Net	$	68,269		$	29,701
Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)
Net	$	152,876		$	85,819

Amortization of acquired below-market lease value, net of acquired above-market lease value, resulted in an increase to rental revenues of $2.3 million and $2.0 million for the three months ended September 30, 2012 and 2011, respectively, and $7.4 million and $5.7 million for the nine months ended September 30, 2012 and 2011, respectively. The expected average remaining lives for acquired below market leases and acquired above market leases is 7.5 years and 5.8 years, respectively, as of September 30, 2012. Estimated annual amortization of acquired below-market lease value, net of acquired above-market lease value, for each of the five succeeding years, commencing January 1, 2013 is as follows:

(Amounts in thousands)
2013	$	11,091
2014		9,161
2015		8,044
2016		7,137
2017		5,613

Costs associated with extending or renewing acquired leases are capitalized and classified as deferred leasing costs. Amortization of acquired in place lease value (a component of depreciation and amortization expense) was $14.5 million and $13.5 million for the three months ended September 30, 2012 and 2011, respectively, and $38.9 million and $41.3 million for the nine months ended September 30, 2012 and 2011, respectively. The expected average amortization period for acquired in place lease value is 7.4 years as of September 30, 2012. The weighted average remaining contractual life for acquired leases excluding renewals or extensions is 5.9 years as of September 30, 2012. Estimated annual amortization of acquired in place lease value for each of the five succeeding years, commencing January 1, 2013 is as follows:

(Amounts in thousands)
2013	$	57,995
2014		52,791
2015		44,109
2016		41,653
2017		26,947

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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

5. Debt of the Company

In this Note 5, the “Company” refers only to Digital Realty Trust, Inc. and not to any of its subsidiaries.

The Company itself does not have any indebtedness. All debt is held directly or indirectly by the Operating Partnership.

Guarantee of Debt

The Company guarantees the Operating Partnership’s obligations with respect to its 5.50% exchangeable senior debentures due 2029 (2029 Debentures), 4.50% notes due 2015 (2015 Notes), 5.875% notes due 2020 (2020 Notes), 5.25% notes due 2021 (2021 Notes), 3.625% notes due 2022 (2022 Notes) and its unsecured senior notes sold to Prudential Investment Management, Inc. and certain of its affiliates pursuant to the Amended and Restated Note Purchase and Private Shelf Agreement, which we refer to as the Prudential shelf facility. The Company is also the guarantor of the Operating Partnership’s and its subsidiary borrowers’ obligations under its global revolving credit facility and unsecured term loan.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

6. Debt of the Operating Partnership

A summary of outstanding indebtedness of the Operating Partnership as of September 30, 2012 and December 31, 2011 is as follows (in thousands):

Indebtedness	Interest Rate at September 30,  2012	Maturity Date	Principal  Outstanding September 30, 2012			Principal Outstanding December  31, 2011
Global revolving credit facility	Various (1)	Nov. 3, 2015	$	526,372	(2)	$	275,106	(2)
Unsecured term loan	Various (3)(9)	Apr. 16, 2017	$	754,935	(4)	$	—
Unsecured senior notes:
Prudential Shelf Facility:
Series B	9.320%	Nov. 5, 2013		33,000			33,000
Series C	9.680%	Jan. 6, 2016		25,000			25,000
Series D	4.570%	Jan. 20, 2015		50,000			50,000
Series E	5.730%	Jan. 20, 2017		50,000			50,000
Series F	4.500%	Feb. 3, 2015		17,000			17,000
Total Prudential Shelf Facility				175,000			175,000
Senior Notes:
4.50% notes due 2015	4.500%	Jul. 15, 2015		375,000			375,000
5.875% notes due 2020	5.875%	Feb. 1, 2020		500,000			500,000
5.25% notes due 2021	5.250%	Mar. 15, 2021		400,000			400,000
3.625% notes due 2022	3.625%	Oct. 1, 2022		300,000			—
Unamortized discounts				(12,119	)		(8,928	)
Total senior notes, net of discount				1,562,881			1,266,072
Total unsecured senior notes, net of discount				1,737,881			1,441,072
5.50% exchangeable senior debentures due 2029	5.50%	Apr. 15, 2029 (5)		266,400			266,400
Total exchangeable senior debentures				266,400			266,400

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

Indebtedness	Interest Rate at September 30,  2012	Maturity Date	Principal  Outstanding September 30, 2012			Principal Outstanding December  31, 2011
Mortgage loans:
Secured Term Debt (6)(7)	5.65%	Nov. 11, 2014		136,726			138,828
200 Paul Avenue 1-4 (7)	5.74%	Oct. 8, 2015		73,114			74,458
Mundells Roundabout	3-month GBP LIBOR + 1.20% (9)	Nov. 30, 2013		69,235	(10)		66,563	(10)
2045 & 2055 LaFayette Street (7)	5.93%	Feb. 6, 2017		64,864			65,551
34551 Ardenwood Boulevard 1-4 (7)	5.95%	Nov. 11, 2016		53,102			53,627
1100 Space Park Drive (7)	5.89%	Dec. 11, 2016		53,078			53,609
1350 Duane Avenue/3080 Raymond Street (7)	5.42%	Oct. 1, 2012 (13)		—			52,800
600 West Seventh Street	5.80%	Mar. 15, 2016		51,566			52,709
150 South First Street (7)	6.30%	Feb. 6, 2017		51,008			51,508
360 Spear Street (7)	6.32%	Nov. 8, 2013		46,862			47,569
114 Rue Ambroise Croizat	3-month EURIBOR + 1.35%	Jan. 18, 2012 (13)		—			39,483	(11)
2334 Lundy Place (7)	5.96%	Nov. 11, 2016		38,621			39,003
Clonshaugh Industrial Estate II (8)	3-month EURIBOR + 4.50% (9)	Sep. 4, 2014		38,580	(11)		38,883	(11)
1500 Space Park Drive (7)	6.15%	Oct. 5, 2013		36,247			37,875
Unit 9, Blanchardstown Corporate Park	3-month EURIBOR + 1.35%	Jan. 18, 2012 (13)		—			33,946	(11)
Cressex 1 (12)	5.68%	Oct. 16, 2014		28,529	(10)		27,786	(10)
1201 Comstock Street (7)	1-month LIBOR + 3.50%	Jun. 24, 2012 (13)		—			16,163
Paul van Vlissingenstraat 16	3-month EURIBOR + 1.60% (9)	Jul. 18, 2013		13,053	(11)		13,319	(11)
2805 Lafayette Street (7)(14)	1-month LIBOR + 4.75%	Jun. 9, 2013 (13)		—			10,000
Chemin de l’Epinglier 2	3-month EURIBOR + 1.50% (9)	Jul. 18, 2013		9,444	(11)		9,636	(11)
Gyroscoopweg 2E-2F	3-month EURIBOR + 1.50% (9)	Oct. 18, 2013		8,312	(11)		8,480	(11)
Manchester Technopark (12)	5.68%	Oct. 16, 2014		8,679	(10)		8,453	(10)
8025 North Interstate 35	4.09%	Mar. 6, 2017		6,621			—
731 East Trade Street	8.22%	Jul. 1, 2020		4,586			4,806
Unamortized net premiums				2,258			2,077
Total mortgage loans, net of premiums				794,485			947,132
Other secured loan:
2805 Lafayette Street Mezzanine (7)(14)	1-month LIBOR + 8.50%	Jun. 9, 2013 (13)		—			10,500
Total other secured loan				—			10,500
Total indebtedness			$	4,080,073		$	2,940,210

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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

(1) The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 125 basis points which is based on the credit rating of our long-term debt. An annual facility fee of 25 basis points, which is based on the credit rating of our long-term debt, is due and payable quarterly on the unused portion of the facility.

(2) Balances as of September 30, 2012 and December 31, 2011 are as follows (balances, in thousands):

Denomination of Draw	Balance as of September 30, 2012			Weighted-average interest rate			Balance as of December 31, 2011			Weighted-average interest rate
US ($)	$	—			0.00	%	$	194,000			1.54	%
British Sterling (£)		447,018	(a)		1.79	%		49,892	(b)		1.99	%
Singapore Dollar (SGD)		21,183	(a)		1.56	%		28,151	(b)		1.56	%
Australian Dollar (AUD)		39,021	(a)		4.83	%		3,063	(b)		5.89	%
Hong Kong Dollar (HKD)		19,150	(a)		1.55	%		—			—
Total	$	526,372			1.99	%	$	275,106			1.67	%

(a) Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.

(b) Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

(3) Interest rates are based on our senior unsecured debt ratings and are currently 145 basis points over the applicable index for floating rate advances.

(4) Balances as of September 30, 2012 are as follows (balances, in thousands):

Denomination of Draw	Balance as of September 30, 2012			Weighted-average interest rate
U.S. Dollar ($)	$	410,905			1.67	%
Singapore Dollar (SGD)		154,391	(a)		1.81	%
British Pound Sterling (£)		90,697	(a)		1.97	%
Euro (€)		63,657	(a)		1.57	%
Australian Dollar (AUD)		35,285	(a)		5.03	%
	$	754,935			1.89	%

(a) Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

(5) The holders of the debentures have the right to require the Operating Partnership to repurchase the debentures in cash in whole or in part for a price of 100% of the principal amount plus accrued and unpaid interest on each of April 15, 2014, April 15, 2019 and April 15, 2024. We have the right to redeem the debentures in cash for a price of 100% of the principal amount plus accrued and unpaid interest commencing on April 18, 2014.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

(6) This amount represents six mortgage loans secured by our interests in 36 NE 2nd Street, 3300 East Birch Street, 100 & 200 Quannapowitt Parkway, 300 Boulevard East, 4849 Alpha Road, and 11830 Webb Chapel Road. Each of these loans is cross-collateralized by the six properties.

(7) The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.

(8) The Operating Partnership or its subsidiary provides a limited recourse guarantee with respect to this loan.

(9) We have entered into interest rate swap agreements as a cash flow hedge for interest generated by these US LIBOR, EURIBOR and GBP LIBOR based loans as well as the U.S. Dollar and Singapore Dollar tranches of the unsecured term loan. See note 13 for further information.

(10) Based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.

(11) Based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.

(12) These loans are also secured by a £7.8 million letter of credit. These loans are cross-collateralized by the two properties.

(13) These loans were repaid in full: 114 Rue Ambroise Croizat (January 2012), Unit 9, Blanchardstown Corporate Park (January 2012), 1201 Comstock Street (April 2012), 2805 Lafayette Street (May 2012), 2805 Lafayette Street Mezzanine (May 2012) and 1350 Duane Avenue/3080 Raymond Street (September 2012). Net loss from early extinguishment of debt related to write-off of unamortized deferred loan costs on 1201 Comstock Street, 2805 Lafayette Street and 2805 Lafayette Street Mezzanine amounted to $0.3 million for both the three and nine months ended September 30, 2012.

(14) Property formerly referred to as 800 Central Expressway.

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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

Global Revolving Credit Facility

On November 3, 2011, the Operating Partnership replaced its corporate and Asia Pacific revolving credit facilities with an expanded revolving credit facility, which we refer to as the global revolving credit facility, increasing its total capacity to $1.5 billion from $850 million. The global revolving credit facility has an accordion feature that would enable us to increase the borrowing capacity of the credit facility to $2.25 billion, subject to the receipt of lender commitments. On August 10, 2012, we increased the aggregate commitments under our global revolving credit facility from $1.5 billion to $1.8 billion, pursuant to the partial exercise of the accordion feature. The renewed facility matures in November 2015, with a one-year extension option. The interest rate for borrowings under the expanded facility equals the applicable index plus a margin which is based on the credit rating of our long-term debt and is currently 125 basis points. An annual facility fee on the unused portion of the facility, based on the credit rating of our long-term debt and currently 25 basis points, is payable quarterly. Funds may be drawn in U.S., Canadian, Singapore, Australian and Hong Kong dollars, as well as Euro, Pound Sterling, Swiss Franc and Japanese yen denominations. As of September 30, 2012, borrowings under the global revolving credit facility bore interest at a blended rate of 1.79% (GBP), 1.56% (Singapore Dollars), 4.83% (Australian Dollars) and 1.55% (Hong Kong Dollars), which are based on 1-month GBP LIBOR, 1-month SIBOR, 1-month BBR and 1-month HIBOR, respectively, plus a margin of 1.25%. We have used and intend to use available borrowings under the global revolving credit facility to acquire additional properties, fund development and redevelopment opportunities and to provide for working capital and other corporate purposes, including potentially for the repurchase, redemption or retirement of outstanding debt or preferred equity securities. We capitalized approximately $11.2 million of financing costs related to the global revolving credit facility. As of September 30, 2012, approximately $526.4 million was drawn under this facility and $22.4 million of letters of credit were issued.

The global revolving credit facility contains various restrictive covenants, including limitations on our ability to incur additional indebtedness, make certain investments or merge with another company, and requirements to maintain financial coverage ratios, including with respect to unencumbered assets. In addition, the global revolving credit facility restricts Digital Realty Trust, Inc. from making distributions to its stockholders, or redeeming or otherwise repurchasing shares of its capital stock, after the occurrence and during the continuance of an event of default, except in limited circumstances including as necessary to enable Digital Realty Trust, Inc. to maintain its qualification as a REIT and to minimize the payment of income or excise tax. As of September 30, 2012, we were in compliance with all of such covenants.

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NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

Unsecured Term Loan

On April 17, 2012, we closed a new $750.0 million senior unsecured multi-currency term loan facility. The new facility matures on April 16, 2017. Interest rates are based on our senior unsecured debt ratings and are currently 145 basis points over the applicable index for floating rate advances. Funds may be drawn in U.S, Singapore and Australian dollars, as well as Euro and Pound Sterling denominations with the option to add Hong Kong dollars and Yen upon an accordion exercise, subject to the receipt of lender commitments. We had the ability to delay draw up to $250.0 million for up to 90 days from the date of closing. As of June 30, 2012, we had drawn approximately $525 million of the available facility based on exchange rates in effect at the time of each draw. An additional $225 million was drawn against the facility during July 2012 based on exchange rates in effect at the time of the draws. Based on exchange rates in effect at September 30, 2012, the balance outstanding is approximately $754.9 million. We have used borrowings under the term loan for acquisitions, repayment of indebtedness, development and redevelopment, working capital and general corporate purposes. The covenants under this loan are consistent with our global revolving credit facility. We capitalized approximately $5.3 million of financing costs related to the unsecured term loan.

3.625% Notes due 2022

On September 24, 2012, the Operating Partnership issued $300.0 million in aggregate principal amount of notes, maturing on October 1, 2022 with an interest rate of 3.625% per annum (the 2022 Notes). The purchase price paid by the initial purchasers was 98.684% of the principal amount. The 2022 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Digital Realty Trust, Inc. Interest on the 2022 Notes is payable on April 1 and October 1 of each year, beginning on April 1, 2013. The net proceeds from the offering after deducting the original issue discount of approximately $3.9 million and underwriting commissions and expenses of approximately $3.0 million was approximately $293.1 million. We used the net proceeds from this offering to temporarily repay borrowings under our global revolving credit facility. The 2022 Notes have been reflected net of discount in the condensed consolidated balance sheet. The indenture governing the 2022 Notes contains certain covenants, including (1) a leverage ratio not to exceed 60%, (2) a secured debt leverage ratio not to exceed 40% and (3) an interest coverage ratio of greater than 1.50, and also requires us to maintain total unencumbered assets of not less than 150% of the aggregate principal amount of unsecured debt. At September 30, 2012, we were in compliance with each of these financial covenants.

The table below summarizes our debt maturities and principal payments as of September 30, 2012 (in thousands):

	Global Revolving Credit Facility (1)		Unsecured Term Loan		Unsecured Senior Notes		Senior Notes			Exchangeable Senior Debentures (3)		Mortgage Loans (2)		Total Debt
Remainder of 2012	$	—	$	—	$	—	$	—		$	—	$	3,765	$	3,765
2013		—		—		33,000		—			—		193,837		226,837
2014		—		—		—		—			266,400		216,388		482,788
2015		526,372		—		67,000		375,000			—		75,493		1,043,865
2016		—		—		25,000		—			—		191,979		216,979
Thereafter		—		754,935		50,000		1,200,000			—		110,765		2,115,700
Subtotal	$	526,372	$	754,935	$	175,000	$	1,575,000		$	266,400	$	792,227	$	4,089,934
Unamortized discount		—		—		—		(12,119	)		—		—		(12,119	)
Unamortized premium		—		—		—		—			—		2,258		2,258
Total	$	526,372	$	754,935	$	175,000	$	1,562,881		$	266,400	$	794,485	$	4,080,073

(1) Subject to a one-year extension option exercisable by us. The bank group is obligated to grant the extension option provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility.

(2) Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of September 30, 2012, we provided limited recourse guarantees with respect to approximately $38.6 million of the outstanding mortgage indebtedness, and partial letter of credit support with respect to approximately an additional $37.2 million of the outstanding mortgage indebtedness (based on exchange rates as of September 30, 2012).

(3) Assumes maturity of the 2029 Debentures at their first redemption date in April 2014.

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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

7. Income per Share

The following is a summary of basic and diluted income per share (in thousands, except share and per share amounts):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Net income available to common stockholders	$	45,615	$	31,908	$	126,847	$	94,878
Weighted average shares outstanding—basic		122,026,421		100,588,235		112,995,512		96,137,611
Potentially dilutive common shares:
Stock options		76,774		197,632		74,462		192,885
Class C Units (2007 Grant)		—		49,163		—		38,654
Unvested incentive units		250,316		162,832		205,247		145,032
Series E preferred stock		—		914,480		—		308,176
Excess exchange value of the 2026 Debentures		—		—		—		494,292
Weighted average shares outstanding—diluted		122,353,511		101,912,342		113,275,221		97,316,650
Income per share:
Basic	$	0.37	$	0.32	$	1.12	$	0.99
Diluted	$	0.37	$	0.31	$	1.12	$	0.97

During the year ended December 31, 2011, the Operating Partnership’s remaining 4.125% exchangeable senior debentures due August 15, 2026 (2026 Debentures) were redeemed and exchanged. On or after July 15, 2026, the 2026 Debentures would have been exchangeable at the then-applicable exchange rate for cash (up to the principal amount of the 2026 Debentures) and, with respect to any excess exchange value, into cash, shares of Digital Realty Trust, Inc. common stock or a combination of cash and shares of Digital Realty Trust, Inc. common stock. The 2026 Debentures also would have been exchangeable prior to July 15, 2026, but only upon the occurrence of certain specified events, including if the weighted average common stock price exceeded a specified strike price as of the end of a fiscal quarter. Using the treasury stock method, 494,292 shares of common stock contingently issuable upon settlement of the excess exchange value were included as potentially dilutive common shares in determining diluted earnings per share for the nine months ended September 30, 2011.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc.		4,345,574		4,481,045		4,346,586		4,708,129
Potentially dilutive 2029 Debentures		6,514,812		6,368,292		6,471,282		6,309,599
Potentially dilutive Series C Cumulative Convertible Preferred Stock		—		2,783,811		1,087,398		3,097,084
Potentially dilutive Series D Cumulative Convertible Preferred Stock		4,219,384		5,603,998		4,309,978		6,775,337
Potentially dilutive Series E Cumulative Redeemable Preferred Stock		4,151,146		—		4,045,501		—
Potentially dilutive Series F Cumulative Redeemable Preferred Stock		2,632,647		—		1,243,998		—
		21,863,563		19,237,146		21,504,743		20,890,149

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

8. Income per Unit

The following is a summary of basic and diluted income per unit (in thousands, except unit and per unit amounts):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
Net income available to common unitholders	$	47,189	$	33,329	$	131,668	$	99,533
Weighted average units outstanding—basic		126,242,751		105,069,280		117,291,480		100,845,740
Potentially dilutive common units:
Stock options		76,774		197,632		74,462		192,885
Class C Units (2007 Grant)		—		49,163		—		38,654
Unvested incentive units		250,316		162,832		205,247		145,032
Series E preferred units		—		914,480		—		308,176
Excess exchange value of the 2026 Debentures		—		—		—		494,292
Weighted average units outstanding—diluted		126,569,841		106,393,387		117,571,189		102,024,779
Income per unit:
Basic	$	0.37	$	0.32	$	1.12	$	0.99
Diluted	$	0.37	$	0.31	$	1.12	$	0.97

During the year ended December 31, 2011, the remaining 2026 Debentures were redeemed and exchanged. On or after July 15, 2026, the 2026 Debentures would have been exchangeable at the then-applicable exchange rate for cash (up to the principal amount of the 2026 Debentures) and, with respect to any excess exchange value, into cash, shares of Digital Realty Trust, Inc. common stock or a combination of cash and shares of Digital Realty Trust, Inc. common stock. Pursuant to the terms of the Operating Partnership’s agreement of limited partnership, the Operating Partnership would have delivered to Digital Realty Trust, Inc. one common unit for each share of common stock issued upon exchange of the 2026 Debentures. The 2026 Debentures also would have been exchangeable prior to July 15, 2026, but only upon the occurrence of certain specified events, including if the weighted average common stock price exceeded a specified strike price as of the end of a fiscal quarter. Using the treasury method, 494,292 common units contingently issuable upon settlement of the excess exchange value were included as potentially dilutive common units in determining diluted earnings per unit for the nine months ended September 30, 2011.

We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2011		2010
Potentially dilutive 2029 Debentures		6,514,812		6,368,292		6,471,282		6,309,599
Potentially dilutive Series C Cumulative Convertible Preferred Units		—		2,783,811		1,087,398		3,097,084
Potentially dilutive Series D Cumulative Convertible Preferred Units		4,219,384		5,603,998		4,309,978		6,775,337
Potentially dilutive Series E Cumulative Redeemable Preferred Units		4,151,146		—		4,045,501		—
Potentially dilutive Series F Cumulative Redeemable Preferred Units		2,632,647		—		1,243,998		—
		17,517,989		14,756,101		17,158,157		16,182,020

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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

9. Income Taxes

Digital Realty Trust, Inc. (the Parent Company) has elected to be taxed as a REIT and believes that it has complied with the REIT requirements of the Code. As a REIT, the Parent Company is generally not subject to corporate level federal income taxes on taxable income to the extent it is currently distributed to its stockholders. Since inception, the Parent Company has distributed 100% of its taxable income and intends to do so for the tax year ending December 31, 2012. As such, no provision for federal income taxes has been included in the accompanying condensed consolidated financial statements for the three and nine months ended September 30, 2012 and 2011.

We have elected taxable REIT subsidiary (TRS) status for some of our consolidated subsidiaries. In general, a TRS may provide services that would otherwise be considered impermissible for REITs and hold assets that REITs cannot hold directly. A TRS is subject to federal income tax as a regular C corporation. Income taxes for TRS entities were accrued, as necessary, for the three and nine months ended September 30, 2012 and 2011.

For our TRS entities and foreign subsidiaries that are subject to U.S. federal, state and foreign income taxes, deferred tax assets and liabilities are established for temporary differences between the financial reporting basis and the tax basis of assets and liabilities at the enacted tax rates expected to be in effect when the temporary differences reverse. A valuation allowance for deferred tax assets is provided if we believe it is more likely than not that the deferred tax asset may not be realized, based on available evidence at the time the determination is made. An increase or decrease in the valuation allowance that results from the change in circumstances that causes a change in our judgment about the realizability of the related deferred tax asset is included in income. Deferred tax assets (net of valuation allowance) and liabilities for our TRS entities and foreign subsidiaries were accrued, as necessary, for the three and nine months ended September 30, 2012 and 2011.

10. Equity and Accumulated Other Comprehensive Loss, Net

(a) Common Stock

On July 2, 2012, Digital Realty Trust, Inc. completed an offering of 11.5 million shares of its common stock for total net proceeds, after deducting underwriting discounts and commissions and estimated offering expenses, of approximately $797.2 million. Digital Realty Trust, Inc. contributed the net proceeds from this offering to the Operating Partnership in exchange for 11.5 million common units, as required by the Operating Partnership’s partnership agreement, and the Operating Partnership used the net proceeds to fund a portion of the purchase price for the acquisition of the Sentrum Portfolio and to temporarily repay borrowings under our global revolving credit facility.

(b) Equity Distribution Agreements

On December 31, 2009, Digital Realty Trust, Inc. entered into equity distribution agreements, as amended, which we refer to as the 2009 Equity Distribution Agreements under which it could issue and sell shares of its common stock having an aggregate offering price of up to $400.0 million. The sales of common stock made under the 2009 Equity Distribution Agreements were made in “at the market” offerings as defined in Rule 415 of the Securities Act. In June 2011, we completed this equity distribution program. For the nine months ended September 30, 2011, Digital Realty Trust, Inc. generated aggregate net proceeds of approximately $176.9 million from the issuance of approximately 3.0 million common shares under the 2009 Equity Distribution Agreements at an average price of $60.51 per share after payment of approximately $2.7 million of commissions to the sales agents and before offering expenses. Pursuant to the program, we sold 6.8 million shares of common stock for gross proceeds of $400.0 million, resulting in net proceeds of approximately $394.0 million after deducting commissions.

On June 29, 2011, Digital Realty Trust, Inc. entered into new equity distribution agreements, which we refer to as the 2011 Equity Distribution Agreements, with each of Merrill Lynch, Pierce, Fenner & Smith Incorporated, Citigroup Global Markets Inc., Credit Suisse Securities (USA) LLC, Deutsche Bank Securities Inc. and Morgan Stanley & Co. LLC, or the Agents, under which it could issue and sell shares of its common stock having an aggregate offering price of up to $400.0 million from time to time through, at its discretion, any of the Agents as its sales agents. The sales of common stock made under the 2011 Equity Distribution Agreements will be made in “at the market” offerings as defined in Rule 415 of the Securities Act. For the nine months ended September 30, 2012, Digital Realty Trust, Inc. generated net proceeds of approximately $62.7 million from the issuance of approximately 1.0 million common shares under the 2011 Equity Distribution Agreements at an average price of $66.19 per share after payment of approximately $0.6 million of commissions to the sales agents and before offering expenses. No sales were made under the 2011 Equity Distribution Agreements during the three months ended September 30, 2012.

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DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

(c) Redeemable Preferred Stock

On April 5, 2012 and April 18, 2012, Digital Realty Trust, Inc. issued an aggregate of 7,300,000 shares of its 6.625% series F cumulative redeemable preferred stock, or the series F preferred stock, for net proceeds of $176.2 million, after deducting underwriting discounts and commissions and offering expenses. Dividends are cumulative on the series F preferred stock from the date of original issuance in the amount of $1.65625 per share each year, which is equivalent to 6.625% of the $25.00 liquidation preference per share. Dividends on the series F preferred stock are payable quarterly in arrears. The first dividend paid on the series F preferred stock on June 29, 2012 was a pro rata dividend from and including the original issue date to and including June 30, 2012 in the amount of $0.395660 per share. The series F preferred stock does not have a stated maturity date and is not subject to any sinking fund or mandatory redemption provisions. Upon liquidation, dissolution or winding up, the series F preferred stock will rank senior to Digital Realty Trust, Inc. common stock with respect to the payment of distributions and other amounts and rank on parity with Digital Realty Trust, Inc.’s series D cumulative convertible preferred stock and series E cumulative redeemable preferred stock. Digital Realty Trust, Inc. is not allowed to redeem the series F preferred stock before April 5, 2017, except in limited circumstances to preserve its status as a REIT. On or after April 5, 2017, Digital Realty Trust, Inc. may, at its option, redeem the series F preferred stock, in whole or in part, at any time or from time to time, for cash at a redemption price of $25.00 per share, plus all accrued and unpaid dividends on such series F preferred stock up to but excluding the redemption date. Holders of the series F preferred stock generally have no voting rights except for limited voting rights if Digital Realty Trust, Inc. fails to pay dividends for six or more quarterly periods (whether or not consecutive) and in certain other circumstances. Upon the occurrence of specified changes of control, as a result of which neither Digital Realty Trust, Inc.’s common stock nor the common securities of the acquiring or surviving entity (or American Depositary Receipts representing such securities) is listed on the New York Stock Exchange, or NYSE, the NYSE Amex Equities or the NASDAQ Stock Market or listed or quoted on a successor exchange or quotation system, each holder of series F preferred stock will have the right (unless, prior to the change of control conversion date specified in the Articles Supplementary governing the series F preferred stock, Digital Realty Trust, Inc. has provided or provides notice of its election to redeem the series F preferred stock) to convert some or all of the series F preferred stock held by it into a number of shares of Digital Realty Trust, Inc.’s common stock per share of series F preferred stock to be converted equal to the lesser of:

• the quotient obtained by dividing (i) the sum of the $25.00 liquidation preference plus the amount of any accrued and unpaid dividends to, but not including, the change of control conversion date (unless the change of control conversion date is after a record date for a series F preferred stock dividend payment and prior to the corresponding series F preferred stock dividend payment date, in which case no additional amount for such accrued and unpaid dividend will be included in this sum) by (ii) the common stock price specified in the Articles Supplementary governing the series F preferred stock; and

• 0.6843, or the share cap, subject to certain adjustments;

subject, in each case, to provisions for the receipt of alternative consideration as described in the Articles Supplementary governing the series F preferred stock. Except in connection with specified change of control transactions, the series F preferred stock is not convertible into or exchangeable for any other property or securities of Digital Realty Trust, Inc.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

(d) Noncontrolling Interests in Operating Partnership

Noncontrolling interests in the Operating Partnership relate to the interests that are not owned by Digital Realty Trust, Inc. The following table shows the ownership interest in the Operating Partnership as of September 30, 2012 and December 31, 2011:

	September 30, 2012					December 31, 2011
	Number of units		Percentage of total			Number of units		Percentage of total
Digital Realty Trust, Inc.		123,261,390		96.4	%		106,039,279		95.6	%
Noncontrolling interests consist of:
Common units held by third parties		3,131,814		2.4			3,405,814		3.0
Incentive units held by employees and directors (see note 12)		1,494,254		1.2			1,530,316		1.4
		127,887,458		100.0	%		110,975,409		100.0	%

Limited partners have the right to require the Operating Partnership to redeem part or all of their common units for cash based on the fair market value of an equivalent number of shares of Digital Realty Trust, Inc. common stock at the time of redemption. Alternatively, Digital Realty Trust, Inc. may elect to acquire those common units in exchange for shares of Digital Realty Trust, Inc. common stock on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, issuance of stock rights, specified extraordinary distributions and similar events. Pursuant to authoritative accounting guidance, Digital Realty Trust, Inc. evaluated whether it controls the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the share settlement of the noncontrolling Operating Partnership common and incentive units. Based on the results of this analysis, we concluded that the common and incentive Operating Partnership units met the criteria to be classified within equity.

The redemption value of the noncontrolling Operating Partnership common units and the vested incentive units was approximately $290.1 million and $291.5 million based on the closing market price of Digital Realty Trust, Inc. common stock on September 30, 2012 and December 31, 2011, respectively.

The following table shows activity for the noncontrolling interests in the Operating Partnership for the nine months ended September 30, 2012:

	Common Units			Incentive Units			Total
As of December 31, 2011		3,405,814			1,530,316			4,936,130
Redemption of common units for shares of Digital Realty Trust, Inc. common stock (1)		(274,000	)		—			(274,000	)
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock (1)		—			(186,192	)		(186,192	)
Cancellation of incentive units held by employees and directors		—			(15,950	)		(15,950	)
Grant of incentive units to employees and directors		—			166,080			166,080
As of September 30, 2012		3,131,814			1,494,254			4,626,068

(1) This redemption was recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid in capital based on the book value per unit in the accompanying condensed consolidated balance sheet of Digital Realty Trust, Inc.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

Under the terms of certain third parties’ (the eXchange parties) contribution agreements signed in the third quarter of 2004, we have agreed to indemnify each eXchange party against adverse tax consequences in the event the Operating Partnership directly or indirectly sells, exchanges or otherwise disposes of (whether by way of merger, sale of assets or otherwise) in a taxable transaction any interest in 200 Paul Avenue 1-4 or 1100 Space Park Drive until the earlier of November 3, 2013 and the date on which these contributors or certain transferees hold less than 25% of the Operating Partnership common units issued to them in the formation transactions consummated concurrently with the IPO. Under the eXchange parties’ amended contribution agreement, the Operating Partnership has agreed to make approximately $17.8 million of indebtedness available for guaranty by the eXchange parties until the earlier of November 3, 2013 and the date on which these contributors or certain transferees hold less than 25% of the Operating Partnership common units issued to them in the formation transactions consummated concurrently with the IPO, and we have agreed to indemnify each eXchange party against adverse tax consequences if the Operating Partnership does not provide such indebtedness to guarantee.

(e) Dividends

We have declared and paid the following dividends on our common and preferred stock for the nine months ended September 30, 2012 (in thousands):

Date dividend declared	Dividend payable date	Series C Preferred Stock(1)(6)		Series D Preferred Stock(2)		Series E Preferred Stock(3)		Series F Preferred Stock(4)			Common Stock(5)
February 14, 2012	Mar. 30, 2012	$	1,402	$	2,398	$	5,031	$	—		$	78,335
April 23, 2012	June 29, 2012		—		2,394		5,031		2,888	(7)		80,478
July 19, 2012	Sept. 28, 2012		—		1,723		5,031		3,023			89,679
		$	1,402	$	6,515	$	15,093	$	5,911		$	248,492

(1) $1.094 annual rate of dividend per share.

(2) $1.375 annual rate of dividend per share.

(3) $1.750 annual rate of dividend per share.

(4) $1.656 annual rate of dividend per share.

(5) $2.920 annual rate of dividend per share.

(6) Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% series C cumulative convertible preferred stock, or the series C preferred stock, into shares of its of common stock in accordance with the terms of the series C preferred stock. Each share of series C preferred stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.

(7) Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

Distributions out of Digital Realty Trust, Inc.’s current or accumulated earnings and profits are generally classified as dividends whereas distributions in excess of its current and accumulated earnings and profits, to the extent of a stockholder’s U.S. federal income tax basis in Digital Realty Trust, Inc.’s stock, are generally classified as a return of capital. Distributions in excess of a stockholder’s U.S. federal income tax basis in Digital Realty Trust, Inc.’s stock are generally characterized as capital gain. Cash provided by operating activities has generally been sufficient to fund all distributions, however, we may also need to utilize borrowings under the global revolving credit facility to fund all distributions.

(f) Accumulated Other Comprehensive Loss, Net

The accumulated balances for each classification of other comprehensive loss, net as of September 30, 2012 are as follows (in thousands):

	Foreign  currency translation adjustments			Cash flow  hedge adjustments			Accumulated  other comprehensive loss, net
Balance as of December 31, 2011	$	(49,298	)	$	(6,582	)	$	(55,880	)
Net current period change		35,053			(6,553	)		28,500
Reclassification to interest expense from interest rate swaps		—			2,856			2,856
Balance as of September 30, 2012	$	(14,245	)	$	(10,279	)	$	(24,524	)

(g) Noncontrolling Interests in Consolidated Joint Ventures

On May 4, 2012, we acquired all of the noncontrolling ownership interest in the entity that owns 2805 Lafayette Street from our joint venture partner for approximately $12.4 million (subject to adjustment in limited circumstances). Concurrent with the acquisition, we repaid the secured debt on the property. The acquisition and debt repayment were financed with borrowings under our global revolving credit facility. The amount paid in excess of the carrying value of the noncontrolling ownership interest resulted in a decrease to additional paid-in capital, as presented in the accompanying condensed consolidated statement of equity.

11. Capital and Comprehensive Income

(a) Redeemable Preferred Units

On April 5, 2012 and April 18, 2012, the Operating Partnership issued a total of 7,300,000 units of its 6.625% series F cumulative redeemable preferred units, or series F preferred units, to Digital Realty Trust, Inc. (the General Partner) in conjunction with the General Partner’s issuance of an equivalent number of shares of its 6.625% series F cumulative redeemable preferred stock, or the series F preferred stock. Distributions are cumulative on the series F preferred units from the date of original issuance in the amount of $1.65625 per unit each year, which is equivalent to 6.625% of the $25.00 liquidation preference per unit. Distributions on the series F preferred units are payable quarterly in arrears. The first distribution paid on the series F preferred units on June 29, 2012 was a pro rata distribution from and including the original issue date to and including June 30, 2012 in the amount of $0.39566 per unit. The series F preferred units do not have a stated maturity date and are not subject to any sinking fund. The Operating Partnership is required to redeem the series F preferred units in the event that the General Partner redeems the series F preferred stock. The General Partner is not allowed to redeem the series F preferred stock prior to April 5, 2017 except in limited circumstances to preserve the General Partner’s status as a REIT. On or after April 5, 2017, the General Partner may, at its option, redeem the series F preferred stock, in whole or in part, at any time or from time to time, for cash at a redemption price of $25.00 per share, plus all accrued and unpaid dividends on such series F preferred stock up to but excluding the redemption date. Upon liquidation, dissolution or winding up, the series F preferred units will rank senior to the common units with respect to the payment of distributions and other amounts and rank on parity with the Operating Partnership’s series D cumulative convertible preferred units and series E cumulative redeemable preferred units. Except in connection with specified change of control transactions of the General Partner, the series F preferred units are not convertible into or exchangeable for any other property or securities of the Operating Partnership.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

(b) Allocations of Net Income and Net Losses to Partners

Except for special allocations to holders of profits interest units described below in note 12(a) under the heading “Incentive Plan-Long-Term Incentive Units,” the Operating Partnership’s net income will generally be allocated to the General Partner to the extent of the accrued preferred return on its preferred units, and then to the General Partner and the Operating Partnership’s limited partners in accordance with the respective percentage interests in the common units issued by the Operating Partnership. Net loss will generally be allocated to the General Partner and the Operating Partnership’s limited partners in accordance with the respective common percentage interests in the Operating Partnership until the limited partner’s capital is reduced to zero and any remaining net loss would be allocated to the General Partner. However, in some cases, losses may be disproportionately allocated to partners who have guaranteed our debt. The allocations described above are subject to special allocations relating to depreciation deductions and to compliance with the provisions of Sections 704(b) and 704(c) of the Code, and the associated Treasury Regulations.

(c) Partnership Units

Limited partners have the right to require the Operating Partnership to redeem part or all of their common units for cash based on the fair market value of an equivalent number of shares of the General Partner’s common stock at the time of redemption. Alternatively, the General Partner may elect to acquire those common units in exchange for shares of the General Partner’s common stock on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, issuance of stock rights, specified extraordinary distributions and similar events. Pursuant to authoritative accounting guidance, the Operating Partnership evaluated whether it controls the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the share settlement of the limited partners’ common units and the vested incentive units. Based on the results of this analysis, the Operating Partnership concluded that the common and vested incentive Operating Partnership units met the criteria to be classified within capital.

The redemption value of the limited partners’ common units and the vested incentive units was approximately $290.1 million and $291.5 million based on the closing market price of Digital Realty Trust, Inc.’s common stock on September 30, 2012 and December 31, 2011, respectively.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

(d) Distributions

All distributions on our units are at the discretion of Digital Realty Trust, Inc.’s board of directors. As of September 30, 2012, the Operating Partnership declared and paid the following distributions (in thousands):

Date distribution declared	Distribution payable date		Series C Preferred Units (1)(6)		Series D Preferred Units (2)		Series E Preferred Units (3)		Series F Preferred Units (4)			Common Units  (5)
February 14, 2012		Mar. 30, 2012	$	1,402	$	2,398	$	5,031	$	—		$	81,917
April 23, 2012		June 29, 2012		—		2,394		5,031		2,888	(7)		83,982
July 19, 2012		Sept. 28, 2012		—		1,723		5,031		3,023			93,076
			$	1,402	$	6,515	$	15,093	$	5,911		$	258,975

(1) $1.094 annual rate of distribution per unit.

(2) $1.375 annual rate of distribution per unit.

(3) $1.750 annual rate of distribution per unit.

(4) $1.656 annual rate of distribution per unit.

(5) $2.920 annual rate of distribution per unit.

(6) Effective April 17, 2012, in connection with the conversion of the series C preferred stock by Digital Realty Trust, Inc., all of the outstanding 4.375% series C cumulative convertible preferred units, or the series C preferred units, were converted into common units in accordance with the terms of the series C preferred units. Each series C preferred unit was converted into 0.5480 common unit of the Operating Partnership.

(7) Represents a pro rata distribution from and including the original issue date to and including June 30, 2012.

(e) Accumulated Other Comprehensive Loss

The accumulated balances for each classification of other comprehensive loss as of September 30, 2012 are as follows (in thousands):

	Foreign  currency translation adjustments			Cash flow  hedge adjustments			Accumulated  other comprehensive loss
Balance as of December 31, 2011	$	(52,704	)	$	(7,363	)	$	(60,067	)
Net current period change		36,286			(6,796	)		29,490
Reclassification to interest expense from interest rate swaps		—			2,964			2,964
Balance as of September 30, 2012	$	(16,418	)	$	(11,195	)	$	(27,613	)

(f) Noncontrolling Interests in Consolidated Joint Ventures

On May 4, 2012, we acquired all of the noncontrolling ownership interest in the entity that owns 2805 Lafayette Street from our joint venture partner for approximately $12.4 million (subject to adjustment in limited circumstances). Concurrent with the acquisition, we repaid the secured debt on the property. The acquisition and debt repayment were financed with borrowings under our global revolving credit facility. The amount paid in excess of the carrying value of the noncontrolling ownership interest resulted in a decrease to general partner common capital as presented in the accompanying condensed consolidated statement of capital.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

12. Incentive Plan

Our Amended and Restated 2004 Incentive Award Plan (as defined below) provides for the grant of incentive awards to employees, directors and consultants. Awards issuable under the Amended and Restated 2004 Incentive Award Plan include stock options, restricted stock, dividend equivalents, stock appreciation rights, long-term incentive units, cash performance bonuses and other incentive awards. Only employees are eligible to receive incentive stock options under the Amended and Restated 2004 Incentive Award Plan. Initially, we had reserved a total of 4,474,102 shares of common stock for issuance pursuant to the 2004 Incentive Award Plan, subject to certain adjustments set forth in the 2004 Incentive Award Plan. On May 2, 2007, Digital Realty Trust, Inc.’s stockholders approved the First Amended and Restated Digital Realty Trust, Inc., Digital Services, Inc. and Digital Realty Trust, L.P. 2004 Incentive Award Plan (as amended, the Amended and Restated 2004 Incentive Award Plan). The Amended and Restated 2004 Incentive Award Plan increases the aggregate number of shares of stock which may be issued or transferred under the plan by 5,000,000 shares to a total of 9,474,102 shares, and provides that the maximum number of shares of stock with respect to awards granted to any one participant during a calendar year will be 1,500,000 and the maximum amount that may be paid in cash during any calendar year with respect to any performance-based award not denominated in stock or otherwise for which the foregoing limitation would not be an effective limitation for purposes of Section 162(m) of the Code will be $10.0 million.

As of September 30, 2012, 3,495,677 shares of common stock or awards convertible into or exchangeable for common stock remained available for future issuance under the Amended and Restated 2004 Incentive Award Plan. Each long-term incentive unit and Class C Unit issued under the Amended and Restated 2004 Incentive Award Plan will count as one share of common stock for purposes of calculating the limit on shares that may be issued under the Amended and Restated 2004 Incentive Award Plan and the individual award limit discussed above.

(a) Long-Term Incentive Units

Long-term incentive units, which are also referred to as profits interest units, may be issued to eligible participants for the performance of services to or for the benefit of the Operating Partnership. Long-term incentive units, whether vested or not, will receive the same quarterly per unit distributions as Operating Partnership common units, which equal per share distributions on Digital Realty Trust, Inc. common stock. Initially, long-term incentive units do not have full parity with common units with respect to liquidating distributions. If such parity is reached, vested long-term incentive units may be converted into an equal number of common units of the Operating Partnership at any time, and thereafter enjoy all the rights of common units of the Operating Partnership, including redemption rights.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

In order to achieve full parity with common units, long-term incentive units must be fully vested and the holder’s capital account balance in respect of such long-term incentive units must be equal to the capital account balance of a holder of an equivalent number of common units. The capital account balance attributable to each common unit is generally expected to be the same, in part because of the amount credited to a partner’s capital account upon the partner’s contribution of property to the Operating Partnership, and in part because the partnership agreement provides, in most cases, that allocations of income, gain, loss and deduction (which will adjust the partner’s capital accounts) are to be made to the common units on a proportionate basis. As a result, with respect to a number of long-term incentive units, it is possible to determine the capital account balance of an equivalent number of common units by multiplying the number of long-term incentive units by the capital account balance with respect to a common unit.

A partner’s initial capital account balance is equal to the amount the partner paid (or contributed to the Operating Partnership) for the partner’s units and is subject to subsequent adjustments, including with respect to the partner’s share of income, gain or loss of the Operating Partnership. Because a holder of long-term incentive units generally will not pay for the long-term incentive units, the initial capital account balance attributable to such long-term incentive units will be zero. However, the Operating Partnership is required to allocate income, gain, loss and deduction to the partner’s capital accounts in accordance with the terms of the partnership agreement, subject to applicable Treasury Regulations. The partnership agreement provides that holders of long-term incentive units will receive special allocations of gain in the event of a sale or “hypothetical sale” of assets of the Operating Partnership prior to the allocation of gain to Digital Realty Trust, Inc. or other limited partners with respect to their common units. The amount of such allocation will, to the extent of any such gain, be equal to the difference between the capital account balance of a holder of long-term incentive units attributable to such units and the capital account balance attributable to an equivalent number of common units. If and when such gain allocation is fully made, a holder of long-term incentive units will have achieved full parity with holders of common units. To the extent that, upon an actual sale or a “hypothetical sale” of the Operating Partnership’s assets as described above, there is not sufficient gain to allocate to a holder’s capital account with respect to long-term incentive units, or if such sale or “hypothetical sale” does not occur, such units will not achieve parity with common units.

The term “hypothetical sale” refers to circumstances that are not actual sales of the Operating Partnership’s assets but that require certain adjustments to the value of the Operating Partnership’s assets and the partners’ capital account balances. Specifically, the partnership agreement provides that, from time to time, in accordance with applicable Treasury Regulations, the Operating Partnership will adjust the value of its assets to equal their respective fair market values, and adjust the partners’ capital accounts, in accordance with the terms of the partnership agreement, as if the Operating Partnership sold its assets for an amount equal to their value. Times for making such adjustments generally include the liquidation of the Operating Partnership, the acquisition of an additional interest in the Operating Partnership by a new or existing partner in exchange for more than a de minimis capital contribution, the distribution by the Operating Partnership to a partner of more than a de minimis amount of partnership property as consideration for an interest in the Operating Partnership, in connection with the grant of an interest in the Operating Partnership (other than a de minimis interest) as consideration for the performance of services to or for the benefit of the Operating Partnership (including the grant of a long-term incentive unit), and at such other times as may be desirable or required to comply with the Treasury Regulations.

During the nine months ended September 30, 2012 and 2011, certain employees were granted an aggregate of 79,237 and 85,910 long-term incentive units, respectively. During the nine months ended September 30, 2012 and 2011, certain employees were also granted an aggregate of 86,843 and 98,632 long-term incentive units, respectively, which, in addition to a service condition, are subject to a performance condition that impacts the number of units which ultimately vests. The performance condition is based upon our achievement of the respective fiscal years’ Funds From Operations, or FFO, per share targets. Upon evaluating the results of the performance condition, the final number of units is determined and such units vest based on satisfaction of the service conditions. The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date, provided the grantee continues employment on each anniversary date. Based on our 2011 FFO per diluted share and unit, all of the 2011 long-term incentive units satisfied the performance condition. The grant date fair values, which equal the market price of Digital Realty Trust, Inc. common stock, are being expensed on a straight-line basis for service awards over the vesting period of the long-term incentive units, which ranges from three to five years. For performance based awards, we expense the fair value using an accelerated method with each vesting tranche valued as a separate award.

42

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

The expense recorded for the three months ended September 30, 2012 and 2011 related to long-term incentive units was approximately $2.1 million and $2.2 million, respectively, and approximately $7.2 million and $6.6 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.4 million and $0.2 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.8 million and $0.6 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the long-term incentive units totaled $15.4 million and $12.7 million as of September 30, 2012 and December 31, 2011, respectively. We expect to recognize this unearned compensation over the next 2.7 years on a weighted average basis.

(b) Class C Profits Interest Units

On May 2, 2007, we granted awards of Class C Profits Interest Units of the Operating Partnership or similar stock-based performance awards, which we refer to collectively as the Class C Units, under the Amended and Restated 2004 Incentive Award Plan (2007 Grant) to each of our named executive officers and certain other officers and employees.

The Class C Units subject to this award were subject to vesting based on the achievement of a total stockholder return (which we refer to as the market condition) as measured on November 1, 2008 (which we refer to as the first measurement date) and May 1, 2010 (which we refer to as the second measurement date).

We previously determined that the market condition with respect to the first measurement date was not achieved. On May 1, 2010, we determined that 593,316 of the Class C Units and 20,169 shares of restricted stock subject to the 2007 Grant satisfied the market condition on the second measurement date (May 1, 2010), with the value of these units equal to the maximum amount of the award pool payable pursuant to the 2007 Grant on the second measurement date. Of the Class C Units that satisfied the market condition on May 1, 2010, 60% vested on May 1, 2010 and the remaining 40% will vest ratably each month thereafter for 24 months.

The fair value of the 2007 Grant was measured on the grant date using a Monte Carlo simulation to estimate the probability of the multiple market conditions being satisfied. The Monte Carlo simulation uses a statistical formula underlying the Black-Scholes and binomial formulas, and such simulation was run approximately 100,000 times. For each simulation, the value of the payoff was calculated at the settlement date and was then discounted to the grant date at a risk-free interest rate. The expected value of the Class C Units on the grant date was determined by multiplying the average of the values over all simulations by the number of outstanding shares of Digital Realty Trust, Inc. common stock and Operating Partnership units. The valuation was performed in a risk-neutral framework, so no assumption was made with respect to an equity risk premium. Other significant assumptions used in the valuation included an expected term of 36 months, expected stock price volatility of 23%, a risk-free interest rate of 4.6%, and a dividend growth rate of 5.0%. The fixed award limit under the plan was $17 million for the first market condition and $40 million for the second market condition, and there were 69.2 million shares of Digital Realty Trust, Inc. common stock and Operating Partnership units outstanding as of the 2007 grant date. The grant date fair value of these awards of approximately $11.8 million will be recognized as compensation expense on a straight-line basis over the expected service period of five years, which ended during the three months ended June 30, 2012. The unearned compensation as of September 30, 2012 and December 31, 2011 was $0 and $0.6 million, respectively. As of June 30, 2012, all of the Class C Units subject to the 2007 Grant had vested. We recognized compensation expense related to the Class C Units subject to the 2007 Grant of $0 and $0.7 million for the three months ended September 30, 2012 and 2011, respectively, and $0.5 million and $1.6 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0 and $0.1 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.1 million and $0.2 million for the nine months ended September 30, 2012 and 2011, respectively.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

(c) Stock Options

The fair value of each option granted under the Amended and Restated 2004 Incentive Award Plan is estimated on the date of the grant using the Black-Scholes option-pricing model. For the nine months ended September 30, 2012 and 2011, no stock options were granted. The fair values are being expensed on a straight-line basis over the vesting period of the options, which ranges from four to five years. The expense recorded for the three months ended September 30, 2012 and 2011 was approximately $0 and $0.2 million, respectively, and approximately $0.2 million and $0.7 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0 and $0.1 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.1 million and $0.2 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the stock options totaled $0 and $0.3 million as of September 30, 2012 and December 31, 2011, respectively. All unearned compensation has been recognized as of September 30, 2012.

The following table summarizes the Amended and Restated 2004 Incentive Award Plan’s stock option activity for the nine months ended September 30, 2012:

	Period ended September 30, 2012
	Shares			Weighted average exercise price
Options outstanding, beginning of period		337,760		$	24.17
Exercised		(207,550	)		20.11
Cancelled / Forfeited		(301	)		41.73
Options outstanding, end of period		129,909		$	30.62
Exercisable, end of period		129,909		$	30.62

The following table summarizes information about stock options outstanding and exercisable as of September 30, 2012:

Options outstanding									Options exercisable
Exercise price	Number outstanding		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic value		Number exercisable		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic value
$12.00-13.02		34,870		2.08	$	12.00	$	2,017,230		34,870		2.08	$	12.00	$	2,017,230
$20.37-28.09		17,000		3.14		21.28		825,720		17,000		3.14		21.28		825,720
$33.18-41.73		78,039		4.54		40.97		2,253,392		78,039		4.54		40.97		2,253,392
		129,909		3.70	$	30.62	$	5,096,342		129,909		3.70	$	30.62	$	5,096,342

44

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

(d) Restricted Stock

During the nine months ended September 30, 2012 and 2011, certain employees were granted an aggregate of 45,184 and 41,220 shares of restricted stock, respectively. During the nine months ended September 30, 2012 and 2011, certain employees were also granted an aggregate of 52,947 and 50,999 shares of restricted stock, respectively, which, in addition to a service condition, are subject to a performance condition that impacts the number of shares which ultimately vests. The performance condition is based upon our achievement of the respective year’s FFO per share targets. Upon evaluating the results of the performance condition, the final number of shares is determined and such shares vest based on satisfaction of the service conditions. The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date provided the grantee continues employment on each anniversary date. Based on our 2011 FFO per diluted share and unit, all of the 2011 restricted stock satisfied the performance condition.

The grant date fair values, which equal the market price of Digital Realty Trust, Inc. common stock, are being expensed on a straight-line basis for service awards over the vesting period of the restricted stock, which ranges from three to four years. For performance based awards, we expense the fair value using an accelerated method with each vesting tranche valued as a separate award.

The expense recorded for the three months ended September 30, 2012 and 2011 related to grants of restricted stock was approximately $0.6 million and $0.5 million, respectively, and approximately $2.1 million and $1.5 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.6 million and $0.4 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $1.5 million and $1.1 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the restricted stock totaled $8.8 million and $5.5 million as of September 30, 2012 and December 31, 2011, respectively. We expect to recognize this unearned compensation over the next 2.9 years on a weighted average basis.

13. Derivative Instruments

Currently, we use interest rate swaps to manage our interest rate risk. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves. The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

To comply with the provisions of fair value accounting guidance, we incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we have considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although we have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties. However, as of December 31, 2011, we have assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and have determined that the credit valuation adjustments are not significant to the overall valuation of our derivatives. As a result, we have determined that our derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. We do not have any fair value measurements on a recurring basis using significant unobservable inputs (Level 3) as of September 30, 2012 or December 31, 2011.

Cash Flow Hedges of Interest Rate Risk

Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposure to interest rate movements related to US LIBOR, GBP LIBOR and EURIBOR based mortgage loans as well as the U.S. LIBOR and SGD-SOR based tranches of the unsecured term loan. To accomplish this objective, we primarily use interest rate swaps as part of our interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Under an interest rate cap, if the reference interest rate, such as one-month LIBOR, increases above the cap rate, the holder of the instrument receives a payment based on the notional value of the instrument, the length of the period, and the difference between the current reference rate and the cap rate. If the reference rate increases above the cap rate, the payment received under the interest rate cap will offset the increase in the payments due under the variable rate notes payable.

We record all our interest rate swaps on the condensed consolidated balance sheet at fair value. In determining the fair value of our interest rate swaps, we consider the credit risk of our counterparties. These counterparties are generally larger financial institutions engaged in providing a variety of financial services. These institutions generally face similar risks regarding adverse changes in market and economic conditions, including, but not limited to, fluctuations in interest rates, exchange rates, equity and commodity prices and credit spreads. The current and pervasive disruptions in the financial markets have heightened the risks to these institutions.

Interest rate caps are viewed as a series of call options or caplets which exist for each period the cap agreement is in existence. As each caplet expires, the related cost of the expired caplet is amortized to interest expense with the remaining caplets carried at fair value. The value of interest rate caps is primarily impacted by interest rates, market expectations about interest rates, and the remaining life of the instrument. In general, increases in interest rates, or anticipated increases in interest rates, will increase the value of interest rate caps. As the remaining life of an interest rate cap decreases, the value of the instrument will generally decrease towards zero. The purchase price of an interest rate cap is amortized to interest expense over the contractual life of the instrument. For interest rate caps that are designated as cash flow hedges under accounting guidance as it relates to derivative instruments, the change in the fair value of an effective interest rate cap is recorded to accumulated other comprehensive income in equity. Amounts we are entitled to under interest rate caps, if any, are recognized on an accrual basis, and are recorded as a reduction against interest expense in the accompanying condensed consolidated statements of operations.

Our agreements with some of our derivative counterparties provide that (1) we could be declared in default on our derivative obligations if repayment of any of our indebtedness over $75.0 million is accelerated by the lender due to our default on the indebtedness and (2) we could be declared in default on a certain derivative obligation if we default on any of our indebtedness, including a default where repayment of underlying indebtedness has not been accelerated by the lender.

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income (loss) and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During 2012, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The fair value of these derivatives was ($9.4) million and ($5.5) million at September 30, 2012 and December 31, 2011, respectively. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three and nine months ended September 30, 2012 and 2011, respectively, there were no ineffective portions to our interest rate swaps.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

Amounts reported in accumulated other comprehensive loss related to interest rate swaps will be reclassified to interest expense as interest payments are made on our debt. As of September 30, 2012, we estimate that an additional $6.3 million will be reclassified as an increase to interest expense during the twelve months ending September 30, 2013, when the hedged forecasted transactions impact earnings.

As of September 30, 2012 and December 31, 2011, we had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (in thousands):

Notional Amount															Fair Value at Significant Other Observable Inputs (Level 2)
As of September 30, 2012			As of December 31, 2011			Type of Derivative		Strike Rate		Effective Date		Expiration Date			As of September 30, 2012			As of December 31, 2011
	$69,235	(1)	$	66,563	(1)		Swap		2.980		April 6, 2009		Nov. 30, 2013		$	(1,970	)	$	(2,363	)
	13,053	(2)		13,319	(2)		Swap		3.981		May 17, 2006		Jul. 18, 2013			(387	)		(583	)
	9,444	(2)		9,636	(2)		Swap		4.070		Jun. 23, 2006		Jul. 18, 2013			(287	)		(435	)
	8,312	(2)		8,480	(2)		Swap		3.989		Jul. 27, 2006		Oct. 18, 2013			(324	)		(432	)
	—			39,483	(2)		Swap		3.776		Dec. 5, 2006		Jan. 18, 2012	(3)		—			(41	)
	—			33,946	(2)		Swap		4.000		Dec. 20, 2006		Jan. 18, 2012	(3)		—			(38	)
	38,580	(2)		38,883	(2)		Swap		2.703		Dec. 3, 2009		Sep. 4, 2014			(1,773	)		(1,592	)
	410,905	(6)		—			Swap		0.717		Various		Various			(4,063	)		—
	154,391	(7)		—			Swap		0.925		Jul. 6, 2012		Apr. 18, 2017			(554	)		—
	—			16,163			Cap		4.000		June 24, 2009		June 25, 2012	(4)		—			—
	—			20,500			Cap		4.000		Aug. 4, 2010		June 15, 2013	(5)		—			—
	$703,920		$	246,973											$	(9,358	)	$	(5,484	)

(1) Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.

(2) Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.

(3) The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.

(4) This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.

(5) This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.

(6) Represents the U.S. Dollar tranche of the unsecured term loan.

(7) Represents the Singapore Dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

14. Fair Value of Instruments

We disclose fair value information about all financial instruments, whether or not recognized in the condensed consolidated balance sheets, for which it is practicable to estimate fair value.

Current accounting guidance requires the Company to disclose fair value information about all financial instruments, whether or not recognized in the balance sheets, for which it is practicable to estimate fair value. The Company’s disclosures of estimated fair value of financial instruments at September 30, 2012 and December 31, 2011 were determined using available market information and appropriate valuation methods. Considerable judgment is necessary to interpret market data and develop estimated fair value. The use of different market assumptions or estimation methods may have a material effect on the estimated fair value amounts.

The carrying amounts for cash and cash equivalents, restricted cash, accounts and other receivables, accounts payable and other accrued liabilities, security deposits and prepaid rents approximate fair value because of the short-term nature of these instruments. As described in note 13, the interest rate cap and interest rate swaps are recorded at fair value.

We calculate the fair value of our mortgage loans, unsecured senior notes and exchangeable senior debentures based on currently available market rates assuming the loans are outstanding through maturity and considering the collateral and other loan terms. In determining the current market rate for fixed rate debt, a market spread is added to the quoted yields on federal government treasury securities with similar maturity dates to debt. The carrying value of our global revolving credit facility approximates fair value, due to the short-term nature of this instrument along with the variability of interest rates.

As of September 30, 2012 and December 31, 2011, the aggregate estimated fair value and carrying value of our global revolving credit facility, unsecured senior notes, exchangeable senior debentures, mortgage loans and other secured loan were as follows (in thousands):

	As of September 30, 2012				As of December 31, 2011
	Estimated Fair Value		Carrying Value		Estimated Fair Value		Carrying Value
Global revolving credit facility (1)	$	526,372	$	526,372	$	275,106	$	275,106
Unsecured term loan (2)		754,935		754,935		—		—
Unsecured senior notes (3)(4)		1,923,854		1,737,881		1,502,271		1,441,072
Exchangeable senior debentures (3)		460,347		266,400		438,327		266,400
Mortgage loans (3)		850,356		794,485		1,007,615		947,132
Other secured loan (3)		—		—		10,688		10,500
	$	4,515,864	$	4,080,073	$	3,234,007	$	2,940,210

(1) The carrying value of our global revolving credit facility approximates estimated fair value, due to the short-term nature of this instrument along with the variability of interest rates.

(2) The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates.

(3) Valuations for our unsecured senior notes, mortgage loans and other secured loan are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes and exchangeable senior debentures are valued based on quoted market prices.

(4) The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes are net of discount of $12,119 and $8,928 in the aggregate as of September 30, 2012 and December 31, 2011, respectively.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

15. Related Party Transactions

In December 2006, we entered into ten leases with The tel(x) Group, Inc., or tel(x), pursuant to which tel(x) provides enhanced meet-me-room services to our customers. The initial terms of these leases expire in 2026, and tel(x) has options to extend them through 2046. tel(x) was acquired by GI Partners Fund II, LLP in November 2006, which, collectively with GI Partners Side Fund II, L.P., owned the majority of the outstanding stock of tel(x). Richard Magnuson, our director and Chairman until our 2012 Annual Meeting of Stockholders, or the Annual Meeting, is the chief executive officer of the advisor to GI Partners Fund II, LLP and GI Partners Side Fund II, L.P. During the year ended December 31, 2011, GI Partners Fund II, LLP and GI Partners Side Fund II, L.P completed the sale of tel(x) to an unrelated third party. Our condensed consolidated statements of operations include rental revenues of approximately $12.0 million and $11.4 million from tel(x) for the three months ended September 30, 2012 and 2011, respectively, and approximately $33.7 million and $30.9 million for the nine months ended September 30, 2012 and 2011, respectively, from leases entered into before tel(x) was sold to an unrelated third party. In connection with the lease agreements, we entered into an operating agreement with tel(x), effective as of December 1, 2006, with respect to joint sales and marketing efforts, designation of representatives to manage the national relationship between us and tel(x) and future meet-me-room facilities. As of September 30, 2012 and December 31, 2011, tel(x) leased from us 259,294 square feet under 43 lease agreements and 254,314 square feet under 41 lease agreements, respectively; all but two leases for 4,980 square feet, were entered into prior to the sale of tel(x) to an unrelated third party in September 2011.

We also entered into an agreement with tel(x), effective as of December 1, 2006, with respect to percentage rent arising out of potential future lease agreements for rentable space in buildings covered by the meet-me-room lease agreements. Percentage rent earned during the three months ended September 30, 2012 and 2011 amounted to approximately $1.7 million and $1.4 million, respectively, and $3.1 million and $2.1 million during the nine months ended September 30, 2012 and 2011, respectively. In addition, in connection with the lease agreements, we entered into a management agreement with tel(x), effective as of December 1, 2007, pursuant to which tel(x) agreed to provide us with certain management services in exchange for a management fee of one percent of rents actually collected by tel(x).

We are party to nine leases with SoftLayer, all of which are in place as of September 30, 2012. The initial terms of these leases expire from 2013 to 2025, and SoftLayer has options to extend them from 2018 through 2035. On August 3, 2010, GI Partners Fund III, L.P. acquired a controlling interest in SoftLayer. Richard Magnuson, our director and Chairman until our Annual Meeting, is also a manager of the general partner to GI Partners Fund III, L.P. Our condensed consolidated statements of operations include rental revenues of approximately $19.4 million and $4.7 million from SoftLayer for the three months ended September 30, 2012 and 2011, respectively, and approximately $41.2 million and $11.6 million for the nine months ended September 30, 2012 and 2011, respectively.

Mr. Magnuson did not stand for re-election to our Board of Directors at our Annual Meeting. His term as a member of our Board of Directors and our Chairman ended effective April 23, 2012, the date of the Annual Meeting.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

16. Commitments and Contingencies

We have agreed with the seller of 350 East Cermak Road to share a portion, not to exceed $135,000 per month, of rental revenue, adjusted for our costs to lease the premises, from the leases of the 192,000 square feet of space held for redevelopment. This revenue sharing agreement terminated in May 2012. We made payments of approximately $0.7 million and $1.2 million to the seller during the nine months ended September 30, 2012 and 2011, respectively.

As part of the acquisition of 29A International Business Park, the seller could earn additional consideration based on future net operating income growth in excess of certain performance targets, as defined. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to purchase would cause an amount to become probable of payment and therefore no amount is accrued as of September 30, 2012. The maximum amount that could be earned by the seller is $50.0 million SGD (or approximately $40.7 million based on the exchange rate as of September 30, 2012). The earnout contingency expires in November 2020.

One of the tenants at our Convergence Business Park property has an option to expand as part of their lease agreement, which expires in April 2017. As part of this option, development activities are not permitted on specifically identified expansion space within the property until April 2014. If the tenant elects to take this option, we can elect one of two options. The first option is to construct and develop an additional shell building on the expansion space. Concurrent with this obligation, the tenant would execute an amendment to the existing lease to reflect the expansion of the space and include the additional shell building. The second option is to sell the existing building and the expansion space to the tenant for a price of approximately $24.0 million and $225,000 per square acre, respectively, plus additional adjustments as provided in the lease.

As part of the acquisition of the noncontrolling interest in the entity that owns 2805 Lafayette Street from our joint venture partner, the partner could earn additional consideration if between May 4, 2012 and January 31, 2013, we enter into a qualifying lease for this property, as defined in the agreement. As of September 30, 2012, no leases were executed for this property that would cause an amount to become probable of payment and therefore, no amount is accrued as of September 30, 2012.

As part of the acquisition of the Sentrum Portfolio, the seller could earn additional consideration based on future net returns on vacant space to be redeveloped, but not currently leased, as defined in the purchase agreement for the acquisition. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to the purchase date would cause an amount to become probable of payment. The expected fair value of the contingent consideration as of September 30, 2012 that could be earned by the seller is £56.5 million (or approximately $91.3 million based on the exchange rate as of September 30, 2012) and is currently accrued in accounts payable and other accrued expenses in the condensed consolidated balance sheet. The earn-out contingency expires in July 2015. This amount will be reassessed on a quarterly basis.

Our properties require periodic investments of capital for tenant-related capital expenditures and for general capital improvements and from time to time in the normal course of our business, we enter into various construction contracts with third parties that may obligate us to make payments. At September 30, 2012, we had open commitments related to construction contracts of approximately $187.3 million.

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DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

17. Subsequent Events

On October 30, 2012, we declared the following dividends per share and the Operating Partnership declared an equivalent distribution per unit:

Share Class	Series D Preferred Stock		Series E Preferred Stock		Series F Preferred Stock		Common stock and common unit
Dividend and distribution amount	$	0.343750	$	0.437500	$	0.414063	$	0.730000
Dividend and distribution payable date		December 31, 2012		December 31, 2012		December 31, 2012		January 15, 2013
Dividend payable to shareholders of record on		December 14, 2012		December 14, 2012		December 14, 2012		December 14, 2012
Annual equivalent rate of dividend and distribution	$	1.375	$	1.750	$	1.65625	$	2.920

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS.

The following discussion should be read in conjunction with the condensed consolidated financial statements and notes thereto appearing elsewhere in this report. This report contains forward-looking statements within the meaning of the federal securities laws. In particular, statements pertaining to our capital resources, expected use of proceeds from our equity distribution program and other securities offerings, expected use of borrowings under our credit facilities, portfolio performance, leverage policy, acquisition and capital expenditure plans, supply and demand for data center space, capitalization rates and expected rental rates on new or renewed data center space, as well as our discussion of “Factors Which May Influence Future Results of Operations,” contain forward-looking statements. Likewise, all of our statements regarding anticipated market conditions, demographics and results of operations are forward-looking statements. You can identify forward-looking statements by the use of forward-looking terminology such as “believes,” “expects,” “may,” “will,” “should,” “seeks,” “approximately,” “intends,” “plans,” “pro forma,” “estimates” or “anticipates” or the negative of these words and phrases or similar words or phrases which are predictions of or indicate future events or trends and discussions which do not relate solely to historical matters. You can also identify forward-looking statements by discussions of strategy, plans or intentions. Forward-looking statements involve numerous risks and uncertainties and you should not rely on them as predictions of future events. Forward-looking statements depend on assumptions, data or methods that may be incorrect or imprecise and that we may not be able to realize. We do not guarantee that the transactions and events described will happen as described or that they will happen at all. The following factors, among others, could cause actual results and future events to differ materially from those set forth or contemplated in the forward-looking statements: the impact of the recent deterioration in global economic, credit and market conditions, including the downgrade of the U.S. government’s credit rating; current local economic conditions in our geographic markets; decreases in information technology spending, including as a result of economic slowdowns or recession; adverse economic or real estate developments in our industry or the industry sectors that we sell to (including risks relating to decreasing real estate valuations and impairment charges); our dependence upon significant tenants; bankruptcy or insolvency of a major tenant or a significant number of smaller tenants; defaults on or non-renewal of leases by tenants; our failure to obtain necessary debt and equity financing; increased interest rates and operating costs; risks associated with using debt to fund our business activities, including re-financing and interest rate risks, our failure to repay debt when due, adverse changes in our credit ratings or our breach of covenants or other terms contained in our loan facilities and agreements; financial market fluctuations; changes in foreign currency exchange rates; our inability to manage our growth effectively; difficulty acquiring or operating properties in foreign jurisdictions; our failure to successfully integrate and operate acquired or redeveloped properties or businesses; risks related to joint venture investments, including as a result of our lack of control of such investments; delays or unexpected costs in development or redevelopment of properties; decreased rental rates or increased vacancy rates; increased competition or available supply of data center space; our inability to successfully develop and lease new properties and space held for redevelopment; difficulties in identifying properties to acquire and completing acquisitions; our inability to acquire off-market properties; our inability to comply with the rules and regulations applicable to reporting companies; Digital Realty Trust, Inc.’s failure to maintain its status as a REIT; possible adverse changes to tax laws; restrictions on our ability to engage in certain business activities; environmental uncertainties and risks related to natural disasters; losses in excess of our insurance coverage; changes in foreign laws and regulations, including those related to taxation and real estate ownership and operation; and changes in local, state and federal regulatory requirements, including changes in real estate and zoning laws and increases in real property tax rates.

While forward-looking statements reflect our good faith beliefs, they are not guaranties of future performance. We disclaim any obligation to publicly update or revise any forward-looking statement to reflect changes in underlying assumptions or factors, new information, data or methods, future events or other changes.

The risks included here are not exhaustive, and additional factors could adversely affect our business and financial performance, including factors and risks included in other sections of this report, including under Part II, Item 1A, Risk Factors. Moreover, we operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time and it is not possible for management to predict all such risk factors, nor can we assess the impact of all such risk factors on the business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements. Given these risks and uncertainties, you should not place undue reliance on forward-looking statements as a prediction of actual results.

Occupancy percentages included in the following discussion, for some of our properties, are calculated based on factors in addition to contractually leased square feet, including available power, required support space and common area.

Overview

Our company. Digital Realty Trust, Inc. completed its initial public offering of common stock, or our IPO, on November 3, 2004. We believe that we have operated in a manner that has enabled us to qualify, and have elected to be treated, as a REIT under Sections 856 through 860 of the Code. Our company was formed on March 9, 2004. During the period from our formation until we commenced operations in connection with the completion of our IPO, we did not have any corporate activity other than the issuance of shares of Digital Realty Trust, Inc. common stock in connection with the initial capitalization of the company. Our operating partnership was formed on July 21, 2004.

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Business and strategy. Our primary business objectives are to maximize: (i) sustainable long-term growth in earnings and funds from operations per share and unit and (ii) cash flow and returns to our stockholders and our operating partnership’s unitholders, including through the payment of distributions. We expect to achieve our objectives by focusing on our core business of investing in and redeveloping technology-related real estate. A significant component of our current and future internal growth is anticipated through the development of our existing space held for redevelopment and new properties. We target high quality, strategically located properties containing applications and operations critical to the day-to-day operations of corporate enterprise datacenter and technology industry tenants and properties that may be redeveloped for such use. Most of our properties contain fully redundant electrical supply systems, multiple power feeds, above-standard precision cooling systems, raised floor areas, extensive in-building communications cabling and high-level security systems. We focus solely on technology-related real estate because we believe that the growth in corporate datacenter adoption and the technology-related real estate industry generally will continue to be superior to that of the overall economy.

As of September 30, 2012, we owned an aggregate of 110 technology-related real estate properties, excluding three properties held as investments in unconsolidated joint ventures, with approximately 21.2 million rentable square feet including approximately 2.2 million square feet of space held for redevelopment. At September 30, 2012, approximately 1,717,000 square feet of space was under construction for Turn-Key Flex^SM, Powered Base Building^® and Custom Solutions (formerly referred to as Build-to-Suit) product, all of which are expected to be income producing on or after completion, in 12 U.S. domestic markets, one European market, two Australian markets and Singapore, consisting of approximately 1,026,000 square feet of development projects and 691,000 square feet of redevelopment projects. We have developed detailed, standardized procedures for evaluating acquisitions to ensure that they meet our financial, technical and other criteria. We expect to continue to acquire additional assets as a part of our growth strategy. We intend to aggressively manage and lease our assets to increase their cash flow. We intend to continue to build out our redevelopment portfolio when justified by anticipated returns.

We may acquire properties subject to existing mortgage financing and other indebtedness or we may incur new indebtedness in connection with acquiring or refinancing these properties. Debt service on such indebtedness will have a priority over any cash dividends with respect to Digital Realty Trust, Inc.’s common stock and preferred stock. We currently intend to limit our indebtedness to 60% of our total enterprise value and, based on the closing price of Digital Realty Trust, Inc. common stock on September 30, 2012 of $69.85, our ratio of debt to total enterprise value was approximately 30% as of September 30, 2012. Our total enterprise value is defined as the sum of the market value of Digital Realty Trust, Inc.’s outstanding common stock (which may decrease, thereby increasing our debt to total enterprise value ratio), excluding options issued under our company’s incentive award plan, plus the liquidation value of Digital Realty Trust, Inc.’s preferred stock, plus the aggregate value of our operating partnership’s units not held by Digital Realty Trust, Inc. (with the per unit value equal to the market value of one share of its common stock and excluding long-term incentive units and Class C units), plus the book value of our total consolidated indebtedness.

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Revenue base. As of September 30, 2012, we owned 110 properties through our operating partnership, excluding three properties held as investments in unconsolidated joint ventures. These properties are mainly located throughout the U.S., with 18 properties located in Europe, one property in Asia and one property in Canada. We, through our predecessor, acquired our first portfolio property in January 2002 and have added properties as follows:

Year Ended December 31:	Properties Acquired  (1)		Net Rentable Square Feet (2)		Square Feet of Space Held for Redevelopment as of September 30, 2012 (3)
2002		5		1,156,483		46,530
2003		6		1,058,360		—
2004		10		2,529,940		157,363
2005		20		3,388,978		161,319
2006		16		2,173,493		48,105
2007 (4)		13		2,128,913		178,905
2008		5		343,710		220,538
2009 (5)		6		995,465		613,139
2010		15		2,039,576		446,182
2011 (6)		6		619,752		112,691
2012		8		2,487,395		257,432
Properties owned as of September 30, 2012		110		18,922,065		2,242,204

(1) Excludes properties sold in 2007 and 2006: 100 Technology Center Drive (March 2007), 4055 Valley View Lane (March 2007) and 7979 East Tufts Avenue (July 2006). Also excludes a leasehold interest acquired in March 2007 related to an acquisition made in 2006.

(2) Current net rentable square feet as of September 30, 2012, which represents the current square feet at buildings under lease as specified in the applicable lease agreements plus management’s estimate of space available for lease based on engineering drawings. Includes tenants’ proportional share of common areas but excludes space held for redevelopment.

(3) Redevelopment space is unoccupied space that requires significant capital investment in order to develop datacenter facilities that are ready for use. Most often this is shell space. However, in certain circumstances this may include partially built datacenter space that was not completed by previous ownership and requires a large capital investment in order to build out the space. The amounts included in this table represent redevelopment space as of September 30, 2012 in the properties acquired during the relevant period.

(4) Includes three developed buildings (43915 Devin Shafron Drive, 43830 Devin Shafron Drive and 43790 Devin Shafron Drive) placed into service in 2010 and 2011 that are being included with a property (Devin Shafron buildings) that was acquired in 2007.

(5) Includes a developed building (21551 Beaumeade Circle) placed into service in 2011 that is being included with a property (21561 & 21571 Beaumeade Circle) that was acquired in 2009.

(6) Includes a developed building (3825 NW Aloclek Place) placed into service in 2012 that was acquired in 2011.

As of September 30, 2012, the properties in our portfolio were approximately 94.2% leased excluding 2.2 million square feet held for redevelopment. Due to the capital-intensive and long-term nature of the operations being supported, our lease terms are generally longer than standard commercial leases. As of September 30, 2012, our original average lease term was approximately 14 years, with an average of approximately seven years remaining. The majority of our leasing since the completion of our IPO has been at lease terms shorter than 12 years. Our lease expirations through December 31, 2013 are 4.9% of rentable square feet excluding space held for redevelopment as of September 30, 2012.

Operating revenues from properties outside the United States were $70.7 million and $28.8 million for the three months ended September 30, 2012 and 2011, respectively, and $146.2 million and $82.1 million for the nine months ended September 30, 2012 and 2011, respectively. Operating revenues from properties located in England were $43.1 million and $67.9 million, or 12.6% and 7.3% of total revenues, for the three and nine months ended September 30, 2012, respectively, and $10.6 million and $31.7 million, or 3.9% and 4.0% of total revenues, for the three and nine months ended September 30, 2012, respectively. For the three and nine months ended September 30, 2012 and 2011, no other foreign country comprised more than 10% of total revenues.

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Factors Which May Influence Future Results of Operations

Global market and economic conditions

In the United States and globally, market and economic conditions have been unprecedented over the past few years and challenging with tighter credit conditions and slower economic growth in all markets in which we own properties and conduct our operations. The U.S. and global economies have experienced a recession and face continued concerns about the systemic impact of adverse economic conditions, such as high energy costs, geopolitical issues, the availability and cost of credit, unstable global financial and mortgage markets, high corporate, consumer and governmental debt levels, high unemployment and declining residential and commercial real estate markets. The current European debt crisis, particularly most recently in Greece, Italy, Ireland, Portugal and Spain, has raised concerns regarding the debt burden of certain countries using the euro as their currency and their ability to meet future financial obligations, the overall stability of the euro and the suitability of the euro as a single currency given the diverse economic and political circumstances in individual eurozone countries. These concerns could lead to the re-introduction of individual currencies in one or more eurozone countries, or, in more extreme circumstances, the possible dissolution of the euro currency entirely. Should the euro be dissolved entirely, the legal and contractual consequences for parties to euro-denominated contracts are uncertain and would be determined by laws in effect at such time. These potential developments, or market perceptions concerning these and related issues, could adversely affect our leasing and financing activities, rents we receive, potential acquisitions and redevelopment projects in Europe.

As a result of these conditions, general economic conditions and the cost and availability of capital have been and may again be adversely affected in some or all of the markets in which we own properties and conduct our operations. Renewed or increased turbulence in the U.S., European, Asia Pacific and other international financial markets and economies may adversely affect our ability, and the ability of our tenants, to replace or renew maturing liabilities on a timely basis, access the capital markets to meet liquidity and capital expenditure requirements and may result in adverse effects on our, and our tenants’, financial condition and results of operations.

In addition, our access to funds under our global revolving credit facility and other lines of credit depend on the ability of the lenders that are parties to such facilities to meet their funding commitments to us. We cannot assure you that long-term disruptions in the global economy and the return of tighter credit conditions among, and potential failures or nationalizations of, third party financial institutions as a result of such disruptions will not have an adverse effect on our lenders. If our lenders are not able to meet their funding commitments to us, our business, results of operations, cash flows and financial condition could be adversely affected.

If we do not have sufficient cash flow to continue operating our business and are unable to borrow additional funds, access our existing lines of credit or raise equity or debt capital, we may need to source alternative ways to increase our liquidity. Such alternatives may include, without limitation, curtailing development or redevelopment activity, disposing of one or more of our properties possibly on disadvantageous terms or entering into or renewing leases on less favorable terms than we otherwise would.

Rental income. The amount of rental income generated by the properties in our portfolio depends on several factors, including our ability to maintain or improve the occupancy rates of currently leased space and to lease currently available space and space available from lease terminations. Excluding 2.2 million square feet held for redevelopment, as of September 30, 2012, the occupancy rate of the properties in our portfolio was approximately 94.2% of our net rentable square feet.

As of September 30, 2012, we had 1,868 leases with a total of 570 tenants. As of September 30, 2012, approximately 83% of our leases (on a rentable square footage basis) contained base rent escalations that were either fixed (generally ranging from 2% to 4%) or indexed based on a consumer price index or other similar inflation related index. We cannot assure you that these escalations will cover any increases in our costs or will otherwise keep rental rates at or above market rates.

The amount of rental income generated by us also depends on our ability to maintain or increase rental rates at our properties. Included in our approximately 18.9 million net rentable square feet, excluding redevelopment space, at September 30, 2012 is approximately 388,000 net rentable square feet of space with extensive datacenter improvements that is currently, or will shortly be, available for lease. Since our IPO, we have leased approximately 3,067,000 square feet of similar space. These Turn-Key Flex^SM facilities are effective solutions for tenants who prefer to utilize a partner with the expertise or capital budget to provide extensive datacenter infrastructure and security. Our expertise in datacenter construction and operations enables us to lease space to these tenants at a premium over other uses. In addition, as of September 30, 2012, we had approximately 2.2 million square feet of redevelopment space, or approximately 10% of the total rentable space in our portfolio, including three vacant properties comprising approximately 353,000 square feet. Our ability to grow earnings depends in part on our ability to redevelop space and lease redevelopment space at favorable rates, which we may not be able to obtain. Redevelopment space requires significant capital investment in order to develop datacenter facilities that are ready for use and, in addition, we may require additional time or encounter delays in securing tenants for redevelopment space. We may purchase additional vacant properties and properties with vacant redevelopment space in the future. We will require additional capital to finance our redevelopment activities, which may not be available or may not be available on terms acceptable to us, including as a result of the conditions described above under “Global market and economic conditions.”

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Economic downturns, including as a result of the conditions described above under “Global market and economic conditions,” or regional downturns affecting our markets or downturns in the technology-related real estate industry that impair our ability to lease or renew or re-lease space, or otherwise reduce returns on our investments or the ability of our tenants to fulfill their lease commitments, as in the case of tenant bankruptcies, could adversely affect our ability to maintain or increase rental rates at our properties.

Scheduled lease expirations. Our ability to re-lease expiring space at rental rates equal to or in excess of current rental rates will impact our results of operations. In addition to approximately 1.1 million square feet of available space in our portfolio, which excludes approximately 2.2 million square feet available for redevelopment as of September 30, 2012, leases representing approximately 1.2% and 3.7% of the net rentable square footage of our portfolio are scheduled to expire during the three months ending December 31, 2012 and the year ending December 31, 2013, respectively.

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During the nine months ended September 30, 2012, we signed new leases totaling approximately 601,000 square feet of space and renewal leases totaling approximately 684,000 square feet of space. The following table summarizes our leasing activity in the nine months ended September 30, 2012:

	Number of Leases (1)		Rentable Square Feet  (2)		Expiring Rates (3)		New Rates (3)		Rental Rate Changes			TI’s/Lease Commissions Per Square Foot (4)		Weighted Average  Lease Terms (months)
Leasing Activity (5)(6)
Renewals Signed
Turn-Key Flex		19		179,670	$	157.79	$	165.68		5.0	%	$	8.19		91.2
Powered Base Building		12		375,886	$	29.53	$	36.00		21.9	%	$	16.60		108.0
Non-technical		26		128,797	$	24.48	$	25.82		5.5	%	$	2.99		100.0
New Leases Signed
Turn-Key Flex		49		416,715		—	$	156.41		—		$	65.10		119.9
Powered Base Building		4		52,026		—	$	26.96		—		$	6.53		174.0
Custom Solutions		2		86,691		—	$	65.39		—		$	33.08		116.3
Non-technical		28		45,375		—	$	28.02		—		$	13.09		91.3
Leasing Activity Summary (5)
Turn-Key Flex		68		596,385		—	$	159.20		—			—
Powered Base Building		16		427,912		—	$	34.90		—			—
Custom Solutions		2		86,691		—	$	65.39		—			—
Non-technical		54		174,172		—	$	26.39		—			—

(1) The number of leases represents the leased-unit count; a lease could include multiple units.

(2) For some of our properties, we calculate square footage based on factors in addition to contractually leased square feet, including power, required support space and common area.

(3) Rental rates represent annual estimated cash rent per rentable square foot adjusted for straight-line rents in accordance with GAAP. GAAP rental rates are inclusive of tenant concessions, if any.

(4) Excludes short term leases.

(5) Excludes 40 renewed colocation leases for 31,005 rentable square feet at an average GAAP rental rate of $170.24 per square foot and 49 new colocation leases for 15,866 rentable square feet at an average GAAP rental rate of $214.61 per square foot.

(6) Commencement dates for the leases signed range from 2012 to 2014.

Our ability to re-lease or renew expiring space at rental rates equal to or in excess of current rental rates will impact our results of operations. We continue to see strong demand in most of our key markets for datacenter space and expect the rental rates we are likely to achieve on any new (re-leased) or renewed datacenter space leases for 2012 expirations will generally be higher than the rates currently being paid for the same space. For the nine months ended September 30, 2012, rents on renewed space increased by an average of 5.0% on a GAAP basis on our Turn-Key Flex^SM space compared to the expiring rents and increased by an average of 21.9% on a GAAP basis on our Powered Base Building space compared to the expiring rents. Our past performance may not be indicative of future results, and we cannot assure you that leases will be renewed or that our properties will be re-leased at all or at rental rates equal to or above the current average rental rates. Further, re-leased/renewed rental rates in a particular market may not be consistent with rental rates across our portfolio as a whole due to a number of factors, including local real estate conditions, local supply and demand for datacenter space, competition from other datacenter developers or operators, the condition of the property and whether the property, or space within the property, has been redeveloped.

Market concentration. We depend on the market for technology-based real estate in specific geographic regions and significant changes in these regional markets can impact our future results. As of September 30, 2012, our portfolio was geographically concentrated in the following metropolitan markets:

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Metropolitan Market	Percentage of September 30, 2012 total annualized rent (1)
London, England		12.5	%
Silicon Valley		11.1	%
Dallas		10.9	%
Northern Virginia		9.2	%
New York Metro		9.0	%
San Francisco		8.2	%
Chicago		8.0	%
Phoenix		7.1	%
Boston		4.7	%
Los Angeles		4.3	%
Dublin, Ireland		2.0	%
Paris, France		2.0	%
Other		11.0	%
		100.0	%

(1) Annualized rent is monthly contractual rent (defined as cash base rent before abatements) under existing leases as of September 30, 2012 multiplied by 12. The aggregate amount of abatements for the nine months ended September 30, 2012 was approximately $14.4 million.

Operating expenses. Our operating expenses generally consist of utilities, property and ad valorem taxes, property management fees, insurance and site maintenance costs, as well as rental expenses on our ground and building leases. In particular, our buildings require significant power to support the datacenter operations contained in them. Many of our leases contain provisions under which the tenants reimburse us for a portion of property operating expenses and real estate taxes incurred by us. However, we generally are not entitled to reimbursement of property operating expenses and real estate taxes under our leases for Turn-Key Flex^SM facilities. We also incur general and administrative expenses, including expenses relating to our asset management function, as well as significant legal, accounting and other expenses related to corporate governance, SEC reporting and compliance with the various provisions of the Sarbanes-Oxley Act. Increases or decreases in such operating expenses will impact our overall performance. We expect to incur additional operating expenses as we continue to expand.

Climate change legislation. In June 2009, the U.S. House of Representatives approved comprehensive clean energy and climate change legislation intended to cut greenhouse gas, or GHG, emissions, create new clean energy jobs and enhance the energy independence of the United States, which included a cap-and-trade program for GHG emissions. The U.S. Senate did not subsequently pass similar legislation and following Congressional elections in November 2010 (in which control of the House of Representatives passed from the Democratic Party to the Republican Party), the likelihood that Congress will pass any climate change and/or energy legislation that would include a cap-and-trade program, or any similar type program, for GHG emissions in the near term has diminished. As a result, action to reduce GHG emissions likely will be focused on regulatory agencies, primarily the U.S. Environmental Protection Agency, or EPA, and state actions. The EPA has been moving aggressively to regulate GHG emissions from automobiles and large stationary sources, including electricity producers, using its own authority under the Clean Air Act. The EPA made an endangerment finding in 2009 that allows it to create regulations imposing emission reporting, permitting, control technology installation, and monitoring requirements applicable to certain emitters of GHGs, including facilities that provide electricity to our data centers, although the materiality of the impacts will not be known until all regulations are finalized. The EPA has already finalized its GHG “reporting rule,” which requires that certain emitters, including electricity generators, monitor and report GHG emissions. The EPA has also finalized its “tailoring rule,” which imposes certain permitting and control technology requirements upon newly-constructed or modified facilities which emit GHGs over a certain threshold under the Clean Air Act New Source Review Prevention of Significant Deterioration, or NSR PSD, and Title V permitting programs. As a result, NSR PSD or Title V permits issued after January 2, 2011, for new or modified electricity generating and other facilities may need to address GHG emissions, including by requiring the installation of Best Available Control Technology. Some of those regulations have been finalized and currently are in litigation, and courts have rejected certain legal challenges to the endangerment findings, the tailoring rule, and other regulations. In addition, the EPA proposed in April 2012 a rule that would set a GHG emission standard applicable to new electricity generating units. States have also taken actions to regulate GHG emissions. For example, California enacted AB 32,

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the Global Warming Solutions Act of 2006, which established the first statewide program in the United States to limit GHG emissions and impose penalties for non-compliance. The California Air Resources Board, or CARB, has taken, and plans to take, various actions to implement AB 32, including the approval in December 2008 of an AB 32 Scoping Plan summarizing a number of GHG-reduction strategies for California. CARB approved in December 2010 and revised in October 2011 a GHG cap-and-trade program, which is scheduled to require certain generators and importers of electricity, as well as other entities, to obtain compliance instruments beginning in 2013. As another example of state action, the Western Climate Initiative, which once included seven states and four Canadian provinces, has developed GHG reduction strategies, among them a GHG cap-and-trade program. In addition, since 2005 the European Union (including the United Kingdom) has been operating under a cap-and-trade program, which directly affects the largest emitters of greenhouse gases, including electricity producers from whom we purchase power. Any additional taxation or regulation of energy use, including as a result of (i) new legislation that Congress may pass, (ii) the regulations that the U.S. EPA has proposed or finalized, (iii) regulations under legislation that states have passed or may pass, or (iv) any further reductions in the EU greenhouse gas cap could significantly increase our costs, and we may not be able to effectively pass all of these costs on to our tenants.

Interest rates. As of September 30, 2012, we had approximately $703.9 million of variable rate debt, subject to interest rate swap agreements, including $138.6 million of mortgage debt and $565.3 million on our unsecured term loan, along with $526.4 million and $189.6 million of variable rate debt that was outstanding on the global revolving credit facility and the unswapped portion of the unsecured term loan, respectively. The availability of debt and equity capital may decrease as a result of the circumstances described above under “Global market and economic conditions.” The effects on commercial real estate mortgages, if available, include, but may not be limited to: higher loan spreads, tightened loan covenants, reduced loan to value ratios resulting in lower borrower proceeds and higher principal payments. Potential future increases in interest rates and credit spreads may increase our interest expense and fixed charges and negatively affect our financial condition and results of operations, potentially impacting our future access to the debt and equity capital markets. Increased interest rates may also increase the risk that the counterparties to our swap agreements will default on their obligations, which could further increase our interest expense. If we cannot obtain capital from third party sources, we may not be able to acquire or develop properties when strategic opportunities exist, satisfy our debt service obligations or pay the cash dividends to Digital Realty Trust, Inc.’s stockholders necessary to maintain its qualification as a REIT.

Demand for datacenter space. Our portfolio of properties consists primarily of technology-related real estate and datacenter real estate in particular. A decrease in the demand for, or increase in supply of, datacenter space, Internet gateway facilities or other technology-related real estate would have a greater adverse effect on our business and financial condition than if we owned a portfolio with a more diversified tenant base or less specialized use. Our redevelopment activities make us particularly susceptible to general economic slowdowns, including recessions and the other circumstances described above under “Global market and economic conditions,” as well as adverse developments in the corporate datacenter, Internet and data communications and broader technology industries. Any such slowdown or adverse development could lead to reduced corporate IT spending or reduced demand for datacenter space. Reduced demand could also result from business relocations, including to markets that we do not currently serve. Changes in industry practice or in technology, such as virtualization technology, more efficient computing or networking devices, or devices that require higher power densities than today’s devices, could also reduce demand for the physical datacenter space we provide or make the tenant improvements in our facilities obsolete or in need of significant upgrades to remain viable. In addition, the development of new technologies, the adoption of new industry standards or other factors could render many of our tenants’ current products and services obsolete or unmarketable and contribute to a downturn in their businesses, thereby increasing the likelihood that they default under their leases, become insolvent or file for bankruptcy. In addition, demand for datacenter space in our properties, or the rates at which we lease space, may be adversely impacted either across our portfolio or in specific markets as a result of an increase in the number of competitors, or the amount of space being offered in our markets and other markets by our competitors.

Critical Accounting Policies

Our discussion and analysis of our financial condition and results of operations are based upon our condensed consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles, or GAAP. The preparation of these financial statements in conformity with GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amount of revenues and expenses in the reporting period. Our actual results may differ from these estimates. We have provided a summary of our significant accounting policies in note 2 to our condensed consolidated financial statements included elsewhere in this report. We describe below those accounting policies that require material subjective or complex judgments and that have the most significant impact on our financial condition and consolidated results of operations. Our management evaluates these estimates on an ongoing basis, based upon information currently available and on various assumptions management believes are reasonable as of the date on the front cover of this report.

Investments in Real Estate

Acquisition of real estate. The price that we pay to acquire a property is impacted by many factors including the condition of the property and improvements, the occupancy of the building, the existence of above and below market tenant leases, the creditworthiness of the tenants, favorable or unfavorable financing, above or below market ground leases and numerous other factors.

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Accordingly, we are required to make subjective assessments to allocate the purchase price paid to acquire investments in real estate among the assets acquired and liabilities assumed based on our estimate of the fair values of such assets and liabilities. This includes determining the value of the property and improvements, land, any ground leases, tenant improvements, in-place tenant leases, tenant relationships, the value (or negative value) of above (or below) market leases, any debt or deferred taxes assumed from the seller or loans made by the seller to us and any building leases assumed from the seller. Each of these estimates requires a great deal of judgment and some of the estimates involve complex calculations. These allocation assessments have a direct impact on our results of operations. For example, if we were to allocate more value to land, there would be no depreciation with respect to such amount. If we were to allocate more value to the property as opposed to allocating to the value of in-place tenant leases, this amount would be recognized as an expense over a much longer period of time. This potential effect occurs because the amounts allocated to property are depreciated over the estimated lives of the property whereas amounts allocated to in-place tenant leases are amortized over the estimated term (including renewal and extension assumptions) of the leases. Additionally, the amortization of the value (or negative value) assigned to above (or below) market rate leases is recorded as an adjustment to rental revenue as compared to amortization of the value of in-place tenant leases and tenant relationships, which is included in depreciation and amortization in our consolidated statements of operations.

Capitalization of costs. Direct and indirect project costs that are clearly associated with the development and redevelopment of properties are capitalized as incurred. Project costs include all costs directly associated with the development or redevelopment of a property, including construction costs, interest, property taxes, insurance, legal fees and costs of personnel working on the project. Indirect costs that do not clearly relate to the projects under development/redevelopment are not capitalized and are charged to expense as incurred.

Capitalization of costs begins when activities, including development of plans, process of obtaining permits from governmental authorities and physical construction, that are necessary to get the asset ready for its intended use are in progress and costs have been incurred. Capitalization of costs ceases when the development/redevelopment project is substantially complete and ready for its intended use. Determining when a development/redevelopment project commences, and when it is substantially complete and ready for its intended use involves a degree of judgment. We generally consider a development/redevelopment project to be substantially complete and ready for its intended use upon commissioning, which is when the redeveloped/developed project has been tested at full load, or receipt of a certificate of occupancy. We cease cost capitalization if activities necessary for the development / redevelopment of the property have been suspended. Capitalized costs are allocated to the specific components of a project that are benefited.

Useful lives of assets. We are required to make subjective assessments as to the useful lives of our properties for purposes of determining the amount of depreciation to record on an annual basis with respect to our investments in real estate. These assessments have a direct impact on our net income because if we were to shorten the expected useful lives of our investments in real estate we would depreciate such investments over fewer years, resulting in more depreciation expense and lower net income on an annual basis.

Asset impairment evaluation. We review each of our properties for indicators that its carrying amount may not be recoverable. Examples of such indicators may include a significant decrease in the market price of the property, a significant adverse change in the extent or manner in which the property is being used in its physical condition or expected to be used based on the underwriting at the time of acquisition, an accumulation of costs significantly in excess of the amount originally expected for the acquisition or development of the property, or a history of operating or cash flow losses of the property. When such impairment indictors exist, we review an estimate of the future undiscounted net cash flows (excluding interest charges) expected to result from the real estate investment’s use and eventual disposition and compare that estimate to the carrying value of the property. We consider factors such as future operating income, trends and prospects, as well as the effects of leasing demand, competition and other factors. If our future undiscounted net cash flow evaluation indicates that we are unable to recover the carrying value of a real estate investment, an impairment loss is recorded to the extent that the carrying value exceeds the estimated fair value of the property. These losses have a direct impact on our net income because recording an impairment loss results in an immediate negative adjustment to net income. The evaluation of anticipated cash flows is highly subjective and is based in part on assumptions regarding future occupancy, rental rates and capital requirements that could differ materially from actual results in future periods. Since cash flows on properties considered to be long-lived assets to be held and used are considered on an undiscounted basis to determine whether the carrying value of a

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property is recoverable, our strategy of holding properties over the long-term directly decreases the likelihood of their carrying values not being recoverable and therefore requiring the recording of an impairment loss. If our strategy changes or market conditions otherwise dictate an earlier sale date, an impairment loss may be recognized and such loss could be material. If we determine that the asset fails the recoverability test, the affected assets must be reduced to their fair value. No such impairment losses have been recognized to date.

We generally estimate the fair value of rental properties utilizing a discounted cash flow analysis that includes projections of future revenues, expenses and capital improvement costs that a market participant would use based on the highest and best use of the asset, which is similar to the income approach that is commonly utilized by appraisers.

Revenue Recognition

Rental income is recognized using the straight-line method over the terms of the tenant leases. Deferred rents included in our condensed consolidated balance sheets represent the aggregate excess of rental revenue recognized on a straight-line basis over the contractual rental payments under the terms of the leases. Many of our leases contain provisions under which the tenants reimburse us for a portion of property operating expenses and real estate taxes incurred by us. However, we generally are not entitled to reimbursement of property operating expenses, other than utility expense, and real estate taxes under our leases for Turn-Key Flex^SM facilities. Such reimbursements are recognized in the period that the expenses are incurred. Lease termination fees are recognized over the remaining term of the lease, effective as of the date the lease modification is finalized, assuming collection is not considered doubtful. As discussed above, we recognize amortization of the value of acquired above or below market tenant leases as a reduction of rental income in the case of above market leases or an increase to rental revenue in the case of below market leases.

We must make subjective estimates as to when our revenue is earned and the collectability of our accounts receivable related to minimum rent, deferred rent, expense reimbursements, lease termination fees and other income. We specifically analyze accounts receivable and historical bad debts, tenant concentrations, tenant creditworthiness and current economic trends when evaluating the adequacy of the allowance for bad debts. These estimates have a direct impact on our net income because a higher bad debt allowance would result in lower net income, and recognizing rental revenue as earned in one period versus another would result in higher or lower net income for a particular period.

Share-based Awards

We recognize compensation expense related to share-based awards. We generally amortize this compensation expense over the vesting period of the award. The calculation of the fair value of share-based awards is subjective and requires several assumptions over such items as expected stock volatility, dividend payments and future company results. These assumptions have a direct impact on our net income because a higher share-based awards amount would result in lower net income for a particular period.

Results of Operations

The discussion below relates to our financial condition and results of operations for the three and nine months ended September 30, 2012 and 2011. A summary of our operating results for the three and nine months ended September 30, 2012 and 2011 is as follows (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Income Statement Data:
Total operating revenues	$	342,479		$	273,476		$	929,331		$	792,098
Total operating expenses		(245,404	)		(201,850	)		(657,891	)		(569,087	)
Operating income		97,075			71,626			271,440			223,011
Other expenses, net		(40,154	)		(33,937	)		(111,288	)		(108,082	)
Net income	$	56,921		$	37,689		$	160,152		$	114,929

Our property portfolio has experienced consistent and significant growth since the first property acquisition in January 2002. As a result of this growth, our period-to-period comparison of our financial performance focuses on the impact on our revenues and expenses resulting both from the new property additions to our portfolio, as well as on a “same store” property basis (same store properties are properties that were owned and operated for the entire current period and the entire immediate preceding year). The following table identifies each of the properties in our portfolio acquired from January 1, 2011 through September 30, 2012.

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Acquired Buildings			Acquisition Date		Redevelopment Space as of September 30, 2012 (1)		Net Rentable Square Feet Excluding Redevelopment Space (2)		Square Feet Including Redevelopment Space		Occupancy Rate as of September 30, 2012 (3)
As of December 31, 2010 (96 properties)						1,858,033		15,411,074		17,269,107		93.4	%
January 1, 2011 through September 30, 2012
43830 Devin Shafron Drive	(4	)		Mar-11		14,048		99,202		113,250		84.3
43790 Devin Shafron Drive	(4	)		Jun-11		—		152,138		152,138		100.0
Fountain Court				Jul-11		112,691		19,080		131,771		37.6
3825 NW Aloclek Place	(5	)		Aug-11		—		28,742		28,742		100.0
11085 Sun Center Drive				Sep-11		—		69,048		69,048		100.0
21551 Beaumeade Circle	(6	)		Dec-11		—		152,504		152,504		100.0
1506 Moran Road				Dec-11		—		13,626		13,626		100.0
760 Doug Davis Drive				Dec-11		—		334,306		334,306		100.0
360 Spear Street				Dec-11		—		154,950		154,950		100.0
Convergence Business Park				Feb-12		—		819,243		819,243		98.5
9333, 9355, 9377 Grand Avenue				May-12		117,515		457,429		574,944		100.0
8025 North Interstate 35				May-12		—		62,237		62,237		100.0
400 S. Akard Street				Jun-12		—		269,563		269,563		94.7
Unit B Prologis Park				Jul-12		—		120,000		120,000		100.0
The Chess Building				Jul-12		—		133,000		133,000		97.6
Unit 21 Goldworth Park Trading Estate				Jul-12		139,917		340,083		480,000		98.9
11900 East Cornell Avenue				Sep-12		—		285,840		285,840		94.3
Subtotal						384,171		3,510,991		3,895,162		97.8	%
Total						2,242,204		18,922,065		21,164,269		94.2	%

(1) Redevelopment space requires significant capital investment in order to develop datacenter facilities that are ready for use. Most often this is shell space. However, in certain circumstances this may include partially built datacenter space that was not completed by previous ownership and requires a large capital investment in order to build out the space.

(2) Net rentable square feet at a building represents the current square feet at that building under lease as specified in the lease agreements plus management’s estimate of space available for lease based on engineering drawings. Net rentable square feet includes tenants’ proportional share of common areas but excludes space held for redevelopment.

(3) Occupancy rates exclude redevelopment space. For some of our properties, we calculate occupancy based on factors in addition to contractually leased square feet, including available power, required support space and common area.

(4) Includes two developed buildings (43830 Devin Shafron Drive and 43790 Devin Shafron Drive) placed into service in 2011 that are being included with a property (Devin Shafron buildings) that was acquired in 2007.

(5) Includes a developed building (3825 NW Aloclek Place) placed into service and included in our property count in 2012 that was acquired in 2011.

(6) Includes a developed building (21551 Beaumeade Circle) placed into service in 2011 that is being included with a property (21561 & 21571 Beaumeade Circle) that was acquired in 2009.

In May 2008, we acquired 701 & 717 Leonard Street, a parking garage in Dallas, Texas; however, we exclude the acquisition from our property count because it is located adjacent to our internet gateway datacenter located at 2323 Bryan Street and is not considered a separate property.

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Comparison of the Three Months Ended September 30, 2012 to the Three Months Ended September 30, 2011 and the Nine Months Ended September 30, 2012 to the Nine Months Ended September 30, 2011

Portfolio

As of September 30, 2012, our portfolio consisted of 110 properties, excluding three properties held as investments in unconsolidated joint ventures, with an aggregate of 21.2 million net rentable square feet including 2.2 million square feet held for redevelopment compared to a portfolio consisting of 98 properties, excluding two properties held as investments in unconsolidated joint ventures, with an aggregate of 17.4 million net rentable square feet including 2.1 million square feet held for redevelopment as of September 30, 2011. The increase in our portfolio reflects the acquisition of twelve properties in the twelve months ended September 30, 2012.

Operating Revenues

Total operating revenues for the three and nine months ended September 30, 2012 and 2011 were as follows (in thousands):

	Three Months Ended September 30,							Nine Months Ended September 30,
	2012		2011		Change			2012		2011		Change
Rental	$	260,052	$	206,846	$	53,206		$	717,809	$	606,447	$	111,362
Tenant reimbursements		78,878		56,656		22,222			197,162		159,801		37,361
Construction management fee		2,497		9,372		(6,875	)		6,903		24,948		(18,045	)
Other		1,052		602		450			7,457		902		6,555
Total operating revenues	$	342,479	$	273,476	$	69,003		$	929,331	$	792,098	$	137,233

As shown by the same store and new properties table below, the increases in rental revenues and tenant reimbursement revenues for the three and nine month periods ended September 30, 2012 compared to the same periods in 2011 were due to new leasing at our same store properties, including completed and leased development and redevelopment space, and acquisitions of properties. Other revenues changes in the periods presented were primarily due to the timing of varying tenant termination revenues. We acquired twelve properties during the twelve months ended September 30, 2012.

The following tables show total operating revenues for same store properties and new properties (in thousands):

	Same Store						New Properties
	Three Months Ended September 30,						Three Months Ended September 30,
	2012		2011		Change		2012		2011		Change
Rental	$	227,587	$	206,634	$	20,953	$	32,465	$	212	$	32,253
Tenant reimbursements		63,847		56,656		7,191		15,031		—		15,031
Construction management fee		—		—		—		2,497		9,372		(6,875	)
Other		1,052		602		450		—		—		—
Total operating revenues	$	292,486	$	263,892	$	28,594	$	49,993	$	9,584	$	40,409
	Same Store						New Properties
	Nine Months Ended September 30,						Nine Months Ended September 30,
	2012		2011		Change		2012		2011		Change
Rental	$	668,452	$	606,235	$	62,217	$	49,357	$	212	$	49,145
Tenant reimbursements		175,959		159,801		16,158		21,203		—		21,203
Construction management fee		—		—		—		6,903		24,948		(18,045	)
Other		7,457		902		6,555		—		—		—
Total operating revenues	$	851,868	$	766,938	$	84,930	$	77,463	$	25,160	$	52,303

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Same store rental revenues increased for the three and nine months ended September 30, 2012 compared to the same periods in 2011 primarily as a result of new leases at our properties during the twelve months ended September 30, 2012 due to strong demand for datacenter space, including leases of completed development and redevelopment space, the largest of which was for space in 29A International Business Park, 4849 Alpha Road, 4030-4050 Lafayette and Cateringweg 5. Rental revenue included amounts earned from leases with The tel(x) Group, Inc., or tel(x), which was sold to an unrelated third party in 2011, of approximately $12.0 million and $11.4 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $33.7 million and $30.9 million for the nine months ended September 30, 2012 and 2011, respectively. Same store tenant reimbursement revenues increased for the three and nine months ended September 30, 2012 as compared to the same periods in 2011 primarily as a result of new leasing and higher utility and operating expenses being billed to our tenants, the largest occurrences of which were at 29A International Business Park, Paul van Vlissingenstraat 16 and 1100 Space Park Drive.

New properties revenue increases were caused by properties acquired during the period from January 1, 2011 to September 30, 2012. For the three and nine months ended September 30, 2012, the Sentrum Portfolio, Convergence Business Park and 760 Doug Davis Drive contributed $37.6 million, or approximately 80%, and $52.5 million, or approximately 75%, respectively, of the new properties increase in rental revenues and tenant reimbursements compared to the same periods in 2011.

Operating Expenses and Interest Expense

Operating expenses and interest expense during the three and nine months ended September 30, 2012 and 2011 were as follows (in thousands):

	Three Months Ended September 30,							Nine Months Ended September 30,
	2012		2011		Change			2012		2011		Change
Rental property operating and maintenance	$	106,660	$	82,164	$	24,496		$	274,081	$	226,224	$	47,857
Property taxes		17,982		13,055		4,927			49,793		40,488		9,305
Insurance		2,463		1,961		502			6,953		6,010		943
Construction management		623		7,391		(6,768	)		1,412		20,327		(18,915	)
Depreciation and amortization		101,840		79,047		22,793			274,835		229,813		45,022
General and administrative		14,409		14,600		(191	)		43,768		41,082		2,686
Transactions		504		3,632		(3,128	)		5,789		5,053		736
Other		923		—		923			1,260		90		1,170
Total operating expenses	$	245,404	$	201,850	$	43,554		$	657,891	$	569,087	$	88,804
Interest expense	$	41,047	$	37,078	$	3,969		$	116,758	$	112,494	$	4,264

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As shown in the same store and new properties table below, total expenses for the three and nine months ended September 30, 2012 increased compared to the same periods in 2011 primarily as a result of higher utility rates in several of our properties along with redevelopment projects being placed into service leading to higher utility expense in 2012. The following table shows expenses for same store properties and new properties (in thousands):

	Same Store							New Properties
	Three Months Ended September 30,							Three Months Ended September 30,
	2012		2011		Change			2012		2011			Change
Rental property operating and maintenance	$	91,973	$	82,037	$	9,936		$	14,687	$	127		$	14,560
Property taxes		15,988		13,006		2,982			1,994		49			1,945
Insurance		2,069		1,917		152			394		44			350
Construction management		—		—		—			623		7,391			(6,768	)
Depreciation and amortization		86,588		79,038		7,550			15,252		9			15,243
General and administrative (1)		14,409		14,600		(191	)		—		—			—
Transactions		—		—		—			504		3,632			(3,128	)
Other		923		—		923			—		—			—
Total operating expenses	$	211,950	$	190,598	$	21,352		$	33,454	$	11,252		$	22,202
Interest expense (2)	$	37,299	$	37,075	$	224		$	3,748	$	3		$	3,745
	Same Store							New Properties
	Nine Months Ended September 30,							Nine Months Ended September 30,
	2012		2011		Change			2012		2011			Change
Rental property operating and maintenance	$	252,462	$	226,303	$	26,159		$	21,619	$	(79	)	$	21,698
Property taxes		46,175		40,400		5,775			3,618		88			3,530
Insurance		6,296		5,771		525			657		239			418
Construction management		—		—		—			1,412		20,327			(18,915	)
Depreciation and amortization		251,969		229,804		22,165			22,866		9			22,857
General and administrative (1)		43,768		41,082		2,686			—		—			—
Transactions		—		—		—			5,789		5,053			736
Other		1,260		90		1,170			—		—			—
Total operating expenses	$	601,930	$	543,450	$	58,480		$	55,961	$	25,637		$	30,324
Interest expense (2)	$	110,500	$	112,491	$	(1,991	)	$	6,258	$	3		$	6,255

(1) General and administrative expenses are included in same store as they are not allocable to specific properties.

(2) Interest expense on our global revolving credit facility and unsecured term loan are allocated on a specific property basis.

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Same store rental property operating and maintenance expenses increased in the three and nine months ended September 30, 2012 compared to the same periods in 2011 primarily as a result of higher consumption and utility rates in several of our properties along with redevelopment projects being placed into service leading to higher utility expense in 2012. During the three months ended September 30, 2012 and 2011, we capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $8.0 million and $6.5 million, respectively, and $23.3 million and $18.8 million during the nine months ended September 30, 2012 and 2011, respectively.

Same store depreciation and amortization expense increased in the three and nine months ended September 30, 2012 compared to the same periods in 2011, principally because of depreciation of redevelopment and development projects that were placed into service in the final three months of 2011 and during 2012.

General and administrative expenses for the nine months ended September 30, 2012 increased compared to the same period in 2011 primarily due to the growth of our company, which resulted in more employees, additional incentive compensation, and higher professional fees and marketing expenses.

Same store interest expense decreased for the nine months ended September 30, 2012 as compared to the same periods in 2011 primarily as a result of lower average outstanding mortgage debt balances during 2012 compared to 2011 primarily due to the paydown of the following loans: 114 Rue Ambroise Croizat (January 2012), Unit 9, Blanchardstown Corporate Park (January 2012), 1201 Comstock Street (April 2012), 2805 Lafayette Street (May 2012), 2805 Lafayette Street Mezzanine (May 2012) and 1350 Duane Avenue/3080 Raymond Street (September 2012). This decrease was partially offset by the issuance of our 5.250% Notes due 2021 (2021 Notes) in March 2011. During the three months ended September 30, 2012 and 2011, we capitalized interest of approximately $4.5 million and $4.8 million, respectively, and $13.6 million and $13.6 million during the nine months ended September 30, 2012 and 2011, respectively.

New properties increases were caused by properties acquired during the period from January 1, 2011 to September 30, 2012. For the three and nine months ended September 30, 2012, the Sentrum Portfolio, Convergence Business Park and 760 Doug Davis Drive contributed $27.6 million, or approximately 95%, and $38.8 million, or approximately 79%, of the total new properties increase in total operating expenses (excluding construction management) compared to the same periods in 2011.

Liquidity and Capital Resources of the Parent Company

In this “Liquidity and Capital Resources of the Parent Company” section and in the “Liquidity and Capital Resources of the Operating Partnership” section below, the term, our “parent company”, refers to Digital Realty Trust, Inc. on an unconsolidated basis, excluding our operating partnership.

Analysis of Liquidity and Capital Resources

Our parent company’s business is operated primarily through our operating partnership of which our parent company is the sole general partner and which it consolidates for financial reporting purposes. Because our parent company operates on a consolidated basis with our operating partnership, the section entitled “Liquidity and Capital Resources of the Operating Partnership” should be read in conjunction with this section to understand the liquidity and capital resources of our parent company on a consolidated basis and how our company is operated as a whole.

Our parent company issues public equity from time to time, but does not otherwise generate any capital itself or conduct any business itself, other than incurring certain expenses in operating as a public company which are fully reimbursed by the operating partnership. Our parent company itself does not hold any indebtedness other than guarantees of the indebtedness of our operating partnership and certain of its subsidiaries, and its only material asset is its ownership of partnership interests of our operating partnership. Therefore, the consolidated assets and liabilities and the consolidated revenues and expenses of our parent company and our operating partnership are the same on their respective financial statements, except for immaterial differences related to cash, other assets and accrued liabilities that arise from public company expenses paid by our parent company. However, all debt is held directly or indirectly at the operating partnership level. Our parent company’s principal funding requirement is the payment of dividends on its common and preferred shares. Our parent company’s principal source of funding for its dividend payments is distributions it receives from our operating partnership.

As the sole general partner of our operating partnership, our parent company has the full, exclusive and complete responsibility for our operating partnership’s day-to-day management and control. Our parent company causes our operating partnership to distribute such portion of its available cash as our parent company may in its discretion determine, in the manner provided in our operating partnership’s partnership agreement. Our parent company receives proceeds from its equity issuances from time to time, but is generally required by our operating partnership’s partnership agreement to contribute the proceeds from its equity issuances to our operating partnership in exchange for partnership units of our operating partnership.

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Our parent company is a well-known seasoned issuer with an effective shelf registration statement filed on April 23, 2012 that allows our parent company to register unspecified various classes of equity securities. As circumstances warrant, our parent company may issue equity from time to time on an opportunistic basis, dependent upon market conditions and available pricing. Any proceeds from such equity issuances would be generally contributed to our operating partnership in exchange for additional equity interests in our operating partnership. Our operating partnership may use the proceeds to acquire additional properties, to fund development and redevelopment opportunities and for general working capital purposes, including potentially for the repurchase, redemption or retirement of outstanding debt or preferred securities.

The liquidity of our parent company is dependent on our operating partnership’s ability to make sufficient distributions to our parent company. The primary cash requirement of our parent company is its payment of dividends to its stockholders. Our parent company also guarantees our operating partnership’s, as well as certain of its subsidiaries’, unsecured debt. If our operating partnership fails to fulfill its debt requirements, which trigger parent company guarantee obligations, then our parent company will be required to fulfill its cash payment commitments under such guarantees. However, our parent company’s only asset is its investment in our operating partnership.

We believe our operating partnership’s sources of working capital, specifically its cash flow from operations, and funds available under its global revolving credit facility are adequate for it to make its distribution payments to our parent company and, in turn, for our parent company to make its dividend payments to its stockholders. However, we cannot assure you that our operating partnership’s sources of capital will continue to be available at all or in amounts sufficient to meet its needs, including its ability to make distribution payments to our parent company. The lack of availability of capital could adversely affect our operating partnership’s ability to pay its distributions to our parent company, which would in turn, adversely affect our parent company’s ability to pay cash dividends to its stockholders.

On June 29, 2011, our parent company commenced a new At-the-Market equity distribution program under which it can issue and sell up to $400.0 million of its common stock through, at its discretion, any of Merrill Lynch, Pierce Fenner & Smith Incorporated, Citigroup Global Markets Inc., Credit Suisse Securities (USA) LLC, Deutsche Bank Securities Inc. and Morgan Stanley & Co. LLC as its sales agents. For the nine months ended September 30, 2012, our parent company generated net proceeds of approximately $62.7 million from the issuance of approximately 1.0 million shares of common stock under the program at an average price of $66.19 per share after payment of approximately $0.6 million of commissions to the sales agents. No sales were made under the program during the three months ended September 30, 2012. The proceeds from the issuances were contributed to our operating partnership in exchange for the issuance of approximately 1.0 million common units to our parent company. Our parent company has used and intends to use the net proceeds from the program to temporarily repay borrowings under our operating partnership’s global revolving credit facility, to acquire additional properties, to fund development and redevelopment opportunities and for general working capital purposes, including potentially for the repurchase, redemption or retirement of outstanding debt or preferred equity securities. The sales of common stock under the equity distribution program will be made in “at the market” offerings as defined in Rule 415 of the Securities Act.

On April 5, 2012 and April 18, 2012, our parent company issued an aggregate of 7.3 million shares of 6.625% series F cumulative redeemable preferred stock for total net proceeds, after underwriting discounts and offering expenses, of $176.2 million, including the proceeds from the exercise of a portion of the underwriters’ over-allotment option. Our parent company used the net proceeds from the offering to temporarily repay borrowings under our operating partnership’s global revolving credit facility, to acquire additional properties, to fund development and redevelopment opportunities and for general working capital purposes including potentially for the repurchase, redemption or retirement of outstanding debt or preferred equity securities.

On July 2, 2012, our parent company completed an offering of 11.5 million shares of its common stock for total net proceeds, after deducting discounts and estimated expenses, of approximately $797.2 million. Our parent company contributed the net proceeds from this offering to our operating partnership in exchange for 11.5 million common units, as required by our operating partnership’s partnership agreement, and our operating partnership used the net proceeds to fund a portion of the purchase price for the acquisition of the Sentrum Portfolio (defined below) and to temporarily repay borrowings under our operating partnership’s global revolving credit facility.

Future Uses of Cash

Our parent company may from time to time seek to retire, redeem or repurchase its preferred equity or the debt securities of our operating partnership through cash purchases and/or exchanges for equity securities in open market purchases, privately negotiated transactions or otherwise. Such repurchases, redemptions or exchanges, if any, will depend on prevailing market conditions, our liquidity requirements, contractual restrictions or other factors. The amounts involved may be material.

We are also subject to the commitments discussed below under “Dividends and Distributions.”

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Dividends and Distributions

Our parent company is required to distribute 90% of its taxable income (excluding capital gains) on an annual basis in order for it to continue to qualify as a REIT for federal income tax purposes. Accordingly, our parent company intends to make, but is not contractually bound to make, regular quarterly distributions to its common stockholders from cash flow from our operating partnership’s operating activities. While historically our parent company has satisfied this distribution requirement by making cash distributions to its stockholders, it may choose to satisfy this requirement by making distributions of cash or other property. All such distributions are at the discretion of our parent company’s board of directors. Our parent company considers market factors and our operating partnership’s performance in addition to REIT requirements in determining distribution levels. Our parent company has distributed 100% of its taxable income since inception to minimize corporate level federal income taxes. Amounts accumulated for distribution to stockholders are invested primarily in interest-bearing accounts and short-term interest-bearing securities, which are consistent with our intention to maintain our parent company’s status as a REIT. The exchange rate on the operating partnership’s 5.50% exchangeable senior debentures due 2029 (2029 Debentures) and the conversion rate on our parent company’s series D cumulative convertible preferred stock are each subject to adjustment for certain events, including, but not limited to, certain dividends on our parent company’s common stock in excess of $0.33 per share per quarter and $0.31 per share per quarter, respectively. Therefore, the declaration and payment of quarterly dividends by our parent company in excess of these thresholds may increase the dilutive impact of our operating partnership’s exchangeable debentures and our parent company’s convertible preferred stock on our parent company’s common stockholders.

As a result of this distribution requirement, our operating partnership cannot rely on retained earnings to fund its on-going operations to the same extent that other companies whose parent companies are not REITs can. Our parent company may need to continue to raise capital in the equity markets to fund our operating partnership’s working capital needs, as well as potential developments at new or existing properties, acquisitions or investments in existing or newly created joint ventures. In addition, our parent company may be required to use borrowings under our operating partnership’s global revolving credit facility, if necessary, to meet REIT distribution requirements and maintain our parent company’s REIT status.

Our parent company has declared and paid the following dividends on its common and preferred stock for the nine months ended September 30, 2012 (in thousands):

Date dividend declared	Dividend payable date		Series C Preferred Stock (1)(6)		Series D Preferred Stock (2)		Series E Preferred Stock (3)		Series F Preferred Stock (4)			Common Stock (5)
February 14, 2012		Mar. 30, 2012	$	1,402	$	2,398	$	5,031	$	—		$	78,335
April 23, 2012		June 29, 2012		—		2,394		5,031		2,888	(7)		80,478
July 19, 2012		Sept. 28, 2012		—		1,723		5,031		3,023			89,679
			$	1,402	$	6,515	$	15,093	$	5,911		$	248,492

(1) $1.094 annual rate of dividend per share.

(2) $1.375 annual rate of dividend per share.

(3) $1.750 annual rate of dividend per share.

(4) $1.656 annual rate of dividend per share.

(5) $2.920 annual rate of dividend per share.

(6) Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% Series C Cumulative Convertible Preferred Stock (“Series C Preferred Stock”) into shares of its of common stock in accordance with the terms of the Series C Preferred Stock. Each share of Series C Preferred Stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.

(7) Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

Distributions out of our current or accumulated earnings and profits are generally classified as ordinary income whereas distributions in excess of our current and accumulated earnings and profits, to the extent of a stockholder’s U.S. federal income tax basis in our parent company’s stock, are generally classified as a return of capital. Distributions in excess of a stockholder’s U.S. federal income tax basis in our parent company’s stock are generally characterized as capital gain.

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Liquidity and Capital Resources of the Operating Partnership

In this “Liquidity and Capital Resources of the Operating Partnership” section, the terms “we”, “our” and “us” refer to our operating partnership together with its consolidated subsidiaries or our operating partnership and our parent company together with their consolidated subsidiaries, as the context requires.

Analysis of Liquidity and Capital Resources

Our parent company is our sole general partner and consolidates our results of operations for financial reporting purposes. Because we operate on a consolidated basis with our parent company, the section entitled “Liquidity and Capital Resources of the Parent Company” should be read in conjunction with this section to understand our liquidity and capital resources on a consolidated basis.

As of September 30, 2012, we had $76.1 million of cash and cash equivalents, excluding $43.2 million of restricted cash. Restricted cash primarily consists of interest-bearing cash deposits required by the terms of several of our mortgage loans for a variety of purposes, including real estate taxes, insurance, anticipated or contractually obligated tenant improvements, as well as capital expenditures.

Our short-term liquidity requirements primarily consist of operating expenses, development and redevelopment costs and other expenditures associated with our properties, distributions to our parent company in order for it to make dividend payments on its preferred stock, distributions to our parent company in order for it to make dividend payments to its stockholders required to maintain its REIT status, distributions to the unitholders in our operating partnership, capital expenditures, debt service on our loans and, potentially, acquisitions. We expect to meet our short-term liquidity requirements through net cash provided by operations, restricted cash accounts established for certain future payments and by drawing upon our global revolving credit facility.

On November 3, 2011, the operating partnership replaced its corporate and Asia Pacific revolving credit facilities with an expanded revolving credit facility, which we refer to as the global revolving credit facility, increasing its total capacity to $1.5 billion from $850 million. The global revolving credit facility has an accordion feature that would enable us to increase the borrowing capacity of the credit facility to $2.25 billion, subject to the receipt of lender commitments. On August 10, 2012, we increased the aggregate commitments under our global revolving credit facility from $1.5 billion to $1.8 billion, pursuant to a partial exercise of the accordion feature. The renewed facility matures in November 2015, with a one-year extension option. The interest rate for borrowings under the expanded facility equals the applicable index plus a margin which is based on the credit rating of our long-term debt and is currently 125 basis points. An annual facility fee on the unused portion of the facility, based on the credit rating of our long-term debt and currently 25 basis points, is payable quarterly. Funds may be drawn in U.S., Canadian, Singapore, Australian and Hong Kong dollars, as well as Euro, Pound Sterling, Swiss Franc and Japanese yen denominations. As of September 30, 2012, borrowings under the global revolving credit facility bore interest at a blended rate of 1.79% (GBP), 1.56% (Singapore Dollars), 4.83% (Australian Dollars) and 1.55% (Hong Kong Dollars), which are based on 1-month GBP LIBOR, 1-month SIBOR, 1-month BBR and 1-month HIBOR, respectively, plus a margin of 1.25%. We have used and intend to use available borrowings under the global revolving credit facility to acquire additional properties, fund development and redevelopment opportunities and to provide for working capital and other corporate purposes, including potentially for the repurchase, redemption or retirement of outstanding debt or preferred equity securities. We capitalized approximately $11.2 million of financing costs related to the global revolving credit facility. As of September 30, 2012, approximately $526.4 million was drawn under this facility and $22.4 million of letters of credit were issued, leaving approximately $1.3 billion available for use.

On April 17, 2012, we closed a new $750.0 million senior unsecured multi-currency term loan facility. The new facility matures on April 16, 2017. Interest rates are based on our senior unsecured debt ratings and are currently 145 basis points over the applicable index for floating rate advances. Funds have been drawn in U.S, Singapore and Australian dollars, as well as Euro and Pound Sterling denominations with the option to add Hong Kong dollars and Yen upon an accordion exercise. The new term loan provides funds for acquisitions, repayment of indebtedness, development and redevelopment, working capital and general corporate purposes. Covenants are consistent with our global revolving credit facility.

For a discussion of the potential impact of current global economic and market conditions on our liquidity and capital resources, see “—Factors Which May Influence Future Results of Operations—Global market and economic conditions” above.

On June 29, 2011, our parent company commenced its new At-the-Market equity distribution program discussed under “Liquidity and Capital Resources of the Parent Company” above. For the nine months ended September 30, 2012, our parent company generated net proceeds of approximately $62.7 million from the issuance of approximately 1.0 million shares of common stock under the program at an average price of $66.19 per share after payment of approximately $0.6 million of commissions to the sales agents. The proceeds from the issuances were contributed to us in exchange for the issuance of approximately 1.0 million common units to our parent company. No sales were made under the program during the three months ended September 30, 2012.

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On April 5, 2012 and April 18, 2012, our parent company issued an aggregate of 7.3 million shares of 6.625% series F cumulative redeemable preferred stock discussed under “Liquidity and Capital Resources of the Parent Company” above, for total net proceeds, after underwriting discounts and offering expenses, of $176.2 million, including the proceeds from the exercise of a portion of the underwriters’ over-allotment option. The proceeds from the offering were contributed to us in exchange for the issuance of 7.3 million 6.625% series F cumulative redeemable preferred units to our parent company.

On July 2, 2012, our parent company completed an offering of 11.5 million shares of its common stock for total net proceeds, after deducting discounts and estimated expenses, of approximately $797.2 million. Our parent company contributed the net proceeds from this offering to us in exchange for 11.5 million common units, as required by our partnership agreement, and we used the net proceeds to fund a portion of the purchase price for the acquisition of the Sentrum Portfolio (defined below) and to temporarily repay borrowings under our global revolving credit facility.

In March 2012, we entered into a joint venture with Savvis, Inc., a CenturyLink company. On June 26, 2012, this unconsolidated joint venture acquired a 164,000 square foot property in Hong Kong. The property is located at Tseung Kwan O Industrial Estate in New Territories, approximately 12 miles from downtown Hong Kong. As of September 30, 2012, we have contributed approximately $20.6 million to the joint venture.

On February 22, 2012, we completed the acquisition of Convergence Business Park in Lewisville, Texas for a purchase price of approximately $123.0 million. The property consists of nine income producing buildings along with undeveloped land. The acquisition was funded with borrowings under our global revolving credit facility.

On May 10, 2012, we completed the acquisition of 9333, 9355, 9377 Grand Avenue, an approximately 575,000 square foot redevelopment property located in suburban Chicago for a purchase price of approximately $22.3 million. The acquisition was funded with borrowings under our global revolving credit facility.

On May 18, 2012, we completed the acquisition of 8025 N. Interstate 35, a data center facility located in Austin, Texas, totaling approximately 62,000 square feet for a purchase price of $12.5 million. In connection with the acquisition, we assumed a $6.7 million secured mortgage loan on the facility. The acquisition was funded with borrowings under our global revolving credit facility.

On June 13, 2012, we completed the acquisition of 400 S. Akard Street, a data center facility located in Dallas, Texas, totaling approximately 269,600 square feet for a purchase price of approximately $75.0 million. The acquisition was funded with borrowings under our global revolving credit facility.

On July 11, 2012, we completed the acquisition of a three-property data center portfolio, totaling approximately 733,000 square feet, located in the greater London area, referred to as the Sentrum Portfolio. The purchase price was £734.6 million (equivalent to approximately $1.1 billion based on the July 11, 2012 exchange rate of £1.00 to $1.55), which includes an £18.7 million (equivalent to approximately $29.0 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) adjustment in the purchase price to reflect amounts associated with the early repayment of property debt. In addition, non-cash consideration of £56.5 million (or $87.6 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) was recorded as the expected fair value of contingent consideration as required by prevailing accounting guidance. There was also a non-cash purchase adjustment related to deferred taxes, which amounted to £68.6 million (or $106.3 million based on the July 11, 2012 exchange rate of £1.00 to $1.55). The purchase price was paid in cash funded with proceeds from our parent company’s common stock offering in July 2012 along with borrowings under our global revolving credit facility.

On September 14, 2012, we completed the acquisition of a 286,000 square foot data center and office complex located in Aurora, Colorado for a purchase price of approximately $90.8 million. The acquisition was funded with cash on hand and borrowings under our global revolving credit facility.

The weighted average cash capitalization rate on income-producing properties acquired during the nine months ended September 30, 2012 is 7.5%. We calculate the cash capitalization rate on acquisitions by dividing anticipated annual net operating income by the purchase price (including assumed debt). Net operating income represents rental revenue and tenant reimbursement revenue from in place leases less rental property operating and maintenance expenses, property taxes and insurance expenses and is not a financial measure calculated in accordance with GAAP. Our calculation of the weighted average cash capitalization rate for acquisitions may change based on our experience operating the properties following the closing of the acquisitions.

On September 24, 2012, we closed the issuance of $300.0 million aggregate principal amount of the 2022 Notes. The purchase price paid by the initial purchasers was 98.684% of the principal amount thereof. The notes are our general unsecured senior obligations, rank equally in right of payment with all our other senior unsecured indebtedness and are fully and unconditionally guaranteed by our parent company. Interest on the notes is payable on April 1 and October 1 of each year, beginning on April 1, 2012. The net proceeds from the offering after deducting the original issue discount, underwriting commissions and estimated expenses was approximately $293.1 million. We used the net proceeds from the offering to temporarily repay borrowings under our global revolving credit facility.

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Construction

As of September 30, 2012 and December 31, 2011, work in progress, including the proportionate land and property costs related to current construction projects, amounted to $419.5 million, or $575.0 million including construction accruals and certain capitalized costs, and $345.0 million, or $448.4 million including construction accruals and certain capitalized costs, respectively. Separately, our redevelopment program included the proportionate land and building costs related to other targeted projects in the amount of $362.1 million and $122.0 million as of September 30, 2012 and December 31, 2011, respectively. Work in progress related to non-redevelopment projects, primarily tenant and building improvements, amounted to $15.3 million and $10.2 million as of September 30, 2012 and December 31, 2011, respectively.

Future Uses of Cash

Our properties require periodic investments of capital for tenant-related capital expenditures and for general capital improvements. As of September 30, 2012, we had approximately 2.2 million square feet of redevelopment space and we also owned approximately 388,000 net rentable square feet of datacenter space with extensive installed tenant improvements that we may subdivide for Turn-Key Flex^SM use during the next two years rather than lease to large single tenants. Turn-Key Flex^SM space is move-in-ready space for the placement of computer and network equipment required to provide a datacenter environment. Depending on demand for additional Turn-Key Flex^SM space, we expect to incur significant tenant improvement costs to build out and redevelop these types of spaces. At September 30, 2012, approximately 1,717,000 square feet of space was under construction for Turn-Key Flex^SM, Powered Base Building^® and Custom Solutions product, all of which are expected to be income producing on or after completion, in 12 U.S. domestic markets, one European market, two Australian markets and Singapore, consisting of approximately 1,026,000 square feet of development projects and 791,000 square feet of redevelopment projects. At September 30, 2012, we had commitments under construction contracts for approximately $187.3 million. We currently expect to incur approximately $250.0 million to $350.0 million of capital expenditures for our development and redevelopment programs during the three months ending December 31, 2012, although this amount may increase or decrease, potentially materially, based on numerous factors, including changes in demand, leasing results and availability of debt or equity capital.

Historical Capital Expenditures

	Nine Months Ended September 30,
	2012		2011
Development projects	$	229,040	$	66,593
Redevelopment projects		223,424		335,656
Other capital expenditures		105,090		58,017
Total capital expenditures (excluding indirect costs)	$	557,554	$	460,266

For the nine months ended September 30, 2012, total capital expenditures increased $97.3 million to $557.6 million from the nine months ended September 30, 2011. Our development capital expenditures for the nine months ended September 30, 2012 were approximately $229.0 million, which reflects an increase of approximately 244% from the same period in 2011. This increase was primarily due to increased spending for ground-up Custom Solutions projects, international Turn-Key Flex^SM and base building improvements. Our development capital expenditures are generally funded by our available cash and equity and debt capital. We also spent approximately $223.4 million in the nine months ended September 30, 2012 on redevelopment projects, which reflects a decrease of approximately 33% compared to the same period in 2011. This decrease was primarily due to a general decrease in the level of redevelopment construction activity in our U.S. and international markets. Our redevelopment capital expenditures are generally funded by our available cash and equity and debt capital. Other capital expenditures include capitalized replacement and other projects relating to the existing operating portfolio and increased in the nine months ended September 30, 2012 compared to the same period in 2011 primarily due to a general increase in the level of activity related to these projects.

Indirect costs, including capitalized interest, capitalized in the nine months ended September 30, 2012 and September 30, 2011 were $36.9 million and $32.4 million, respectively. Capitalized interest comprised approximately $13.6 million and $13.6 million, respectively, of the total indirect costs capitalized for the nine months ended September 30, 2012 and September 30, 2011. Capitalized interest in the nine months ended September 30, 2012 was unchanged compared to the same period in 2011 due to an increase in the amount of capital expenditures in the nine months ended September 30, 2012 as compared to the nine months ended September 30, 2011, offset by lower interest rates for the nine months ended September 30, 2012 compared to the same period in 2011. Excluding

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capitalized interest, the increase in indirect costs in the nine months ended September 30, 2012 compared to the same period in 2011 was primarily due to capitalized amounts relating to compensation expense of employees directly engaged in construction and leasing activities. See “—Future Uses of Cash” for a discussion of the amount of capital expenditures we expect to incur during the three months ending December 31, 2012.

We are also subject to the commitments discussed below under “Commitments and Contingencies,” “Off-Balance Sheet Arrangements” and “Distributions.”

Consistent with our growth strategy, we actively pursue opportunities for potential acquisitions, with due diligence and negotiations often at different stages at different times. The dollar value of acquisitions for the remainder of the year ending December 31, 2012 will be based on numerous factors, including tenant demand, leasing results, availability of debt or equity capital and acquisition opportunities.

We may from time to time seek to retire or repurchase our outstanding debt or the preferred equity of our parent company through cash purchases and/or exchanges for equity securities of our parent company in open market purchases, privately negotiated transactions or otherwise. Such repurchases or exchanges, if any, will depend on prevailing market conditions, our liquidity requirements, contractual restrictions or other factors. The amounts involved may be material.

We expect to meet our short- and long-term liquidity requirements, including to pay for scheduled debt maturities and to fund property acquisitions and non-recurring capital improvements, with net cash from operations, future long-term secured and unsecured indebtedness and the issuance of equity and debt securities and the proceeds of equity issuances by our parent company. We also may fund future short- and long-term liquidity requirements, including property acquisitions and non-recurring capital improvements using our global revolving credit facility pending permanent financing. If we are not able to obtain additional financing on terms attractive to us, or at all, including as a result of the circumstances described above under “Factors Which May Influence Future Results of Operations—Global market and economic conditions”, we may be required to reduce our acquisition or capital expenditure plans, which could have a material adverse effect upon our business and results of operations.

Distributions

All distributions on our units are at the discretion of our parent company’s board of directors. During the nine months ended September 30, 2012, our operating partnership declared and paid the following distributions (in thousands):

Date distribution declared	Distribution payable date		Series C Preferred Units (1)(6)		Series D Preferred Units (2)		Series E Preferred Units (3)		Series F Preferred Units (4)			Common Units (5)
February 14, 2012		Mar. 30, 2012	$	1,402	$	2,398	$	5,031	$	—		$	81,917
April 23, 2012		June 29, 2012		—		2,394		5,031		2,888	(7)		83,982
July 19, 2012		Sept. 28, 2012		—		1,723		5,031		3,023			93,076
			$	1,402	$	6,515	$	15,093	$	5,911		$	258,975

(1) $1.094 annual rate of distribution per unit.

(2) $1.375 annual rate of distribution per unit.

(3) $1.750 annual rate of distribution per unit.

(4) $1.656 annual rate of distribution per unit.

(5) $2.920 annual rate of distribution per unit.

(6) Effective April 17, 2012, in connection with the conversion of the series C preferred stock by our parent company, all outstanding 4.375% Series C Cumulative Convertible Preferred Units (“Series C Preferred Units”) were converted into common units in accordance with the terms of the Series C Preferred Units. Each Series C Preferred Unit was converted into 0.5480 common unit of the operating partnership.

(7) Represents a pro rata distribution from and including the original issue date to and including June 30, 2012.

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Commitments and Contingencies

We have agreed with the seller of 350 East Cermak Road to share a portion, not to exceed $135,000 per month, of rental revenue, adjusted for our costs to lease the premises, from the leases of the 192,000 square feet of space held for redevelopment. This revenue sharing agreement terminated in May 2012. We made payments of approximately $0.7 million and $1.2 million to the seller during the nine months ended September 30, 2012 and 2011, respectively.

As part of the acquisition of 29A International Business Park, the seller could earn additional consideration based on future net operating income growth in excess of certain performance targets, as defined. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to purchase would cause an amount to become probable of payment and therefore no amount is accrued as of September 30, 2012. The maximum amount that could be earned by the seller is $50.0 million SGD (or approximately $40.7 million based on the exchange rate as of September 30, 2012). The earnout contingency expires in November 2020.

One of the tenants at our Convergence Business Park property has an option to expand as part of their lease agreement, which expires in April 2017. As part of this option, development activities are not permitted on specifically identified expansion space within the property until April 2014. If the tenant elects to take this option, we can elect one of two options. The first option is to construct and develop an additional shell building on the expansion space. Concurrent with this obligation, the tenant would also execute an amendment to the existing lease to reflect the expansion of the space to include the additional shell building. The second option is to sell the existing building and the expansion space to the tenant for a price of approximately $24.0 million and $225,000 per square acre, respectively, plus additional adjustments as provided in the lease.

As part of the acquisition of the noncontrolling interest in the entity that owns 2805 Lafayette Street from our joint venture partner, the partner could earn additional consideration if between May 4, 2012 and January 31, 2013, we enter into a qualifying lease for this property, as defined in the agreement. As of September 30, 2012 no leases were executed for this property that would cause an amount to become probable of payment and therefore, no amount is accrued as of September 30, 2012.

As part of the acquisition of the Sentrum Portfolio, the seller could earn additional consideration based on future net returns on vacant space to be redeveloped, but not currently leased, as defined in the purchase agreement for the acquisition. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to purchase would cause an amount to become probable of payment. The expected fair value of the contingent consideration as of September 30, 2012 that could be earned by the seller is £56.5 million (or approximately $91.3 million based on the exchange rate as of September 30, 2012) and is currently accrued in accounts payable and other accrued expenses in the condensed consolidated balance sheet. The earnout contingency expires in July 2015. This amount will be reassessed on a quarterly basis.

As of September 30, 2012, we were a party to interest rate swap agreements which hedge variability in cash flows related to LIBOR, GBP LIBOR and EURIBOR based mortgage loans as well as the U.S. LIBOR and SGD-SOR based tranches of the unsecured term loan. Under these swaps, we pay variable-rate amounts in exchange for fixed-rate payments over the life of the agreements without exchange of the underlying principal amounts. See Item 3 “Quantitative and Qualitative Disclosures about Market Risk.”

Outstanding Consolidated Indebtedness

The table below summarizes our debt, as of September 30, 2012 (in millions):

Debt Summary:
Fixed rate	$	2,660.2
Variable rate debt subject to interest rate swaps		703.9
Total fixed rate debt (including interest rate swaps)		3,364.1
Variable rate—unhedged		716.0
Total	$	4,080.1
Percent of Total Debt:
Fixed rate (including swapped debt)		82.5	%
Variable rate		17.5	%
Total		100.0	%
Effective Interest Rate as of September 30, 2012(1):
Fixed rate (including hedged variable rate debt)		4.83	%
Variable rate		2.07	%
Effective interest rate		4.35	%

(1) Excludes impact of deferred financing cost amortization.

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As of September 30, 2012, we had approximately $4.1 billion of outstanding consolidated long-term debt as set forth in the table above. Our ratio of debt to total enterprise value was approximately 30% (based on the closing price of Digital Realty Trust, Inc.’s common stock on September 30, 2012 of $69.85). For this purpose, our total enterprise value is defined as the sum of the market value of Digital Realty Trust, Inc.’s outstanding common stock (which may decrease, thereby increasing our debt to total enterprise value ratio), excluding options issued under our incentive award plan, plus the liquidation value of Digital Realty Trust, Inc.’s preferred stock, plus the aggregate value of our operating partnership’s units not held by Digital Realty Trust, Inc. (with the per unit value equal to the market value of one share of Digital Realty Trust, Inc.’s common stock and excluding long-term incentive units and Class C Units), plus the book value of our total consolidated indebtedness.

The variable rate debt shown above bears interest at interest rates based on various one-month LIBOR, EURIBOR, GBP LIBOR, SIBOR, BBR and HIBOR rates, depending on the respective agreement governing the debt, including our global revolving credit facility and unsecured term loan. Assuming maturity of the 2029 Debentures at its first redemption date in April 2014, as of September 30, 2012, our debt had a weighted average term to initial maturity of approximately 4.7 years (approximately 4.8 years assuming exercise of extension options).

Off-Balance Sheet Arrangements

As of September 30, 2012, we were party to interest rate swap agreements related to $703.9 million of outstanding principal on our variable rate debt. See Item 3 “Quantitative and Qualitative Disclosures about Market Risk.”

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Cash Flows

The following summary discussion of our cash flows is based on the consolidated statements of cash flows and is not meant to be an all-inclusive discussion of the changes in our cash flows for the periods presented below.

Comparison of Nine Months Ended September 30, 2012 to Nine Months Ended September 30, 2011

The following table shows cash flows and ending cash and cash equivalent balances for the nine months ended September 30, 2012 and 2011 (in thousands):

	Nine Months Ended September 30,
	2012			2011			Change
Net cash provided by operating activities	$	356,536		$	280,098		$	76,438
Net cash used in investing activities		(2,084,928	)		(591,685	)		(1,493,243	)
Net cash provided by financing activities		1,763,876			338,600			1,425,276
Net increase in cash and cash equivalents	$	35,484		$	27,013		$	8,471

The increase in net cash provided by operating activities was due to increased cash flows from new leasing at our same store properties, completed and leased development and redevelopment space and our acquisition of new operating properties which was partially offset by increased operating and interest expenses. Net cash used in investing activities increased for the nine months ended September 30, 2012, due to an increase in cash paid for acquisitions for the nine months ended September 30, 2012 ($1.5 billion) as compared to in the same period in 2011 ($86.6 million) along with an increase in cash paid for capital expenditures for the nine months ended September 30, 2012 ($596.6 million) as compared to the same period in 2011 ($489.7 million).

Cash flows from financing activities for the company consisted of the following amounts (in thousands):

	Nine Months Ended September 30,
	2012			2011			Change
Proceeds from borrowings, net of repayments	$	799,070		$	(321,546	)	$	1,120,616
Net proceeds from issuance of common and preferred stock, including exercise of stock options		1,040,155			695,061			345,094
Net proceeds from 2022 Notes		296,052			—			296,052
Net proceeds from 2021 Notes		—			395,777			(395,777	)
Principal payments on 2026 Debentures		—			(88,758	)		88,758
Purchase of noncontrolling interests in consolidated joint ventures		(12,384	)		(53,240	)		40,856
Dividend and distribution payments		(363,351	)		(276,957	)		(86,394	)
Other		4,334			(11,737	)		16,071
Net cash provided by financing activities	$	1,763,876		$	338,600		$	1,425,276

The increase in net cash provided by financing activities was primarily due to net borrowings during the nine months ended September 30, 2012 (net proceeds of $799.1 million) as compared to net repayments for the nine months ended September 30, 2011 (net payments of $321.5 million), the issuance of Digital Realty Trust, Inc.’s common stock in its underwritten public offering in July 2012 (net proceeds of $797.2 million) along with the issuance of our 2022 Notes (net proceeds of $296.1 million) in September 2012 offset by the issuance of our 2021 Notes (net proceeds of $395.8 million) during the nine months ended September 30, 2011. The increase in dividend and distribution payments for the nine months ended September 30, 2012 as compared to the same period in 2011 was a due to an increase in the number of shares outstanding and dividend amount per share of common stock in 2012 as compared to 2011 and the payment of dividends on our series E and series F preferred stock during the nine months ended September 30, 2012, whereas these series of preferred stock were not outstanding during the entire nine months ended September 30, 2011.

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Cash flows from financing activities for the operating partnership consisted of the following amounts (in thousands):

	Nine Months Ended September 30,
	2012			2011			Change
Proceeds from borrowings, net of repayments	$	799,070		$	(321,546	)	$	1,120,616
General partner contributions, net		1,040,155			695,061			345,094
Net proceeds from 2022 Notes		296,052			—			296,052
Net proceeds from 2021 Notes		—			395,777			(395,777	)
Principal payments on 2026 Debentures		—			(88,758	)		88,758
Purchase of noncontrolling interests in consolidated joint ventures		(12,384	)		(53,240	)		40,856
Distribution payments		(363,351	)		(276,957	)		(86,394	)
Other		4,334			(11,737	)		16,071
Net cash provided by financing activities	$	1,763,876		$	338,600		$	1,425,276

The increase in net cash provided by financing activities was primarily due to net borrowings during the nine months ended September 30, 2012 (net proceeds of $799.1 million) as compared to net repayments for the nine months ended September 30, 2011 (net payments of $321.5 million), general partner contributions in connection with Digital Realty Trust, Inc.’s common stock offering in July 2012 (net contributions of $797.2 million) and the issuance of our 2022 Notes (net proceeds of $296.1 million) in September 2012 offset by the issuance of the 2021 Notes (net proceeds of $395.8 million) during the nine months ended September 30, 2011. The increase in distribution payments for the nine months ended September 30, 2012 as compared to the same period in 2011 was due to an increase in the number of units outstanding and distribution amount per common unit in 2012 as compared to 2011 and the payment of distributions on our series E and series F preferred units during the nine months ended September 30, 2012, whereas these series of preferred units were not outstanding during the entire nine months ended September 30, 2011.

Noncontrolling Interests in Operating Partnership

Noncontrolling interests relate to the common units in our operating partnership that are not owned by Digital Realty Trust, Inc., which, as of September 30, 2012, amounted to 3.6% of our operating partnership common units. In conjunction with our formation, GI Partners received common units, in exchange for contributing ownership interests in properties to our operating partnership. Also, our operating partnership issued common units to third party sellers in connection with our acquisition of real estate interests from such third parties.

Limited partners who acquired common units in connection with our formation have the right to require our operating partnership to redeem part or all of their common units for cash based upon the fair market value of an equivalent number of shares of Digital Realty Trust, Inc. common stock at the time of the redemption. Alternatively, we may elect to acquire those common units in exchange for shares of Digital Realty Trust, Inc. common stock on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, issuance of stock rights, specified extraordinary distributions and similar events. Pursuant to registration rights agreements we entered into with GI Partners and the other third party contributors, we filed a shelf registration statement covering the issuance of the shares of our common stock issuable upon redemption of the common units, and the resale of those shares of common stock by the holders. As of March 31, 2007, GI Partners no longer had an ownership interest in our operating partnership.

Inflation

Many of our leases provide for separate real estate tax and operating expense escalations. In addition, many of the leases provide for fixed base rent increases. We believe that inflationary increases may be at least partially offset by the contractual rent increases and expense escalations described above. See “Factors Which May Influence Future Results of Operations—Operating Expenses” for further discussion.

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Funds from Operations

We calculate Funds from Operations, or FFO, in accordance with the standards established by the National Association of Real Estate Investment Trusts, or NAREIT. FFO represents net income (loss) available to common stockholders and unitholders (computed in accordance with U.S. GAAP), excluding gains (or losses) from sales of property, impairment charges, real estate related depreciation and amortization (excluding amortization of deferred financing costs) and after adjustments for unconsolidated partnerships and joint ventures. Management uses FFO as a supplemental performance measure because, in excluding real estate related depreciation and amortization and gains and losses from property dispositions, it provides a performance measure that, when compared year over year, captures trends in occupancy rates, rental rates and operating costs. We also believe that, as a widely recognized measure of the performance of REITs, FFO will be used by investors as a basis to compare our operating performance with that of other REITs. However, because FFO excludes depreciation and amortization and captures neither the changes in the value of our properties that result from use or market conditions, nor the level of capital expenditures and leasing commissions necessary to maintain the operating performance of our properties, all of which have real economic effect and could materially impact our financial condition and results from operations, the utility of FFO as a measure of our performance is limited. Other REITs may not calculate FFO in accordance with the NAREIT definition and, accordingly, our FFO may not be comparable to such other REITs’ FFO. Accordingly, FFO should be considered only as a supplement to net income as a measure of our performance.

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Reconciliation of Net Income Available to Common Stockholders to Funds From Operations (FFO)

(in thousands, except per share data)

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Net income available to common stockholders	$	45,615		$	31,908		$	126,847		$	94,878
Adjustments:
Noncontrolling interests in operating partnership		1,574			1,421			4,821			4,655
Real estate related depreciation and amortization (1)		100,994			78,550			272,173			228,461
Real estate related depreciation and amortization related to investment in unconsolidated joint ventures		710			918			2,481			2,703
Gain on sale of assets held in unconsolidated joint venture		—			—			(2,325	)		—
FFO available to common stockholders and unitholders (2)	$	148,893		$	112,797		$	403,997		$	330,697
Basic FFO per share and unit	$	1.18		$	1.07		$	3.44		$	3.28
Diluted FFO per share and unit (2)	$	1.13		$	1.01		$	3.28		$	3.04
Weighted average common stock and units outstanding
Basic		126,243			105,069			117,291			100,846
Diluted (2)		137,304			120,235			129,439			117,899
(1)    Real estate related depreciation and amortization was computed as follows:
Depreciation and amortization per income statement		101,840			79,047			274,835			229,813
Non-real estate depreciation		(846	)		(497	)		(2,662	)		(1,352	)
	$	100,994		$	78,550		$	272,173		$	228,461

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(2) At September 30, 2012, we had 5,098 series D convertible preferred shares outstanding that were convertible into 4,219 common shares on a weighted average basis for the three months ended September 30, 2012. For the three months ended September 30, 2012, we have excluded the effect of dilutive series E and series F preferred stock, that may be converted upon the occurrence of specified change in control transactions as described in the articles supplementary governing the series E and series F preferred stock, which we consider highly improbable; if included, the dilutive effect for the three months ended September 30, 2012 would be 6,784 shares. In addition, we had a balance of $266,400 of 5.50% exchangeable senior debentures due 2029 that were exchangeable for 6,515 common shares on a weighted average basis for the three months ended September 30, 2012. See below for calculations of diluted FFO available to common stockholders and unitholders and weighted average common stock and units outstanding.

	Three Months Ended September 30,				Nine Months Ended September 30,
	2012		2011		2012		2011
FFO available to common stockholders and unitholders	$	148,893	$	112,797	$	403,997	$	330,697
Add: Series C convertible preferred dividends		—		1,402		1,402		4,675
Add: Series D convertible preferred dividends		1,723		3,034		6,515		10,996
Add: 5.50% exchangeable senior debentures interest expense		4,050		4,050		12,150		12,150
FFO available to common stockholders and unitholders—diluted	$	154,666	$	121,283	$	424,064	$	358,518
Weighted average common stock and units outstanding		126,243		105,069		117,291		100,846
Add: Effect of dilutive securities (excluding series C and D convertible preferred stock and 5.50% exchangeable senior debentures)		327		410		280		871
Add: Effect of dilutive series C convertible preferred stock		—		2,784		1,087		3,097
Add: Effect of dilutive series D convertible preferred stock		4,219		5,604		4,310		6,775
Add: Effect of dilutive 5.50% exchangeable senior debentures		6,515		6,368		6,471		6,310
Weighted average common stock and units outstanding—diluted		137,304		120,235		129,439		117,899

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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

Our future income, cash flows and fair values relevant to financial instruments depend upon prevalent market interest rates. Market risk refers to the risk of loss from adverse changes in market prices and interest rates. We do not use derivatives for trading or speculative purposes and only enter into contracts with major financial institutions based on their credit rating and other factors.

Analysis of Debt between Fixed and Variable Rate

We use interest rate swap agreements and fixed rate debt to reduce our exposure to interest rate movements. As of September 30, 2012, our consolidated debt was as follows (in millions):

	Carrying Value		Estimated  Fair Value
Fixed rate debt	$	2,660.2	$	3,095.5
Variable rate debt subject to interest rate swaps		703.9		704.4
Total fixed rate debt (including interest rate swaps)		3,364.1		3,799.9
Variable rate debt		716.0		716.0
Total outstanding debt	$	4,080.1	$	4,515.9

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Interest rate derivatives included in this table and their fair values as of September 30, 2012 and December 31, 2011 were as follows (in thousands):

Notional Amount															Fair Value at Significant Other Observable Inputs (Level 2)
As of September 30, 2012			As of December 31, 2011			Type of Derivative		Strike Rate		Effective Date		Expiration Date			As of September 30, 2012			As of December 31, 2011
	$69,235	(1)	$	66,563	(1)		Swap		2.980		April 6, 2009		Nov. 30, 2013		$	(1,970	)	$	(2,363	)
	13,053	(2)		13,319	(2)		Swap		3.981		May 17, 2006		Jul. 18, 2013			(387	)		(583	)
	9,444	(2)		9,636	(2)		Swap		4.070		Jun. 23, 2006		Jul. 18, 2013			(287	)		(435	)
	8,312	(2)		8,480	(2)		Swap		3.989		Jul. 27, 2006		Oct. 18, 2013			(324	)		(432	)
	—			39,483	(2)		Swap		3.776		Dec. 5, 2006		Jan. 18, 2012	(3)		—			(41	)
	—			33,946	(2)		Swap		4.000		Dec. 20, 2006		Jan. 18, 2012	(3)		—			(38	)
	38,580	(2)		38,883	(2)		Swap		2.703		Dec. 3, 2009		Sep. 4, 2014			(1,773	)		(1,592	)
	410,905	(6)		—			Swap		0.717		Various		Various			(4,063	)		—
	154,391	(7)		—			Swap		0.925		Jul. 6, 2012		Apr. 18, 2017			(554	)		—
	—			16,163			Cap		4.000		June 24, 2009		June 25, 2012	(4)		—			—
	—			20,500			Cap		4.000		Aug. 4, 2010		June 15, 2013	(5)		—			—
	$703,920		$	246,973											$	(9,358	)	$	(5,484	)

(1) Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.

(2) Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.

(3) The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.

(4) This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.

(5) This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.

(6) Represents the U.S. Dollar tranche of the unsecured term loan.

(7) Represents the Singapore Dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.

81

Sensitivity to Changes in Interest Rates.

The following table shows the effect if assumed changes in interest rates occurred:

Assumed event	Interest rate change (basis points)			Change ($ millions)
Increase in fair value of interest rate swaps following an assumed 10% increase in interest rates		6		$	1.5
Decrease in fair value of interest rate swaps following an assumed 10% decrease in interest rates		(6	)		(1.5	)
Increase in annual interest expense on our debt that is variable rate and not subject to swapped interest following a 10% increase in interest rates		6			0.4
Decrease in annual interest expense on our debt that is variable rate and not subject to swapped interest following a 10% decrease in interest rates		(6	)		(0.4	)
Increase in fair value of fixed rate debt following a 10% decrease in interest rates		(6	)		6.9
Decrease in fair value of fixed rate debt following a 10% increase in interest rates		6			(7.3	)

Interest risk amounts were determined by considering the impact of hypothetical interest rates on our financial instruments. These analyses do not consider the effect of any change in overall economic activity that could occur in that environment. Further, in the event of a change of that magnitude, we may take actions to further mitigate our exposure to the change. However, due to the uncertainty of the specific actions that would be taken and their possible effects, these analyses assume no changes in our financial structure.

Foreign Currency Exchange Risk

For the nine months ended September 30, 2012, we had foreign operations in the United Kingdom, Ireland, France, The Netherlands, Switzerland, Canada and Singapore as well as Australia and Hong Kong, and, as such, are subject to risk from the effects of exchange rate movements of foreign currencies, which may affect future costs and cash flows. Our foreign operations are conducted in the British Pound, Euro, Swiss Franc, Australian Dollar, Singapore Dollar and the Hong Kong Dollar, except for our Canadian property for which the functional currency is the U.S. dollar. Our primary currency exposures are to the British Pound, Euro and the Singapore Dollar. We attempt to mitigate a portion of the risk of currency fluctuation by financing our investments in the local currency denominations, although there can be no assurance that this will be effective. As a result, changes in the relation of any such foreign currency to U.S. dollars may affect our revenues, operating margins and distributions and may also affect the book value of our assets and the amount of stockholders’ equity. For the three months ended September 30, 2012 and 2011, operating revenues from properties outside the United States contributed $70.7 million and $28.8 million, respectively, which represented 20.6% and 10.5% of our operating revenues, respectively, and for the nine months ended September 30, 2012 and 2011, operating revenues from properties outside the United States contributed $146.2 million and $82.1 million, respectively, which represented 15.7% and 10.4% of our operating revenues, respectively. Net investment in properties outside the United States was $2,421.9 million and $963.3 million as of September 30, 2012 and December 31, 2011, respectively.

82

ITEM 4. CONTROLS AND PROCEDURES.

Evaluation of Disclosure Controls and Procedures (Digital Realty Trust, Inc.)

The company maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in its reports filed under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time periods specified in the U.S. Securities and Exchange Commission’s rules and forms, and that such information is accumulated and communicated to its management, including its chief executive officer and chief financial officer, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, the company’s management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and its management is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Also, the company has investments in certain unconsolidated entities, which are accounted for using the equity method of accounting. As the company does not control or manage these entities, its disclosure controls and procedures with respect to such entities may be substantially more limited than those it maintains with respect to its consolidated subsidiaries.

As required by Rule 13a-15(b) or Rule 15d-15(b) of the Securities Exchange Act of 1934, as amended, management of the company carried out an evaluation, under the supervision and with participation of its chief executive officer and chief financial officer, of the effectiveness of the design and operation of its disclosure controls and procedures that were in effect as of the end of the quarter covered by this report. Based on the foregoing, the company’s chief executive officer and chief financial officer each concluded that its disclosure controls and procedures were effective at the reasonable assurance level.

There have been no changes in the company’s internal control over financial reporting during its most recent fiscal quarter that have materially affected, or are reasonably likely to materially affect, its internal control over financial reporting.

Evaluation of Disclosure Controls and Procedures (Digital Realty Trust, L.P.)

The operating partnership maintains disclosure controls and procedures that are designed to ensure that information required to be disclosed in its reports filed under the Securities Exchange Act of 1934, as amended, is recorded, processed, summarized and reported within the time periods specified in the U.S. Securities and Exchange Commission’s rules and forms, and that such information is accumulated and communicated to its management, including the chief executive officer and chief financial officer of its general partner, as appropriate, to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, the operating partnership’s management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives, and its management is required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. Also, the operating partnership has investments in certain unconsolidated entities, which are accounted for using the equity method of accounting. As the operating partnership does not control or manage these entities, its disclosure controls and procedures with respect to such entities may be substantially more limited than those it maintains with respect to its consolidated subsidiaries.

As required by Rule 13a-15(b) or Rule 15d-15(b) of the Securities Exchange Act of 1934, as amended, management of the operating partnership carried out an evaluation, under the supervision and with participation of the chief executive officer and chief financial officer of its general partner, of the effectiveness of the design and operation of its disclosure controls and procedures that were in effect as of the end of the quarter covered by this report. Based on the foregoing, the chief executive officer and chief financial officer of the operating partnership’s general partner each concluded that its disclosure controls and procedures were effective at the reasonable assurance level.

There have been no changes in the operating partnership’s internal control over financial reporting during its most recent fiscal quarter that have materially affected, or are reasonably likely to materially affect, its internal control over financial reporting.

83

PART II—OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS.

None.

ITEM 1A. RISK FACTORS.

The risk factors discussed under the heading “Risk Factors” and elsewhere in the company’s and the operating partnership’s Annual Report on Form 10-K for the year ended December 31, 2011 continue to apply to our business.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS.

Digital Realty Trust, Inc.

None.

Digital Realty Trust, L.P.

During the three months ended September 30, 2012, holders of 1,865,950 shares of Digital Realty Trust, Inc.’s series D cumulative convertible preferred stock exercised their right to convert such series D preferred shares into Digital Realty Trust, Inc.’s common stock and received 1,186,740 shares of Digital Realty Trust, Inc.’s common stock. In connection with this conversion, our operating partnership issued 1,186,740 common units to Digital Realty Trust, Inc. upon conversion of 1,865,950 series D cumulative convertible preferred units.

During the three months ended September 30, 2012, Digital Realty Trust, Inc. issued an aggregate of 150,775 shares of its common stock upon the exercise of stock options. Digital Realty Trust, Inc. contributed the proceeds of approximately $2.2 million to our operating partnership in exchange for an aggregate of 150,775 common units, as required by our operating partnership’s partnership agreement.

On July 2, 2012, our operating partnership issued 11.5 million common units to Digital Realty Trust, Inc. in exchange for the contribution by Digital Realty Trust, Inc. to it of the net proceeds of approximately $797.2 million from Digital Realty Trust’s issuance of 11.5 million shares of common stock in an underwritten public offering.

For these issuances of common and preferred units to Digital Realty Trust, Inc., our operating partnership relied on Digital Realty Trust, Inc.’s status as a publicly traded NYSE- listed company with over $8 billion in total consolidated assets and as our operating partnership’s majority owner and general partner as the basis for the exemption under Section 4(2) of the Securities Act.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES.

None.

ITEM 4. MINE SAFETY DISCLOSURES.

Not applicable.

ITEM 5. OTHER INFORMATION.

None.

84

ITEM 6. EXHIBITS.

Exhibit Number	Description
3.1	Articles of Amendment and Restatement of Digital Realty Trust, Inc., as amended (incorporated by reference to Exhibit 3.1 to the Combined Quarterly Report on Form 10-Q of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. filed on May 7, 2012).
3.2	Fourth Amended and Restated Bylaws of Digital Realty Trust, Inc. (incorporated by reference to Exhibit 3.1 to Digital Realty Trust, Inc.’s Current Report on Form 8-K filed on February 21, 2012).
3.3	Certificate of Limited Partnership of Digital Realty Trust, L.P. (incorporated by reference to Exhibit 3.1 to Digital Realty Trust, L.P.’s General Form for Registration of Securities on Form 10 (File No. 000-54023) filed on June 25, 2010).
3.4	Tenth Amended and Restated Agreement of Limited Partnership of Digital Realty Trust, L.P. (incorporated by reference to Exhibit 3.1 to the Combined Current Report on Form 8-K of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. filed on April 10, 2012).
4.1	Indenture, dated as of September 24, 2012, among Digital Realty Trust, L.P., as issuer, Digital Realty Trust, Inc., as guarantor, and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.1 to the Combined Current Report on Form 8-K of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. filed on September 24, 2012).
4.2	Supplemental Indenture No. 1, dated as of September 24, 2012, among Digital Realty Trust, L.P., as issuer, Digital Realty Trust, Inc., as guarantor, and Wells Fargo Bank, National Association, as trustee, including the form of 3.625% Notes due 2022 and the guarantee (incorporated by reference to Exhibit 4.2 to the Combined Current Report on Form 8-K of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. filed on September 24, 2012).
12.1	Statement of Computation of Ratios.
31.1	Rule 13a-14(a)/15d-14(a) Certifications of Chief Executive Officer for Digital Realty Trust, Inc.
31.2	Rule 13a-14(a)/15d-14(a) Certifications of Chief Financial Officer for Digital Realty Trust, Inc.
31.3	Rule 13a-14(a)/15d-14(a) Certifications of Chief Executive Officer for Digital Realty Trust, L.P.
31.4	Rule 13a-14(a)/15d-14(a) Certifications of Chief Financial Officer for Digital Realty Trust, L.P.
32.1	18 U.S.C. § 1350 Certifications of Chief Executive Officer for Digital Realty Trust, Inc.
32.2	18 U.S.C. § 1350 Certifications of Chief Financial Officer for Digital Realty Trust, Inc.
32.3	18 U.S.C. § 1350 Certifications of Chief Executive Officer for Digital Realty Trust, L.P.
32.4	18 U.S.C. § 1350 Certifications of Chief Financial Officer for Digital Realty Trust, L.P.
101*	The following financial statements from Digital Realty Trust, Inc.’s and Digital Realty Trust, L.P.’s Form 10-Q for the quarter ended September 30, 2012, formatted in XBRL interactive data files: (i) Condensed Consolidated Balance Sheets as of September 30, 2012 and December 31, 2011; (ii) Condensed Consolidated Income Statements for the three and nine months ended September 30, 2012 and 2011; (iii) Condensed Consolidated Statement of Equity/Statement of Capital for the nine months ended September 30, 2012; (iv) Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2012 and 2011; (v) Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2012 and 2011; and (vi) Notes to Condensed Consolidated Financial Statements.

* Pursuant to Rule 406T of Regulation S-T, the interactive data files for Digital Realty Trust, L.P. are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of the Exchange Act of 1934, as amended, and otherwise are not subject to liability under these sections.

85

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	DIGITAL REALTY TRUST, INC.
November 8, 2012	/S/    MICHAEL F. FOUST
	Michael F. Foust Chief Executive Officer (principal executive officer)
November 8, 2012	/S/    A. WILLIAM STEIN
	A. William Stein Chief Financial Officer and Chief Investment Officer (principal financial officer)
November 8, 2012	/S/    EDWARD F. SHAM
	Edward F. Sham Sr. Vice President and Controller (principal accounting officer)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	DIGITAL REALTY TRUST, L.P.
	By:	Digital Realty Trust, Inc. Its general partner
	By:
November 8, 2012	/S/    MICHAEL F. FOUST
	Michael F. Foust Chief Executive Officer (principal executive officer)
November 8, 2012	/S/    A. WILLIAM STEIN
	A. William Stein Chief Financial Officer and Chief Investment Officer (principal financial officer)
November 8, 2012	/S/    EDWARD F. SHAM
	Edward F. Sham Sr. Vice President and Controller (principal accounting officer)

86

Exhibit Index

Exhibit Number	Description
3.1	Articles of Amendment and Restatement of Digital Realty Trust, Inc., as amended (incorporated by reference to Exhibit 3.1 to the Combined Quarterly Report on Form 10-Q of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. filed on May 7, 2012).
3.2	Fourth Amended and Restated Bylaws of Digital Realty Trust, Inc. (incorporated by reference to Exhibit 3.1 to Digital Realty Trust, Inc.’s Current Report on Form 8-K filed on February 21, 2012).
3.3	Certificate of Limited Partnership of Digital Realty Trust, L.P. (incorporated by reference to Exhibit 3.1 to Digital Realty Trust, L.P.’s General Form for Registration of Securities on Form 10 (File No. 000-54023) filed on June 25, 2010).
3.4	Tenth Amended and Restated Agreement of Limited Partnership of Digital Realty Trust, L.P. (incorporated by reference to Exhibit 3.1 to the Combined Current Report on Form 8-K of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. filed on April 10, 2012).
4.1	Indenture, dated as of September 24, 2012, among Digital Realty Trust, L.P., as issuer, Digital Realty Trust, Inc., as guarantor, and Wells Fargo Bank, National Association, as trustee (incorporated by reference to Exhibit 4.1 to the Combined Current Report on Form 8-K of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. filed on September 24, 2012)
4.2	Supplemental Indenture No. 1, dated as of September 24, 2012, among Digital Realty Trust, L.P., as issuer, Digital Realty Trust, Inc., as guarantor, and Wells Fargo Bank, National Association, as trustee, including the form of 3.625% Notes due 2022 and the guarantee (incorporated by reference to Exhibit 4.2 to the Combined Current Report on Form 8-K of Digital Realty Trust, Inc. and Digital Realty Trust, L.P. filed on September 24, 2012).
12.1	Statement of Computation of Ratios.
31.1	Rule 13a-14(a)/15d-14(a) Certifications of Chief Executive Officer for Digital Realty Trust, Inc.
31.2	Rule 13a-14(a)/15d-14(a) Certifications of Chief Financial Officer for Digital Realty Trust, Inc.
31.3	Rule 13a-14(a)/15d-14(a) Certifications of Chief Executive Officer for Digital Realty Trust, L.P.
31.4	Rule 13a-14(a)/15d-14(a) Certifications of Chief Financial Officer for Digital Realty Trust, L.P.
32.1	18 U.S.C. § 1350 Certifications of Chief Executive Officer for Digital Realty Trust, Inc.
32.2	18 U.S.C. § 1350 Certifications of Chief Financial Officer for Digital Realty Trust, Inc.
32.3	18 U.S.C. § 1350 Certifications of Chief Executive Officer for Digital Realty Trust, L.P.
32.4	18 U.S.C. § 1350 Certifications of Chief Financial Officer for Digital Realty Trust, L.P.
101*	The following financial statements from Digital Realty Trust, Inc.’s and Digital Realty Trust, L.P.’s Form 10-Q for the quarter ended September 30, 2012, formatted in XBRL interactive data files: (i) Condensed Consolidated Balance Sheets as of September 30, 2012 and December 31, 2011; (ii) Condensed Consolidated Income Statements for the three and nine months ended September 30, 2012 and 2011; (iii) Condensed Consolidated Statement of Equity/Statement of Capital for the nine months ended September 30, 2012; (iv) Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2012 and 2011; (v) Condensed Consolidated Statements of Cash Flows for the nine months ended September 30, 2012 and 2011; and (vi) Notes to Condensed Consolidated Financial Statements.

* Pursuant to Rule 406T of Regulation S-T, the interactive data files for Digital Realty Trust, L.P. are deemed not filed or part of a registration statement or prospectus for purposes of Sections 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purposes of Section 18 of the Exchange Act of 1934, as amended, and otherwise are not subject to liability under these sections.

87

EX-12.1

Exhibit 12.1

Digital Realty Trust, Inc. and Subsidiaries

Statement of Computation of Ratios ⁽¹⁾

(in thousands, except ratios)

	Nine Months Ended September 30,				Year Ended December 31,
	2012		2011		2011		2010		2009			2008			2007
Income from continuing operations before noncontrolling interests	$	160,152	$	114,929	$	162,126	$	105,412	$	91,234		$	67,918		$	22,546
Interest expense		116,758		112,494		149,350		137,384		88,442			63,621			67,054
Interest within rental expense (2)		2,435		2,154		2,847		2,604		2,633			2,619			1,971
Noncontrolling interests in consolidated joint ventures		437		257		324		288		(140	)		(335	)		—
Earnings available to cover fixed charges	$	279,782	$	229,834	$	314,647	$	245,688	$	182,169		$	133,823		$	91,571
Fixed charges:
Interest expense	$	116,758	$	112,494	$	149,350	$	137,384	$	88,442		$	63,621		$	67,054
Interest within rental expense (2)		2,435		2,154		2,847		2,604		2,633			2,619			1,971
Capitalized interest		13,623		13,643		17,905		10,241		9,196			18,351			12,264
		132,816		128,291		170,102		150,229		100,271			84,591			81,289
Preferred stock dividends		28,921		15,671		25,397		37,004		40,404			38,564			19,330
Fixed charges and preferred stock dividends	$	161,737	$	143,962	$	195,499	$	187,233	$	140,675		$	123,155		$	100,619
Ratio of earnings to fixed charges		2.11		1.79		1.85		1.64		1.82			1.58			1.13
Ratio of earnings to fixed charges and preferred stock dividends		1.73		1.60		1.61		1.31		1.29			1.09			—	(3)

(1) All numbers presented in this exhibit exclude 100 Technology Center Drive (sold in March 2007) and 4055 Valley View Lane (sold in March 2007).

(2) Interest within rental expense represents one-third of rental expense (the approximate portion of rental expense representing interest).

(3) For the year ended December 31, 2007, earnings were insufficient to cover fixed charges and preferred dividends by $9,048.

Digital Realty Trust, L.P. and Subsidiaries

Statement of Computation of Ratios ⁽¹⁾

(in thousands, except ratios)

	Nine Months Ended September 30,				Year Ended December 31,
	2012		2011		2011		2010		2009			2008			2007
Income from continuing operations before noncontrolling interests	$	160,152	$	114,929	$	162,126	$	105,412	$	91,234		$	67,918		$	22,546
Interest expense		116,758		112,494		149,350		137,384		88,442			63,621			67,054
Interest within rental expense (2)		2,435		2,154		2,847		2,604		2,633			2,619			1,971
Noncontrolling interests in consolidated joint ventures		437		257		324		288		(140	)		(335	)		—
Earnings available to cover fixed charges	$	279,782	$	229,834	$	314,647	$	245,688	$	182,169		$	133,823		$	91,571
Fixed charges:
Interest expense	$	116,758	$	112,494	$	149,350	$	137,384	$	88,442		$	63,621		$	67,054
Interest within rental expense (2)		2,435		2,154		2,847		2,604		2,633			2,619			1,971
Capitalized interest		13,623		13,643		17,905		10,241		9,196			18,351			12,264
		132,816		128,291		170,102		150,229		100,271			84,591			81,289
Preferred unit distributions		28,921		15,671		25,397		37,004		40,404			38,564			19,330
Fixed charges and preferred unit distributions	$	161,737	$	143,962	$	195,499	$	187,233	$	140,675		$	123,155		$	100,619
Ratio of earnings to fixed charges		2.11		1.79		1.85		1.64		1.82			1.58			1.13
Ratio of earnings to fixed charges and preferred unit distributions		1.73		1.60		1.61		1.31		1.29			1.09			—	(3)

(1) All numbers presented in this exhibit exclude 100 Technology Center Drive (sold in March 2007) and 4055 Valley View Lane (sold in March 2007).

(2) Interest within rental expense represents one-third of rental expense (the approximate portion of rental expense representing interest).

(3) For the year ended December 31, 2007, earnings were insufficient to cover fixed charges and preferred distributions by $9,048.

EX-31.1

Exhibit 31.1

Certification of Principal Executive Officer

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Michael F. Foust, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Digital Realty Trust, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: November 8, 2012

By:	/s/    MICHAEL F. FOUST
	Michael F. Foust
	Chief Executive Officer (Principal Executive Officer)

EX-31.2

Exhibit 31.2

Certification of Principal Financial Officer

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, A. William Stein, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Digital Realty Trust, Inc.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: November 8, 2012

By:	/s/    A. WILLIAM STEIN
	A. William Stein
	Chief Financial Officer and Chief Investment Officer (Principal Financial Officer)

EX-31.3

Exhibit 31.3

Certification of Principal Executive Officer

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Michael F. Foust, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Digital Realty Trust, L.P.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: November 8, 2012

By:	/s/    MICHAEL F. FOUST
	Michael F. Foust
	Chief Executive Officer (Principal Executive Officer) Digital Realty Trust, Inc., sole general partner of Digital Realty Trust, L.P.

EX-31.4

Exhibit 31.4

Certification of Principal Financial Officer

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, A. William Stein, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Digital Realty Trust, L.P.;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: November 8, 2012

By:	/s/    A. WILLIAM STEIN
	A. William Stein
	Chief Financial Officer and Chief Investment Officer (Principal Financial Officer) Digital Realty Trust, Inc., sole general partner of Digital Realty Trust, L.P.

EX-32.1

Exhibit 32.1

Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as

Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Digital Realty Trust, Inc. (the “Company”) hereby certifies, to such officer’s knowledge, that:

(i) the accompanying Quarterly Report on Form 10-Q of the Company for the quarterly period ended September 30, 2012 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company at the dates and for the periods indicated.

Dated: November 8, 2012

/s/    MICHAEL F. FOUST        

Michael F. Foust

Chief Executive Officer

Pursuant to Securities and Exchange Commission Release 33-8238, dated June 5, 2003, this certification is being furnished and shall not be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference in any registration statement of the Company filed under the Securities Act of 1933, as amended.

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as

Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Digital Realty Trust, Inc. (the “Company”) hereby certifies, to such officer’s knowledge, that:

(i) the accompanying Quarterly Report on Form 10-Q of the Company for the quarterly period ended September 30, 2012 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company at the dates and for the periods indicated.

Dated: November 8, 2012

/s/    A. WILLIAM STEIN        

A. William Stein

Chief Financial Officer

Pursuant to Securities and Exchange Commission Release 33-8238, dated June 5, 2003, this certification is being furnished and shall not be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference in any registration statement of the Company filed under the Securities Act of 1933, as amended.

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.3

Exhibit 32.3

Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as

Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Digital Realty Trust, Inc., in its capacity as the sole general partner of Digital Realty Trust, L.P. (the “Operating Partnership”), hereby certifies, to such officer’s knowledge, that:

(i) the accompanying Quarterly Report on Form 10-Q of the Operating Partnership for the quarterly period ended September 30, 2012 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Operating Partnership at the dates and for the periods indicated.

Dated: November 8, 2012

/s/    MICHAEL F. FOUST        

Michael F. Foust

Chief Executive Officer

Digital Realty Trust, Inc., sole general partner of

Digital Realty Trust, L.P.

Pursuant to Securities and Exchange Commission Release 33-8238, dated June 5, 2003, this certification is being furnished and shall not be deemed filed by the Operating Partnership for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference in any registration statement of the Operating Partnership filed under the Securities Act of 1933, as amended.

A signed original of this written statement required by Section 906 has been provided to the Operating Partnership and will be retained by the Operating Partnership and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.4

Exhibit 32.4

Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as

Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Pursuant to 18 U.S.C. § 1350, as created by Section 906 of the Sarbanes-Oxley Act of 2002, the undersigned officer of Digital Realty Trust, Inc., in its capacity as the sole general partner of Digital Realty Trust, L.P. (the “Operating Partnership”), hereby certifies, to such officer’s knowledge, that:

(i) the accompanying Quarterly Report on Form 10-Q of the Operating Partnership for the quarterly period ended September 30, 2012 (the “Report”) fully complies with the requirements of Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934, as amended; and

(ii) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Operating Partnership at the dates and for the periods indicated.

Dated: November 8, 2012

/s/    A. WILLIAM STEIN        

A. William Stein

Chief Financial Officer

Digital Realty Trust, Inc., sole general partner of

Digital Realty Trust, L.P.

Pursuant to Securities and Exchange Commission Release 33-8238, dated June 5, 2003, this certification is being furnished and shall not be deemed filed by the Operating Partnership for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or incorporated by reference in any registration statement of the Operating Partnership filed under the Securities Act of 1933, as amended.

A signed original of this written statement required by Section 906 has been provided to the Operating Partnership and will be retained by the Operating Partnership and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Organization And Description Of Business (Narrative) (Details)	Sep. 30, 2012 property
Organization and Description of Business [Line Items]
Number of properties owned	110
Common Interest [Member]
Organization and Description of Business [Line Items]
Ownership percentage in the Operating Partnership	96.40%
Preferred Interest [Member]
Organization and Description of Business [Line Items]
Ownership percentage in the Operating Partnership	100.00%
Joint Ventures [Member]
Organization and Description of Business [Line Items]
Number of properties held as investments in unconsolidated joint ventures	3
North America [Member]
Organization and Description of Business [Line Items]
Number of properties owned	91
Europe [Member]
Organization and Description of Business [Line Items]
Number of properties owned	18
Asia [Member]
Organization and Description of Business [Line Items]
Number of properties owned	1

XML

Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Unsecured Senior Notes) (Details) (USD $) In Thousands, unless otherwise specified							9 Months Ended				9 Months Ended		9 Months Ended		9 Months Ended		9 Months Ended		9 Months Ended				9 Months Ended			9 Months Ended			9 Months Ended			9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 3.625% Notes Due 2022 [Member]	Sep. 30, 2011 3.625% Notes Due 2022 [Member]	Sep. 30, 2012 3.625% Notes Due 2022 [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2011 3.625% Notes Due 2022 [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Prudential Shelf Facility [Member] Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Prudential Shelf Facility [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Prudential Shelf Facility [Member] Series B [Member] Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Prudential Shelf Facility [Member] Series B [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Prudential Shelf Facility [Member] Series C [Member] Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Prudential Shelf Facility [Member] Series C [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Prudential Shelf Facility [Member] Series D [Member] Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Prudential Shelf Facility [Member] Series D [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Prudential Shelf Facility [Member] Series E [Member] Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Prudential Shelf Facility [Member] Series E [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Prudential Shelf Facility [Member] Series F [Member] Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Prudential Shelf Facility [Member] Series F [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Senior Notes [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Senior Notes [Member] 4.50% Notes Due 2015 [Member]	Sep. 30, 2012 Senior Notes [Member] 4.50% Notes Due 2015 [Member] Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Senior Notes [Member] 4.50% Notes Due 2015 [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Senior Notes [Member] 5.875% Notes Due 2020 [Member]	Sep. 30, 2012 Senior Notes [Member] 5.875% Notes Due 2020 [Member] Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Senior Notes [Member] 5.875% Notes Due 2020 [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Senior Notes [Member] 5.25% Notes Due 2021 [Member]	Sep. 30, 2012 Senior Notes [Member] 5.25% Notes Due 2021 [Member] Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Senior Notes [Member] 5.25% Notes Due 2021 [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Senior Notes [Member] 3.625% Notes Due 2022 [Member]	Sep. 30, 2012 Senior Notes [Member] 3.625% Notes Due 2022 [Member] Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate					3.625%	3.625%	3.625%	3.625%			9.32%		9.68%		4.57%		5.73%		4.50%			4.50%	4.50%		5.875%	5.875%		5.25%	5.25%		3.625%	3.625%
Maturity Date							Oct. 01, 2022				Nov. 05, 2013		Jan. 06, 2016		Jan. 20, 2015		Jan. 20, 2017		Feb. 03, 2015				Jul. 15, 2015			Feb. 01, 2020			Mar. 15, 2021			Oct. 01, 2022
Subtotal			$ 4,089,934						$ 175,000	$ 175,000	$ 33,000	$ 33,000	$ 25,000	$ 25,000	$ 50,000	$ 50,000	$ 50,000	$ 50,000	$ 17,000	$ 17,000	$ 1,575,000		$ 375,000	$ 375,000		$ 500,000	$ 500,000		$ 400,000	$ 400,000		$ 300,000
Unamortized discounts			(12,119)	(8,928)			(3,900)														(12,119)
Principal Outstanding (Senior notes)			1,562,881	1,266,072																	1,562,881
Unsecured senior notes, net of discount	$ 1,737,881	$ 1,441,072	$ 1,737,881	$ 1,441,072

XML

Debt Of The Company (Details)	9 Months Ended			9 Months Ended
	Sep. 30, 2012 3.625% Notes Due 2022 [Member]	Sep. 30, 2011 3.625% Notes Due 2022 [Member]	Dec. 31, 2011 Exchangeable Senior Debentures [Member]	Sep. 30, 2012 Exchangeable Senior Debentures [Member] 5.50% Exchangeable Senior Debentures Due 2029 [Member]	Sep. 30, 2012 Senior Notes [Member] 4.50% Notes Due 2015 [Member]	Sep. 30, 2012 Senior Notes [Member] 5.875% Notes Due 2020 [Member]	Sep. 30, 2012 Senior Notes [Member] 5.25% Notes Due 2021 [Member]	Sep. 30, 2012 Senior Notes [Member] 3.625% Notes Due 2022 [Member]
Debt Instrument [Line Items]
Interest rate	3.625%	3.625%	4.125%	5.50%	4.50%	5.875%	5.25%	3.625%
Maturity date	2022	2022		2029	2015	2020	2021	2022

XML

Equity And Accumulated Other Comprehensive Loss, Net (Schedule Of Accumulated Other Comprehensive Loss, Net) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps	$ 1,174	$ 1,293	$ 2,964	$ 4,467
Accumulated other comprehensive loss, net, Beginning balance			(55,880)
Accumulated other comprehensive loss, net, Ending balance	(24,524)		(24,524)
Foreign Currency Translation Adjustments [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments, Beginning balance			(49,298)
Foreign currency translation adjustments, Net current period change			35,053
Foreign currency translation adjustments, Ending balance	(14,245)		(14,245)
Cash Flow Hedge Adjustments [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Beginning balance			(6,582)
Cash flow hedge adjustment, Net current period change			(6,553)
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps			2,856
Cash flow hedge adjustments, Ending balance	(10,279)		(10,279)
Accumulated Other Comprehensive Loss, Net [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps			2,856
Accumulated other comprehensive loss, net, Beginning balance			(55,880)
Accumulated other comprehensive loss, net, Net current period change			28,500
Accumulated other comprehensive loss, net, Reclassification to interest expense from interest rate swaps			2,856
Accumulated other comprehensive loss, net, Ending balance	$ (24,524)		$ (24,524)

XML

Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Exchangeable Senior Debentures) (Details) (USD $) In Thousands, unless otherwise specified			9 Months Ended		12 Months Ended				9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2012 Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Exchangeable Senior Debentures [Member]	Sep. 30, 2012 Exchangeable Senior Debentures [Member] Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Exchangeable Senior Debentures [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Exchangeable Senior Debentures [Member] 5.50% Exchangeable Senior Debentures Due 2029 [Member]	Sep. 30, 2012 Exchangeable Senior Debentures [Member] 5.50% Exchangeable Senior Debentures Due 2029 [Member] Digital Realty Trust, L.P. [Member]		Dec. 31, 2011 Exchangeable Senior Debentures [Member] 5.50% Exchangeable Senior Debentures Due 2029 [Member] Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate					4.125%			5.50%	5.50%
Maturity Date					Aug. 15, 2026				Apr. 15, 2029	[1]
Exchangeable senior debentures net of discount	$ 266,400	$ 266,400	$ 266,400	$ 266,400		$ 266,400	$ 266,400		$ 266,400		$ 266,400
Purchase price/Redemption price percentage of debenture principal			100

[1] The holders of the debentures have the right to require the Operating Partnership to repurchase the debentures in cash in whole or in part for a price of 100% of the principal amount plus accrued and unpaid interest on each of April 15, 2014, April 15, 2019 and April 15, 2024. We have the right to redeem the debentures in cash for a price of 100% of the principal amount plus accrued and unpaid interest commencing on April 18, 2014.

XML

Incentive Plan (Restricted Stock) (Narrative) (Details) (Restricted Stock [Member], USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted			45,184	41,220
Service conditions of the awards			The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date provided the grantee continues employment on each anniversary date.
Vesting percentage, first and second anniversaries			20.00%
Vesting percentage, third and fourth anniversaries			30.00%
Restricted stock expense	$ 600,000	$ 500,000	$ 2,100,000	$ 1,500,000
Capitalized expense related to construction and leasing activities	600,000	400,000	1,500,000	1,100,000
Unearned compensation	$ 8,800,000		$ 8,800,000		$ 5,500,000
Unearned compensation, period of recognition			2 years 10 months 24 days
Service And Performance Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted			52,947	50,999
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years

XML

Acquired Intangible Assets And Liabilities (Summary Of Acquired Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Acquired in place lease value, Net	$ 492,393	$ 335,381
Acquired above market leases, Net	68,269	29,701
Acquired below market leases, Net	152,876	85,819
Acquired In Place Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired in place lease, Gross amount	708,968	545,409
Accumulated amortization	(351,596)	(312,499)
Acquired in place lease value, Net	357,372	232,910
Acquired Above-Market Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired above market leases, Gross amount	134,079	87,800
Accumulated amortization	(65,810)	(58,099)
Acquired above market leases, Net	68,269	29,701
Acquired Below-Market Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired below market leases, Gross amount	283,543	201,275
Accumulated amortization	(130,667)	(115,456)
Acquired below market leases, Net	$ 152,876	$ 85,819

XML

Equity And Accumulated Other Comprehensive Loss, Net (Tables)

9 Months Ended

Sep. 30, 2012

Equity And Accumulated Other Comprehensive Loss, Net [Abstract]

Ownership Interest In The Operating Partnership

	September 30, 2012			December 31, 2011
	Number of units	Percentage of total		Number of units	Percentage of total
Digital Realty Trust, Inc.	123,261,390	96.4	%	106,039,279	95.6	%
Noncontrolling interests consist of:
Common units held by third parties	3,131,814	2.4		3,405,814	3.0
Incentive units held by employees and    directors (see note 12)	1,494,254	1.2		1,530,316	1.4
	127,887,458	100.0	%	110,975,409	100.0	%

Summary Of Activity For Noncontrolling Interests In The Operating Partnership

	Common Units	Incentive Units	Total
As of December 31, 2011	3,405,814	1,530,316	4,936,130
Redemption of common units for shares of  Digital Realty Trust, Inc. common stock (1)	(274,000)	-	(274,000)
Conversion of incentive units held by employees and directors    for shares of Digital Realty Trust, Inc. common stock (1)	-	(186,192)	(186,192)
Cancellation of incentive units held by employees and directors	-	(15,950)	(15,950)
Grant of incentive units to employees and directors	-	166,080	166,080
As of September 30, 2012	3,131,814	1,494,254	4,626,068

(1) This redemption was recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid in capital based on the book value per unit in the accompanying condensed consolidated balance sheet of Digital Realty Trust, Inc.

Schedule Of Distributions

Date dividend declared	Dividend payable date	Series C Preferred Stock (1)(6)	Series D Preferred Stock (2)	Series E Preferred Stock (3)	Series F Preferred Stock (4)		Common Stock (5)
February 14, 2012	Mar. 30, 2012	$             1,402	$            2,398	$           5,031	$                  -		$        78,335
April 23, 2012	June 29, 2012	-	2,394	5,031	2,888	(7)	80,478
July 19, 2012	Sept. 28, 2012	-	1,723	5,031	3,023		89,679
		$             1,402	$            6,515	$         15,093	$           5,911		$      248,492

(1) $1.094 annual rate of dividend per share.

(2) $1.375 annual rate of dividend per share.

(3) $1.750 annual rate of dividend per share.

(4) $1.656 annual rate of dividend per share.

(5) $2.920 annual rate of dividend per share.

(6) Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% series C cumulative convertible preferred stock, or the series C preferred stock, into shares of its of common stock in accordance with the terms of the series C preferred stock. Each share of series C preferred stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.

(7) Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

Schedule Of Accumulated Other Comprehensive Loss, Net

	Foreign currency translation adjustments	Cash flow hedge adjustments	Accumulated other comprehensive loss, net
Balance as of December 31, 2011	$               (49,298)	$                 (6,582)	$               (55,880)
Net current period change	35,053	(6,553)	28,500
Reclassification to interest expense from interest rate swaps	-	2,856	2,856
Balance as of September 30, 2012	$               (14,245)	$               (10,279)	$               (24,524)

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Incentive Plan (Summary Of Incentive Award Plan's Stock Option) (Details) (USD $)	9 Months Ended
	Sep. 30, 2012
Incentive Plan [Abstract]
Options outstanding, beginning of period, Shares	337,760
Exercised, Shares	(207,550)
Cancelled / Forfeited, Shares	(301)
Options outstanding, end of period, Shares	129,909
Exercisable, end of period, Shares	129,909
Options outstanding, beginning of period, Weighted average exercise price	$ 24.17
Exercised, Weighted average exercise price	$ 20.11
Cancelled / Forfeited, Weighted average exercise price	$ 41.73
Options outstanding, end of period, Weighted average exercise price	$ 30.62
Exercisable, end of period, Weighted average exercise price	$ 30.62

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Capital And Comprehensive Income (Schedule Of Accumulated Other Comprehensive Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps	$ 1,174	$ 1,293	$ 2,964	$ 4,467
Accumulated other comprehensive loss, net, Beginning balance			(55,880)
Accumulated other comprehensive loss, net, Ending balance	(24,524)		(24,524)
Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps	1,174	1,293	2,964	4,467
Accumulated other comprehensive loss, net, Beginning balance			(60,063)
Accumulated other comprehensive loss, net, Ending balance	(27,611)		(27,611)
Foreign Currency Translation Adjustments [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments, Beginning balance			(49,298)
Foreign currency translation adjustments, Net current period change			35,053
Foreign currency translation adjustments, Ending balance	(14,245)		(14,245)
Foreign Currency Translation Adjustments [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments, Beginning balance			(52,704)
Foreign currency translation adjustments, Net current period change			36,286
Foreign currency translation adjustments, Ending balance	(16,418)		(16,418)
Cash Flow Hedge Adjustments [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Beginning balance			(6,582)
Cash flow hedge adjustment, Net current period change			(6,553)
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps			2,856
Cash flow hedge adjustments, Ending balance	(10,279)		(10,279)
Cash Flow Hedge Adjustments [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Beginning balance			(7,363)
Cash flow hedge adjustment, Net current period change			(6,796)
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps			2,964
Cash flow hedge adjustments, Ending balance	(11,195)		(11,195)
Accumulated Other Comprehensive Loss, Net [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Cash flow hedge adjustment, Reclassification to interest expense from interest rate swaps			2,856
Accumulated other comprehensive loss, net, Beginning balance			(55,880)
Accumulated other comprehensive loss, net, Net current period change			28,500
Accumulated other comprehensive loss, net, Reclassification to interest expense from interest rate swaps			2,856
Accumulated other comprehensive loss, net, Ending balance	(24,524)		(24,524)
Accumulated Other Comprehensive Loss, Net [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss, net, Beginning balance			(60,067)
Accumulated other comprehensive loss, net, Net current period change			29,490
Accumulated other comprehensive loss, net, Reclassification to interest expense from interest rate swaps			2,964
Accumulated other comprehensive loss, net, Ending balance	$ (27,613)		$ (27,613)

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Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Other Secured Loan) (Details) (USD $)					9 Months Ended				3 Months Ended	9 Months Ended
	Dec. 31, 2011	Sep. 30, 2012 Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Other Secured Loans [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Other Secured Loans [Member] 2805 Lafayette Street Mezzanine [Member] Digital Realty Trust, L.P. [Member]		Dec. 31, 2011 Other Secured Loans [Member] 2805 Lafayette Street Mezzanine [Member] Digital Realty Trust, L.P. [Member]		Sep. 30, 2012 Mortgage Loans And Other Secured Debt [Member] 2805 Lafayette Street And 2805 Lafayette Street Mezzanine [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 Mortgage Loans And Other Secured Debt [Member] 2805 Lafayette Street And 2805 Lafayette Street Mezzanine [Member] Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Variable Rate Basis					1-month LIBOR + 8.50%	[1],[2]
Basis spread on variable rate					8.50%
Maturity Date					Jun. 09, 2013	[1],[2]
Other secured loan	$ 10,500,000		$ 10,500,000	$ 10,500,000			$ 10,500,000	[1],[2]
Total indebtedness		4,080,073,000	2,940,210,000
Net loss from early extinguishment of debt									$ 300,000	$ 300,000

[1] The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.

[2] Property formerly referred to as 800 Central Expressway.

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Incentive Plan (Class C Profits Interest Units) (Narrative) (Details) (USD $)	0 Months Ended	3 Months Ended		9 Months Ended
	May 01, 2010	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, shares outstanding		123,261,390		123,261,390		106,039,279
Class C Profit Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards satisfying market conditions on measurement date	593,316
Vesting based on market conditions with respect to the first measurement date not achieved				Of the Class C Units that satisfied the market condition on May 1, 2010, 60% vested on May 1, 2010 and the remaining 40% will vest ratably each month thereafter for 24 months.
Award vesting percentage, vested	60.00%
Award vesting percentage, unvested	40.00%
Award vesting, expected term	24 months
Approximate number of times simulation was run				100,000
Expected term				36 months
Expected volatility rate				23.00%
Risk-free interest rate				4.60%
Expected dividend rate				5.00%
Award limit, first market condition				$ 17,000,000
Award limit, second market condition				40,000,000
Common Stock, shares outstanding		69,200,000		69,200,000
Grant date fair value of awards				11,800,000
Requisite service period of share-based award				5 years
Unearned compensation		0		0		600,000
Stock option expense		0	700,000	500,000	1,600,000
Capitalized expense related to construction and leasing activities		0	100,000	100,000	200,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards satisfying market conditions on measurement date	20,169
Vesting based on market conditions with respect to the first measurement date not achieved				The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date provided the grantee continues employment on each anniversary date.
Unearned compensation		8,800,000		8,800,000		5,500,000
Capitalized expense related to construction and leasing activities		$ 600,000	$ 400,000	$ 1,500,000	$ 1,100,000

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Derivative Instruments (Details) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011	Sep. 30, 2012		Sep. 30, 2011	Dec. 31, 2011
Derivative [Line Items]
Lender accelerated indebtedness repayment threshold amount	$ 75,000,000			$ 75,000,000
Fair value of effective cash flow hedges	9,400,000			9,400,000			5,500,000
Ineffective portion of cash flow hedges	0		0	0		0
Reclassified as increase to interest expense				6,300,000
Notional Amount	703,920,000			703,920,000			246,973,000
Fair Value at Significant Other Observable Inputs (Level 2)	(9,358,000)			(9,358,000)			(5,484,000)
Termination date				January 2012
GBP [Member]
Derivative [Line Items]
Exchange rate	1.62			1.62			1.55
EUR [Member]
Derivative [Line Items]
Exchange rate	1.29			1.29			1.30
SGD [Member]
Derivative [Line Items]
Exchange rate	0.81			0.81
Swap 1 [Member]
Derivative [Line Items]
Notional Amount	69,235,000	[1]		69,235,000	[1]		66,563,000	[1]
Type of Derivative				Swap
Strike Rate	2.980			2.980
Effective Date				Apr. 06, 2009
Expiration Date				Nov. 30, 2013
Fair Value at Significant Other Observable Inputs (Level 2)	(1,970,000)			(1,970,000)			(2,363,000)
Swap 2 [Member]
Derivative [Line Items]
Notional Amount	13,053,000	[2]		13,053,000	[2]		13,319,000	[2]
Type of Derivative				Swap
Strike Rate	3.981			3.981
Effective Date				May 17, 2006
Expiration Date				Jul. 18, 2013
Fair Value at Significant Other Observable Inputs (Level 2)	(387,000)			(387,000)			(583,000)
Swap 3 [Member]
Derivative [Line Items]
Notional Amount	9,444,000	[2]		9,444,000	[2]		9,636,000	[2]
Type of Derivative				Swap
Strike Rate	4.070			4.070
Effective Date				Jun. 23, 2006
Expiration Date				Jul. 18, 2013
Fair Value at Significant Other Observable Inputs (Level 2)	(287,000)			(287,000)			(435,000)
Swap 4 [Member]
Derivative [Line Items]
Notional Amount	8,312,000	[2]		8,312,000	[2]		8,480,000	[2]
Type of Derivative				Swap
Strike Rate	3.989			3.989
Effective Date				Jul. 27, 2006
Expiration Date				Oct. 18, 2013
Fair Value at Significant Other Observable Inputs (Level 2)	(324,000)			(324,000)			(432,000)
Swap 5 [Member]
Derivative [Line Items]
Notional Amount							39,483,000	[2]
Type of Derivative				Swap
Strike Rate	3.776			3.776
Effective Date				Dec. 05, 2006
Expiration Date				Jan. 18, 2012	[3]
Fair Value at Significant Other Observable Inputs (Level 2)							(41,000)
Swap 6 [Member]
Derivative [Line Items]
Notional Amount							33,946,000	[2]
Type of Derivative				Swap
Strike Rate	4.000			4.000
Effective Date				Dec. 20, 2006
Expiration Date				Jan. 18, 2012	[3]
Fair Value at Significant Other Observable Inputs (Level 2)							(38,000)
Swap 7 [Member]
Derivative [Line Items]
Notional Amount	38,580,000	[2]		38,580,000	[2]		38,883,000	[2]
Type of Derivative				Swap
Strike Rate	2.703			2.703
Effective Date				Dec. 03, 2009
Expiration Date				Sep. 04, 2014
Fair Value at Significant Other Observable Inputs (Level 2)	(1,773,000)			(1,773,000)			(1,592,000)
Swap 8 [Member]
Derivative [Line Items]
Notional Amount	410,905,000	[4]		410,905,000	[4]
Type of Derivative				Swap
Strike Rate	0.717			0.717
Effective Date Description				Various
Expiration Date Description				Various
Fair Value at Significant Other Observable Inputs (Level 2)	(4,063,000)			(4,063,000)
Swap 9 [Member]
Derivative [Line Items]
Notional Amount	154,391,000	[5]		154,391,000	[5]
Type of Derivative				Swap
Strike Rate	0.925			0.925
Effective Date				Jul. 06, 2012
Expiration Date				Apr. 18, 2017	[6]
Fair Value at Significant Other Observable Inputs (Level 2)	(554,000)			(554,000)
Cap 1 [Member]
Derivative [Line Items]
Notional Amount							16,163,000
Type of Derivative				Cap
Strike Rate	4.000			4.000
Effective Date				Jun. 24, 2009
Expiration Date				Jun. 25, 2012	[6]
Termination date				April 27, 2012
Date paid in full				Apr. 26, 2012
Cap 2 [Member]
Derivative [Line Items]
Notional Amount							$ 20,500,000
Type of Derivative				Cap
Strike Rate	4.000			4.000
Effective Date				Aug. 04, 2010
Expiration Date				Jun. 15, 2013	[7]
Termination date				May 9, 2012
Date paid in full				May 04, 2012

[1] Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.

[2] Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.

[3] The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.

[4] Represents the U.S. Dollar tranche of the unsecured term loan.

[5] Represents the Singapore Dollar tranche of the unsecured term loan. Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.

[6] This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.

[7] This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.

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Incentive Plan (Stock Options) (Narrative) (Details) (Potentially Dilutive Outstanding Stock Options [Member], USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option expense	$ 0	$ 200,000	$ 200,000	$ 700,000
Capitalized expense related to construction and leasing activities	0	100,000	100,000	200,000
Unearned compensation	$ 0		$ 0		$ 300,000
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			5 years

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Capital And Comprehensive Income (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2011
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Acquisition amount	$ 1,462.2
Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Redemption value of common units	290.1		291.5
Series F Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred stock, issued	7,300,000		0
Preferred stock, dividend rate	6.625%		6.625%
Preferred stock dividend per share amount	$ 1.656	$ 1.65625
Preferred stock, liquidation preference per share/unit	$ 25.00		$ 25.00
Series F Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Preferred stock, dividend rate	6.625%		6.625%
Preferred stock dividend per share amount	$ 1.656
Preferred stock, liquidation preference per share/unit	$ 25.00		$ 25.00
April 5, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date	Apr. 05, 2012
Preferred stock, issued	7,300,000
Preferred stock, dividend rate	6.625%
Preferred stock dividend per share amount	$ 1.65625
Preferred stock, liquidation preference per share/unit	$ 25.00
Preferred stock, distribution payable date	Jun. 29, 2012
Preferred stock, dividends in arrears	$ 0.395660
Preferred stock, redemption date	Apr. 05, 2017
Redemption price	$ 25.00
April 5, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date	Apr. 05, 2012
Preferred stock, issued	7,300,000
Preferred stock, dividend rate	6.625%
Preferred stock dividend per share amount	$ 1.65625
Preferred stock, liquidation preference per share/unit	$ 25.00
Preferred stock, distribution payable date	Jun. 29, 2012
Preferred stock, dividends in arrears	$ 0.39566
Preferred stock, redemption date	Apr. 05, 2017
Redemption price	$ 25.00
April 18, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date	Apr. 18, 2012
Preferred stock, issued	7,300,000
Preferred stock, dividend rate	6.625%
Preferred stock dividend per share amount	$ 1.656250
Preferred stock, liquidation preference per share/unit	$ 25.00
Preferred stock, distribution payable date	Jun. 29, 2012
Preferred stock, dividends in arrears	$ 0.395660
Preferred stock, redemption date	Apr. 05, 2017
Redemption price	$ 25.00
April 18, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Issuance date	Apr. 18, 2012
Preferred stock, issued	7,300,000
Preferred stock, dividend rate	6.625%
Preferred stock dividend per share amount	$ 1.656250
Preferred stock, liquidation preference per share/unit	$ 25.00
Preferred stock, distribution payable date	Jun. 29, 2012
Preferred stock, dividends in arrears	$ 0.395660
Preferred stock, redemption date	Apr. 05, 2017
Redemption price	$ 25.00
Noncontrolling Interests In Consolidated Joint Ventures [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date of acquisition	May 04, 2012
Acquisition amount	12.4
Noncontrolling Interests In Consolidated Joint Ventures [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date of acquisition	May 04, 2012
Acquisition amount	$ 12.4

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Commitments And Contingencies

9 Months Ended

Sep. 30, 2012

Commitments And Contingencies

16. Commitments and Contingencies

We have agreed with the seller of 350 East Cermak Road to share a portion, not to exceed $135,000 per month, of rental revenue, adjusted for our costs to lease the premises, from the leases of the 192,000 square feet of space held for redevelopment. This revenue sharing agreement terminated in May 2012. We made payments of approximately $0.7 million and $1.2 million to the seller during the nine months ended September 30, 2012 and 2011, respectively.

As part of the acquisition of 29A International Business Park, the seller could earn additional consideration based on future net operating income growth in excess of certain performance targets, as defined. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to purchase would cause an amount to become probable of payment and therefore no amount is accrued as of September 30, 2012. The maximum amount that could be earned by the seller is $50.0 million SGD (or approximately $40.7 million based on the exchange rate as of September 30, 2012). The earnout contingency expires in November 2020.  

One of the tenants at our Convergence Business Park property has an option to expand as part of their lease agreement, which expires in April 2017. As part of this option, development activities are not permitted on specifically identified expansion space within the property until April 2014. If the tenant elects to take this option, we can elect one of two options. The first option is to construct and develop an additional shell building on the expansion space. Concurrent with this obligation, the tenant would execute an amendment to the existing lease to reflect the expansion of the space and include the additional shell building. The second option is to sell the existing building and the expansion space to the tenant for a price of approximately $24.0 million and $225,000 per square acre, respectively, plus additional adjustments as provided in the lease.

As part of the acquisition of the noncontrolling interest in the entity that owns 2805 Lafayette Street from our joint venture partner, the partner could earn additional consideration if between May 4, 2012 and January 31, 2013, we enter into a qualifying lease for this property, as defined in the agreement. As of September 30, 2012, no leases were executed for this property that would cause an amount to become probable of payment and therefore, no amount is accrued as of September 30, 2012.

As part of the acquisition of the Sentrum Portfolio, the seller could earn additional consideration based on future net returns on vacant space to be redeveloped, but not currently leased, as defined in the purchase agreement for the acquisition. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to the purchase date would cause an amount to become probable of payment. The expected fair value of the contingent consideration as of September 30, 2012 that could be earned by the seller is £56.5 million (or approximately $91.3 million based on the exchange rate as of September 30, 2012) and is currently accrued in accounts payable and other accrued expenses in the condensed consolidated balance sheet. The earn-out contingency expires in July 2015.  This amount will be reassessed on a quarterly basis.

Our properties require periodic investments of capital for tenant-related capital expenditures and for general capital improvements and from time to time in the normal course of our business, we enter into various construction contracts with third parties that may obligate us to make payments. At September 30, 2012, we had open commitments related to construction contracts of approximately $187.3 million.   

Digital Realty Trust, L.P. [Member]

Commitments And Contingencies

16. Commitments and Contingencies

We have agreed with the seller of 350 East Cermak Road to share a portion, not to exceed $135,000 per month, of rental revenue, adjusted for our costs to lease the premises, from the leases of the 192,000 square feet of space held for redevelopment. This revenue sharing agreement terminated in May 2012. We made payments of approximately $0.7 million and $1.2 million to the seller during the nine months ended September 30, 2012 and 2011, respectively.

As part of the acquisition of 29A International Business Park, the seller could earn additional consideration based on future net operating income growth in excess of certain performance targets, as defined. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to purchase would cause an amount to become probable of payment and therefore no amount is accrued as of September 30, 2012. The maximum amount that could be earned by the seller is $50.0 million SGD (or approximately $40.7 million based on the exchange rate as of September 30, 2012). The earnout contingency expires in November 2020.  

One of the tenants at our Convergence Business Park property has an option to expand as part of their lease agreement, which expires in April 2017. As part of this option, development activities are not permitted on specifically identified expansion space within the property until April 2014. If the tenant elects to take this option, we can elect one of two options. The first option is to construct and develop an additional shell building on the expansion space. Concurrent with this obligation, the tenant would execute an amendment to the existing lease to reflect the expansion of the space and include the additional shell building. The second option is to sell the existing building and the expansion space to the tenant for a price of approximately $24.0 million and $225,000 per square acre, respectively, plus additional adjustments as provided in the lease.

As part of the acquisition of the noncontrolling interest in the entity that owns 2805 Lafayette Street from our joint venture partner, the partner could earn additional consideration if between May 4, 2012 and January 31, 2013, we enter into a qualifying lease for this property, as defined in the agreement. As of September 30, 2012, no leases were executed for this property that would cause an amount to become probable of payment and therefore, no amount is accrued as of September 30, 2012.

As part of the acquisition of the Sentrum Portfolio, the seller could earn additional consideration based on future net returns on vacant space to be redeveloped, but not currently leased, as defined in the purchase agreement for the acquisition. As of September 30, 2012, construction is not complete and none of the leases executed subsequent to the purchase date would cause an amount to become probable of payment. The expected fair value of the contingent consideration as of September 30, 2012 that could be earned by the seller is £56.5 million (or approximately $91.3 million based on the exchange rate as of September 30, 2012) and is currently accrued in accounts payable and other accrued expenses in the condensed consolidated balance sheet. The earn-out contingency expires in July 2015.  This amount will be reassessed on a quarterly basis.

Our properties require periodic investments of capital for tenant-related capital expenditures and for general capital improvements and from time to time in the normal course of our business, we enter into various construction contracts with third parties that may obligate us to make payments. At September 30, 2012, we had open commitments related to construction contracts of approximately $187.3 million.   

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Debt Of The Operating Partnership (Unsecured Term Loan) (Narrative) (Details) (Unsecured Term Loan [Member], Digital Realty Trust, L.P. [Member], USD $)	1 Months Ended	9 Months Ended
	Jul. 31, 2012	Sep. 30, 2012
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Credit facility, initiation date		Apr. 17, 2012
Credit facility, maximum borrowing capacity		$ 750,000,000
Maturity date		Apr. 16, 2017
Senior unsecured debt basis spread on variable rate		145
Delay draw available from date of close		250,000,000
Additional amount borrowed during the month	225,000,000
Balance/Principal Outstanding		754,935,000	[1]
Capitalized financing costs		$ 5,300,000

[1] (4) Balances as of September 30, 2012 are as follows (balances, in thousands): Denomination of Draw Balance as of September 30, 2012 Weighted-average
interest rate U.S. Dollar ($) $ 410,905 1.67 % Singapore Dollar (SGD) 154,391 (a) 1.81 % British Pound Sterling (£) 90,697 (a) 1.97 % Euro (€) 63,657 (a) 1.57 % Australian Dollar (AUD) 35,285 (a) 5.03 % $ 754,935 1.89 % (a) Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

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Investments In Real Estate (Schedule Of Real Estate Property Acquisitions) (Details) In Millions, unless otherwise specified			9 Months Ended							0 Months Ended		9 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2012 GBP (£)	Sep. 30, 2012 Convergence Business Park [Member] USD ($) property		Sep. 30, 2012 9333, 9355, 9377 Grand Avenue [Member] USD ($) property		Sep. 30, 2012 8025 North Interstate 35 [Member] USD ($)		Sep. 30, 2012 400 S. Akard Street [Member] USD ($)	Jul. 11, 2012 Sentrum Portfolio [Member] USD ($) property sqft	Jul. 11, 2012 Sentrum Portfolio [Member] GBP (£)	Sep. 30, 2012 Sentrum Portfolio [Member] USD ($)		Sep. 30, 2012 11900 East Cornell Avenue [Member] USD ($)
Business Acquisition [Line Items]
Acquisition, Metropolitan Area			Dallas, Texas	[1]	Chicago, Illinois	[2]	Austin, Texas	[3]	Dallas, Texas			London, England	[4]	Denver, Colorado
Acquisition, Amount	$ 1,462.2		$ 123.0	[1]	$ 22.3	[2]	$ 12.5	[3]	$ 75.0	$ 1,100.0	£ 734.6	$ 1,138.6	[4]	$ 90.8
Number of buildings			9		3
Number of properties			1		1					3	3
Secured mortgage loan assumed in acquisition							6.7
Acquisition, Date Acquired			Feb. 22, 2012	[1]	May 10, 2012	[2]	May 18, 2012	[3]	Jun. 13, 2012	Jul. 11, 2012	Jul. 11, 2012	Jul. 11, 2012	[4]	Sep. 14, 2012
Square footage of real estate property										733,000	733,000
Exchange rate										1.55	1.55
Adjustment to purchase price										29.0	18.7
Expected fair value of contingent consideration	91.3	56.5								87.6	56.5
Purchase adjustment related to deferred taxes										$ 106.3	£ 68.6

[1] Convergence Business Park is comprised of nine buildings along with undeveloped land. It is considered one property for our property count.

[2] 9333, 9355, 9377 Grand Avenue is comprised of three buildings. It is considered one property for our property count.

[3] In connection with the acquisition, we assumed a $6.7 million secured mortgage loan.

[4] On July 11, 2012, we completed the acquisition of a three-property data center portfolio, totaling approximately 733,000 square feet, located in the greater London area, referred to as the Sentrum Portfolio. The purchase price was £734.6 million (equivalent to approximately $1.1 billion based on the July 11, 2012 exchange rate of £1.00 to $1.55), which includes an £18.7 million (equivalent to approximately $29.0 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) adjustment in the purchase price to reflect amounts associated with the early repayment of property debt. In addition, non-cash consideration of £56.5 million (or $87.6 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) was recorded as the expected fair value of contingent consideration as required by prevailing accounting guidance. There was also a non-cash purchase adjustment related to deferred taxes, which amounted to £68.6 million (or $106.3 million based on the July 11, 2012 exchange rate of £1.00 to $1.55). The purchase price was paid in cash funded with proceeds from our common stock offering in July 2012 along with borrowings under our global revolving credit facility.

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Incentive Plan (Long-Term Incentive Units) (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term incentive units granted			166,080
Long-Term Incentive Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term incentive units granted			79,237	85,910
Service conditions of the awards			The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date, provided the grantee continues employment on each anniversary date.
Vesting percentage, first and second anniversaries			20.00%
Vesting percentage, third and fourth anniversaries			30.00%
Share/unit compensation expense	$ 2,100,000	$ 2,200,000	$ 7,200,000	$ 6,600,000
Capitalized expense related to construction and leasing activities	400,000	200,000	800,000	600,000
Unearned compensation	$ 15,400,000		$ 15,400,000		$ 12,700,000
Unearned compensation, period of recognition			2 years 8 months 12 days
Service And Performance Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Long-term incentive units granted			86,843	98,632
Minimum [Member] | Long-Term Incentive Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			3 years
Maximum [Member] | Long-Term Incentive Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			5 years

XML

Fair Value Of Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Estimated Fair Value And Carrying Amounts

	As of September 30, 2012		As of December 31, 2011
	Estimated Fair Value	Carrying Value	Estimated Fair Value	Carrying Value
Global revolving credit facility (1)	$                  526,372	$          526,372	$                  275,106	$          275,106
Unsecured term loan (2)	754,935	754,935	-	-
Unsecured senior notes (3)(4)	1,923,854	1,737,881	1,502,271	1,441,072
Exchangeable senior debentures (3)	460,347	266,400	438,327	266,400
Mortgage loans (3)	850,356	794,485	1,007,615	947,132
Other secured loan (3)	-	-	10,688	10,500
	$               4,515,864	$       4,080,073	$               3,234,007	$       2,940,210

(1)	The carrying value of our global revolving credit facility approximates estimated fair value, due to the short-term nature of this instrument along with the variability of interest rates.
(2)	The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates.

(3) Valuations for our unsecured senior notes, mortgage loans and other secured loan are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes and exchangeable senior debentures are valued based on quoted market prices.

(4) The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes are net of discount of $12,119 and $8,928 in the aggregate as of September 30, 2012 and December 31, 2011, respectively.

Digital Realty Trust, L.P. [Member]

Estimated Fair Value And Carrying Amounts

	As of September 30, 2012		As of December 31, 2011
	Estimated Fair Value	Carrying Value	Estimated Fair Value	Carrying Value
Global revolving credit facility (1)	$                  526,372	$          526,372	$                  275,106	$          275,106
Unsecured term loan (2)	754,935	754,935	-	-
Unsecured senior notes (3)(4)	1,923,854	1,737,881	1,502,271	1,441,072
Exchangeable senior debentures (3)	460,347	266,400	438,327	266,400
Mortgage loans (3)	850,356	794,485	1,007,615	947,132
Other secured loan (3)	-	-	10,688	10,500
	$               4,515,864	$       4,080,073	$               3,234,007	$       2,940,210

(1)	The carrying value of our global revolving credit facility approximates estimated fair value, due to the short-term nature of this instrument along with the variability of interest rates.
(2)	The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates.

(3) Valuations for our unsecured senior notes, mortgage loans and other secured loan are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes and exchangeable senior debentures are valued based on quoted market prices.

(4) The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes are net of discount of $12,119 and $8,928 in the aggregate as of September 30, 2012 and December 31, 2011, respectively.

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Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Global Revolving Credit Facility) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012		Dec. 31, 2011
Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Revolving credit facilities interest rates	Various	[1]
Maturity Date	Nov. 03, 2015
Balance/Principal Outstanding	$ 526,372	[2]	$ 275,106	[2]
Revolving credit facility basis spread on variable rate	125
Basis rate for unused portion of the credit facility	25
Weighted-average interest rate	1.99%		1.67%
USD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding			194,000
Weighted-average interest rate	0.00%		1.54%
Exchange rate	1.62		1.55
EUR [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	1.29		1.30
GBP [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	1.62		1.55
GBP [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	447,018	[3]	49,892	[4]
Weighted-average interest rate	1.79%		1.99%
SGD [Member]
Debt of the Operating Partnership [Line Items]
Exchange rate	0.81
SGD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	21,183	[3]	28,151	[4]
Weighted-average interest rate	1.56%		1.56%
Exchange rate	0.81		0.77
AUD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	39,021	[3]	3,063	[4]
Weighted-average interest rate	4.83%		5.89%
Exchange rate	1.04		1.02
HKD [Member] | Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Balance/Principal Outstanding	$ 19,150	[3]
Weighted-average interest rate	1.55%
Exchange rate	0.13

[1] The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 125 basis points which is based on the credit rating of our long-term debt. An annual facility fee of 25 basis points, which is based on the credit rating of our long-term debt, is due and payable quarterly on the unused portion of the facility.

[2] 2) Balances as of September 30, 2012 and December 31, 2011 are as follows (balances, in thousands): Denomination of Draw Balance as of September 30, 2012 Weighted-average interest rate Balance as of December 31, 2011 Weighted-average interest rate US ($) $ - 0.00% $ 194,000 1.54% British Sterling (£) 447,018 (a) 1.79% 49,892 (b) 1.99% Singapore Dollar (SGD) 21,183 (a) 1.56% 28,151 (b) 1.56% Australian Dollar (AUD) 39,021 (a) 4.83% 3,063 (b) 5.89% Hong Kong Dollar (HKD) 19,150 (a) 1.55% - - Total $ 526,372 1.99% $ 275,106 1.67% (a) Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012. (b) Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

[3] Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.

[4] Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

XML

Equity And Accumulated Other Comprehensive Loss, Net (Ownership Interest In The Operating Partnership) (Details)	Sep. 30, 2012	Dec. 31, 2011
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Partners' capital account units	123,261,390	106,039,279
Percentage of total	96.40%	95.60%
Common Units Held By Third Parties [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Common units held by third parties	3,131,814	3,405,814
Percentage of total	2.40%	3.00%
Incentive Units Held By Employees And Directors [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Incentive units held by employees and directors	1,494,254	1,530,316
Percentage of total	1.20%	1.40%
Noncontrolling Interests In Operating Partnership [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Partners' capital account units	127,887,458	110,975,409
Percentage of total	100.00%	100.00%

XML

Income Per Share (Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	21,863,563	19,237,146	21,504,743	20,890,149
Weighted Average Of Operating Partnership Common Units Not Owned By Us [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,345,574	4,481,045	4,346,586	4,708,129
Potentially Dilutive 2029 Debentures [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	6,514,812	6,368,292	6,471,282	6,309,599
Potentially Dilutive Series C Cumulative Convertible Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities		2,783,811	1,087,398	3,097,084
Potentially Dilutive Series D Cumulative Convertible Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,219,384	5,603,998	4,309,978	6,775,337
Potentially Dilutive Series E Cumulative Redeemable Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,151,146		4,045,501
Potentially Dilutive Series F Cumulative Redeemable Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	2,632,647		1,243,998

XML

Acquired Intangible Assets And Liabilities (Schedule Of Estimated Annual Amortization Of Leases) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012
Acquired Below-Market Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
2013	$ 11,091
2014	9,161
2015	8,044
2016	7,137
2017	5,613
Acquired In Place Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
2013	57,995
2014	52,791
2015	44,109
2016	41,653
2017	$ 26,947

XML

Condensed Consolidated Statements Of Cash Flows (Parenthetical)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
5.250% Due 2021 [Member]
Interest rate	5.25%	5.25%
Maturity date	2021	2021
5.250% Due 2021 [Member] | Digital Realty Trust, L.P. [Member]
Interest rate	5.25%	5.25%
Maturity date	2021	2021
3.625% Notes Due 2022 [Member]
Interest rate	3.625%	3.625%
Maturity date	2022	2022
3.625% Notes Due 2022 [Member] | Digital Realty Trust, L.P. [Member]
Interest rate	3.625%	3.625%
Maturity date	2022	2022

XML

Income Per Unit (Narrative) (Details)	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011 Digital Realty Trust, L.P. [Member]
Shares of common stock contingently issuable	494,292	494,292

XML

Investments In Real Estate (Summary Of Acquired Intangible Assets And Liabilities Expected Weighted Average Useful Lives) (Details)	9 Months Ended
	Sep. 30, 2012
Acquired In Place Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	7 years 4 months 24 days
Acquired Above-Market Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	5 years 9 months 18 days
Acquired Below-Market Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	7 years 6 months
Sentrum Portfolio [Member] | Acquired In Place Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	11 years 6 months
Sentrum Portfolio [Member] | Acquired Above-Market Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	7 years 3 months 18 days
Sentrum Portfolio [Member] | Acquired Below-Market Lease Value [Member]
Business Acquisition [Line Items]
Expected weighted average remaining lives of acquired intangible assets and liabilities (years)	11 years

XML

Acquired Intangible Assets And Liabilities (Tables)

9 Months Ended

Sep. 30, 2012

Finite-Lived Intangible Assets [Line Items]

Summary Of Acquired Intangible Assets

	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)
Net	$	357,372		$	232,910
Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)
Net	$	68,269		$	29,701
Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)
Net	$	152,876		$	85,819

Digital Realty Trust, L.P. [Member]

Finite-Lived Intangible Assets [Line Items]

Summary Of Acquired Intangible Assets

	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)
Net	$	357,372		$	232,910
Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)
Net	$	68,269		$	29,701
Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)
Net	$	152,876		$	85,819

Acquired Below-Market Lease Value [Member]

Finite-Lived Intangible Assets [Line Items]

Schedule Of Estimated Annual Amortization Of Leases

(Amounts in thousands)
2013	$	11,091
2014		9,161
2015		8,044
2016		7,137
2017		5,613

Acquired Below-Market Lease Value [Member] | Digital Realty Trust, L.P. [Member]

Finite-Lived Intangible Assets [Line Items]

Schedule Of Estimated Annual Amortization Of Leases

(Amounts in thousands)
2013	$	11,091
2014		9,161
2015		8,044
2016		7,137
2017		5,613

Acquired In Place Lease Value [Member]

Finite-Lived Intangible Assets [Line Items]

Schedule Of Estimated Annual Amortization Of Leases

(Amounts in thousands)
2013	$	57,995
2014		52,791
2015		44,109
2016		41,653
2017		26,947

Acquired In Place Lease Value [Member] | Digital Realty Trust, L.P. [Member]

Finite-Lived Intangible Assets [Line Items]

Schedule Of Estimated Annual Amortization Of Leases

(Amounts in thousands)
2013	$	57,995
2014		52,791
2015		44,109
2016		41,653
2017		26,947

XML

Investments In Real Estate (Tables)

9 Months Ended

Sep. 30, 2012

Business Acquisition [Line Items]

Schedule Of Real Estate Property Acquisitions

Location	Metropolitan Area	Date Acquired	Amount (in millions)
Convergence Business Park (1)	Dallas, Texas	February 22, 2012	$              123.0
9333, 9355, 9377 Grand Avenue (2)	Chicago, Illinois	May 10, 2012	22.3
8025 North Interstate 35 (3)	Austin, Texas	May 18, 2012	12.5
400 S. Akard Street	Dallas, Texas	June 13, 2012	75.0
Sentrum Portfolio (4)	London, England	July 11, 2012	1,138.6
11900 East Cornell Avenue	Denver, Colorado	September 14, 2012	90.8
			$           1,462.2

(1) Convergence Business Park is comprised of nine buildings along with undeveloped land. It is considered one property for our property count.

(2) 9333, 9355, 9377 Grand Avenue is comprised of three buildings. It is considered one property for our property count.

(3) In connection with the acquisition, we assumed a $6.7 million secured mortgage loan.

(4)    On July 11, 2012, we completed the acquisition of a three-property data center portfolio, totaling approximately 733,000 square feet, located in the greater London area, referred to as the Sentrum Portfolio. The purchase price was £734.6 million (equivalent to approximately $1.1 billion based on the July 11, 2012 exchange rate of £1.00 to $1.55), which includes an £18.7 million (equivalent to approximately $29.0 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) adjustment in the purchase price to reflect amounts associated with the early repayment of property debt.  In addition, non-cash consideration of £56.5 million (or $87.6 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) was recorded as the expected fair value of contingent consideration as required by prevailing accounting guidance.  There was also a non-cash purchase adjustment related to deferred taxes, which amounted to £68.6 million (or $106.3 million based on the July 11, 2012 exchange rate of £1.00 to $1.55).  The purchase price was paid in cash funded with proceeds from our common stock offering in July 2012 along with borrowings under our global revolving credit facility.

Summary Of Acquired Intangible Assets And Liabilities Expected Weighted Average Useful Lives

	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)
Net	$	357,372		$	232,910
Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)
Net	$	68,269		$	29,701
Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)
Net	$	152,876		$	85,819

Schedule Of Pro Forma Operating Revenues And Operating Income

	Three months ended				Nine months ended
	Operating Revenues		Operating Income		Operating Revenues		Operating Income
	(in millions)				(in millions)
Supplemental pro forma for the periods ended September 30, 2012(1)	$	345.9	$	98.4	$	995.9	$	297.8
Supplemental pro forma for the periods ended September 30, 2011(1)		305.4		84.1		887.1		260.5

⁽¹⁾ These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisition occurred on January 1, 2011, and may not be indicative of future operating results. The pro forma results exclude transaction expenses.

Digital Realty Trust, L.P. [Member]

Business Acquisition [Line Items]

Schedule Of Real Estate Property Acquisitions

Location	Metropolitan Area	Date Acquired	Amount (in millions)
Convergence Business Park (1)	Dallas, Texas	February 22, 2012	$              123.0
9333, 9355, 9377 Grand Avenue (2)	Chicago, Illinois	May 10, 2012	22.3
8025 North Interstate 35 (3)	Austin, Texas	May 18, 2012	12.5
400 S. Akard Street	Dallas, Texas	June 13, 2012	75.0
Sentrum Portfolio (4)	London, England	July 11, 2012	1,138.6
11900 East Cornell Avenue	Denver, Colorado	September 14, 2012	90.8
			$           1,462.2

(1) Convergence Business Park is comprised of nine buildings along with undeveloped land. It is considered one property for our property count.

(2) 9333, 9355, 9377 Grand Avenue is comprised of three buildings. It is considered one property for our property count.

(3) In connection with the acquisition, we assumed a $6.7 million secured mortgage loan.

(4)    On July 11, 2012, we completed the acquisition of a three-property data center portfolio, totaling approximately 733,000 square feet, located in the greater London area, referred to as the Sentrum Portfolio. The purchase price was £734.6 million (equivalent to approximately $1.1 billion based on the July 11, 2012 exchange rate of £1.00 to $1.55), which includes an £18.7 million (equivalent to approximately $29.0 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) adjustment in the purchase price to reflect amounts associated with the early repayment of property debt.  In addition, non-cash consideration of £56.5 million (or $87.6 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) was recorded as the expected fair value of contingent consideration as required by prevailing accounting guidance.  There was also a non-cash purchase adjustment related to deferred taxes, which amounted to £68.6 million (or $106.3 million based on the July 11, 2012 exchange rate of £1.00 to $1.55).  The purchase price was paid in cash funded with proceeds from our common stock offering in July 2012 along with borrowings under our global revolving credit facility.

Summary Of Acquired Intangible Assets And Liabilities Expected Weighted Average Useful Lives

	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)
Net	$	357,372		$	232,910
Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)
Net	$	68,269		$	29,701
Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)
Net	$	152,876		$	85,819

Schedule Of Pro Forma Operating Revenues And Operating Income

	Three months ended				Nine months ended
	Operating Revenues		Operating Income		Operating Revenues		Operating Income
	(in millions)				(in millions)
Supplemental pro forma for the periods ended September 30, 2012(1)	$	345.9	$	98.4	$	995.9	$	297.8
Supplemental pro forma for the periods ended September 30, 2011(1)		305.4		84.1		887.1		260.5

⁽¹⁾ These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisition occurred on January 1, 2011, and may not be indicative of future operating results. The pro forma results exclude transaction expenses.

Sentrum Portfolio [Member]

Business Acquisition [Line Items]

Summary Of Acquired Intangible Assets And Liabilities Expected Weighted Average Useful Lives

	Sentrum Portfolio
Acquired in place lease value		11.5 years
Acquired above market leases		7.3 years
Acquired below market leases		11.0 years

Sentrum Portfolio [Member] | Digital Realty Trust, L.P. [Member]

Business Acquisition [Line Items]

Summary Of Acquired Intangible Assets And Liabilities Expected Weighted Average Useful Lives

	Sentrum Portfolio
Acquired in place lease value		11.5 years
Acquired above market leases		7.3 years
Acquired below market leases		11.0 years

XML

Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Mortgage Loans) (Details)												9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended		9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended				9 Months Ended					9 Months Ended				9 Months Ended				9 Months Ended				3 Months Ended	9 Months Ended
	Sep. 30, 2012 USD ($)	Dec. 31, 2011 USD ($)	Sep. 30, 2012 GBP [Member]	Dec. 31, 2011 GBP [Member]	Sep. 30, 2012 EUR [Member]	Dec. 31, 2011 EUR [Member]	Sep. 30, 2012 Digital Realty Trust, L.P. [Member] USD ($)	Dec. 31, 2011 Digital Realty Trust, L.P. [Member] USD ($)	Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] USD ($)	Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Secured Term Debt [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Secured Term Debt [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 200 Paul Avenue 1-4 [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 200 Paul Avenue 1-4 [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Mundells Roundabout [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Mundells Roundabout [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 2045 & 2055 LaFayette Street [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 2045 & 2055 LaFayette Street [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 34551 Ardenwood Boulevard 1-4 [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 34551 Ardenwood Boulevard 1-4 [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 1100 Space Park Drive [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 1100 Space Park Drive [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 1350 Duane Avenue/3080 Raymond Street [Member]		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 1350 Duane Avenue/3080 Raymond Street [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 600 West Seventh Street [Member] USD ($)	Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 600 West Seventh Street [Member] USD ($)	Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 150 South First Street [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 150 South First Street [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 360 Spear Street [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 360 Spear Street [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 114 Rue Ambroise Croizat [Member]		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 114 Rue Ambroise Croizat [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 2334 Lundy Place [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 2334 Lundy Place [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Clonshaugh Industrial Estate II [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Clonshaugh Industrial Estate II [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 1500 Space Park Drive [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 1500 Space Park Drive [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Unit 9, Blanchardstown Corporate Park [Member]		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Unit 9, Blanchardstown Corporate Park [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Cressex 1 [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Cressex 1 [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 1201 Comstock Street [Member]		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 1201 Comstock Street [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Paul van Vlissingenstraat 16 [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Paul van Vlissingenstraat 16 [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 2805 Lafayette Street [Member]		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 2805 Lafayette Street [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 2805 Lafayette Street Mezzanine [Member]	Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Chemin de l'Epinglier 2 [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Chemin de l'Epinglier 2 [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Gyroscoopweg 2E-2F [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Gyroscoopweg 2E-2F [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Manchester Technopark [Member] USD ($)		Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Manchester Technopark [Member] USD ($)		Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 8025 North Interstate 35 [Member] USD ($)	Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 731 East Trade Street [Member] USD ($)	Dec. 31, 2011 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] 731 East Trade Street [Member] USD ($)	Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans [Member] Cressex 1 And Manchester Technopark [Member] GBP (£)	Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans And Other Secured Debt [Member] 2805 Lafayette Street And 2805 Lafayette Street Mezzanine [Member] USD ($)	Sep. 30, 2012 Digital Realty Trust, L.P. [Member] Mortgage Loans And Other Secured Debt [Member] 2805 Lafayette Street And 2805 Lafayette Street Mezzanine [Member] USD ($)	Sep. 30, 2012 Digital Realty Trust, L.P. [Member] GBP [Member] Mortgage Loans [Member]	Dec. 31, 2011 Digital Realty Trust, L.P. [Member] GBP [Member] Mortgage Loans [Member]	Sep. 30, 2012 Digital Realty Trust, L.P. [Member] EUR [Member] Mortgage Loans [Member]	Dec. 31, 2011 Digital Realty Trust, L.P. [Member] EUR [Member] Mortgage Loans [Member]
Debt of the Operating Partnership [Line Items]
Interest Rate												5.65%	[1],[2]			5.74%	[1]							5.93%	[1]			5.95%	[1]			5.89%	[1]			5.42%	[1]			5.80%		6.30%	[1]			6.32%	[1]							5.96%	[1]							6.15%	[1]							5.68%	[3]																								5.68%	[3]			4.09%	8.22%
Variable Rate Basis																				3-month GBP LIBOR + 1.20%	[4]																													3-month EURIBOR + 1.35%								3-month EURIBOR + 4.50%	[4],[5]							3-month EURIBOR + 1.35%								1-month LIBOR + 3.50%	[1]			3-month EURIBOR + 1.60%	[4]			1-month LIBOR + 4.75%	[1],[6]				3-month EURIBOR + 1.50%	[4]			3-month EURIBOR + 1.50%	[4]
Basis spread on variable rate																				1.20%																														1.35%								4.50%								1.35%								3.50%				1.60%				4.75%					1.50%				1.50%
Maturity Date												Nov. 11, 2014	[1],[2]			Oct. 08, 2015	[1]			Nov. 30, 2013				Feb. 06, 2017	[1]			Nov. 11, 2016	[1]			Dec. 11, 2016	[1]			Oct. 01, 2012	[1],[7]			Mar. 15, 2016		Feb. 06, 2017	[1]			Nov. 08, 2013	[1]			Jan. 18, 2012	[7]			Nov. 11, 2016	[1]			Sep. 04, 2014	[5]			Oct. 05, 2013	[1]			Jan. 18, 2012	[7]			Oct. 16, 2014	[3]			Jun. 24, 2012	[1],[7]			Jul. 18, 2013				Jun. 09, 2013	[1],[6],[7]				Jul. 18, 2013				Oct. 18, 2013				Oct. 16, 2014	[3]			Mar. 06, 2017	Jul. 01, 2020
Unamortized net premium							$ 2,258,000		$ 2,258,000	[8]	$ 2,077,000
Mortgage loans, net of premiums	794,485,000	947,132,000					794,485,000	947,132,000	794,485,000	[8]		136,726,000	[1],[2]	138,828,000	[1],[2]	73,114,000	[1]	74,458,000	[1]	69,235,000	[9]	66,563,000	[9]	64,864,000	[1]	65,551,000	[1]	53,102,000	[1]	53,627,000	[1]	53,078,000	[1]	53,609,000	[1]			52,800,000	[1]	51,566,000	52,709,000	51,008,000	[1]	51,508,000	[1]	46,862,000	[1]	47,569,000	[1]			39,483,000	[10]	38,621,000	[1]	39,003,000	[1]	38,580,000	[10],[5]	38,883,000	[10],[5]	36,247,000	[1]	37,875,000	[1]			33,946,000	[10]	28,529,000	[3],[9]	27,786,000	[3],[9]			16,163,000	[1]	13,053,000	[10]	13,319,000	[10]			10,000,000	[1],[6]		9,444,000	[10]	9,636,000	[10]	8,312,000	[10]	8,480,000	[10]	8,679,000	[3],[9]	8,453,000	[3],[9]	6,621,000	4,586,000	4,806,000
Mortgage loans on real estate, number												6
Number of properties												6																																																																																										2
Exchange rate			1.62	1.55	1.29	1.30																																																																																																			1.62	1.55	1.29	1.30
Letter of credit security amount																																																																																																						7,800,000
Debt instrument, date paid in full																																				September 2012														January 2012																January 2012								April 2012								May 2012				May 2012
Net loss from early extinguishment of debt																																																																																																							$ 300,000	$ 300,000

[1] The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.

[2] This amount represents six mortgage loans secured by our interests in 36 NE 2nd Street, 3300 East Birch Street, 100 & 200 Quannapowitt Parkway, 300 Boulevard East, 4849 Alpha Road, and 11830 Webb Chapel Road. Each of these loans is cross-collateralized by the six properties.

[3] These loans are also secured by a £7.8 million letter of credit. These loans are cross-collateralized by the two properties.

[4] We have entered into interest rate swap agreements as a cash flow hedge for interest generated by these US LIBOR, EURIBOR and GBP LIBOR based loans as well as the U.S. Dollar and Singapore Dollar tranches of the unsecured term loan. See note 13 for further information.

[5] The Operating Partnership or its subsidiary provides a limited recourse guarantee with respect to this loan.

[6] Property formerly referred to as 800 Central Expressway.

[7] These loans were repaid in full: 114 Rue Ambroise Croizat (January 2012), Unit 9, Blanchardstown Corporate Park (January 2012), 1201 Comstock Street (April 2012), 2805 Lafayette Street (May 2012), 2805 Lafayette Street Mezzanine (May 2012) and 1350 Duane Avenue/3080 Raymond Street (September 2012). Net loss from early extinguishment of debt related to write-off of unamortized deferred loan costs on 1201 Comstock Street, 2805 Lafayette Street and 2805 Lafayette Street Mezzanine amounted to $0.3 million for both the three and nine months ended September 30, 2012.

[8] Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of September 30, 2012, we provided limited recourse guarantees with respect to approximately $38.6 million of the outstanding mortgage indebtedness, and partial letter of credit support with respect to approximately an additional $37.2 million of the outstanding mortgage indebtedness (based on exchange rates as of September 30, 2012).

[9] Based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.

[10] Based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.

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Investments In Real Estate (Schedule Of Pro Forma Operating Revenues And Operating Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Investments In Real Estate [Abstract]
Pro Forma, Operating Revenue	$ 345.9	[1]	$ 305.4	[1]	$ 995.9	[1]	$ 887.1	[1]
Pro forma, Operating Income	$ 98.4	[1]	$ 84.1	[1]	$ 297.8	[1]	$ 260.5	[1]

[1] These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisition occurred on January 1, 2011, and may not be indicative of future operating results. The pro forma results exclude transaction expenses.

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Debt Of The Operating Partnership (Tables) (Digital Realty Trust, L.P. [Member])

9 Months Ended

Sep. 30, 2012

Summary Of Outstanding Indebtedness Of The Operating Partnership

Indebtedness	Interest Rate at September 30, 2012		Maturity Date		Principal Outstanding September 30, 2012		Principal Outstanding December 31, 2011
Global revolving credit facility	Various	(1)	Nov. 3, 2015		$                  526,372	(2)	$                  275,106	(2)
Unsecured term loan	Various	(3)(9)	Apr. 16, 2017		$                  754,935	(4)	$                              -
Unsecured senior notes:
Prudential Shelf Facility:
Series B	9.320%		Nov. 5, 2013		33,000		33,000
Series C	9.680%		Jan. 6, 2016		25,000		25,000
Series D	4.570%		Jan. 20, 2015		50,000		50,000
Series E	5.730%		Jan. 20, 2017		50,000		50,000
Series F	4.500%		Feb. 3, 2015		17,000		17,000
Total Prudential Shelf Facility					175,000		175,000
Senior Notes:
4.50% notes due 2015	4.500%		Jul. 15, 2015		375,000		375,000
5.875% notes due 2020	5.875%		Feb. 1, 2020		500,000		500,000
5.25% notes due 2021	5.250%		Mar. 15, 2021		400,000		400,000
3.625% notes due 2022	3.625%		Oct. 1, 2022		300,000		-
Unamortized discounts					(12,119)		(8,928)
Total senior notes, net of discount					1,562,881		1,266,072
Total unsecured senior notes, net of discount					1,737,881		1,441,072
5.50% exchangeable senior debentures due 2029	5.50%		Apr. 15, 2029	(5)	266,400		266,400
Total exchangeable senior debentures					266,400		266,400

Indebtedness	Interest Rate at September 30, 2012		Maturity Date		Principal Outstanding September 30, 2012		Principal Outstanding December 31, 2011
Mortgage loans:
Secured Term Debt (6)(7)	5.65%		Nov. 11, 2014		136,726		138,828
200 Paul Avenue 1-4 (7)	5.74%		Oct. 8, 2015		73,114		74,458
Mundells Roundabout	3-month GBP LIBOR + 1.20%	(9)	Nov. 30, 2013		69,235	(10)	66,563	(10)
2045 & 2055 LaFayette Street (7)	5.93%		Feb. 6, 2017		64,864		65,551
34551 Ardenwood Boulevard 1-4 (7)	5.95%		Nov. 11, 2016		53,102		53,627
1100 Space Park Drive (7)	5.89%		Dec. 11, 2016		53,078		53,609
1350 Duane Avenue/3080 Raymond Street (7)	5.42%		Oct. 1, 2012	(13)	-		52,800
600 West Seventh Street	5.80%		Mar. 15, 2016		51,566		52,709
150 South First Street (7)	6.30%		Feb. 6, 2017		51,008		51,508
360 Spear Street (7)	6.32%		Nov. 8, 2013		46,862		47,569
114 Rue Ambroise Croizat	3-month EURIBOR + 1.35%		Jan. 18, 2012	(13)	-		39,483	(11)
2334 Lundy Place (7)	5.96%		Nov. 11, 2016		38,621		39,003
Clonshaugh Industrial Estate II (8)	3-month EURIBOR + 4.50%	(9)	Sep. 4, 2014		38,580	(11)	38,883	(11)
1500 Space Park Drive (7)	6.15%		Oct. 5, 2013		36,247		37,875
Unit 9, Blanchardstown Corporate Park	3-month EURIBOR + 1.35%		Jan. 18, 2012	(13)	-		33,946	(11)
Cressex 1 (12)	5.68%		Oct. 16, 2014		28,529	(10)	27,786	(10)
1201 Comstock Street (7)	1-month LIBOR + 3.50%		Jun. 24, 2012	(13)	-		16,163
Paul van Vlissingenstraat 16	3-month EURIBOR + 1.60%	(9)	Jul. 18, 2013		13,053	(11)	13,319	(11)
2805 Lafayette Street (7)(14)	1-month LIBOR + 4.75%		Jun. 9, 2013	(13)	-		10,000
Chemin de l'Epinglier 2	3-month EURIBOR + 1.50%	(9)	Jul. 18, 2013		9,444	(11)	9,636	(11)
Gyroscoopweg 2E-2F	3-month EURIBOR + 1.50%	(9)	Oct. 18, 2013		8,312	(11)	8,480	(11)
Manchester Technopark (12)	5.68%		Oct. 16, 2014		8,679	(10)	8,453	(10)
8025 North Interstate 35	4.09%		Mar. 6, 2017		6,621		-
731 East Trade Street	8.22%		Jul. 1, 2020		4,586		4,806
Unamortized net premiums					2,258		2,077
Total mortgage loans, net of premiums					794,485		947,132
Other secured loan:
2805 Lafayette Street Mezzanine (7)(14)	1-month LIBOR + 8.50%		Jun. 9, 2013	(13)	-		10,500
Total other secured loan					-		10,500
Total indebtedness					$                4,080,073		$               2,940,210

(1) The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 125 basis points which is based on the credit rating of our long-term debt. An annual facility fee of 25 basis points, which is based on the credit rating of our long-term debt, is due and payable quarterly on the unused portion of the facility.

2) Balances as of September 30, 2012 and December 31, 2011 are as follows (balances, in thousands):

Denomination of Draw	Balance as of September 30, 2012		Weighted-average interest rate	Balance as of December 31, 2011		Weighted-average interest rate
US ($)	$                    -		0.00%	$                194,000		1.54%
British Sterling (£)	447,018	(a)	1.79%	49,892	(b)	1.99%
Singapore Dollar (SGD)	21,183	(a)	1.56%	28,151	(b)	1.56%
Australian Dollar (AUD)	39,021	(a)	4.83%	3,063	(b)	5.89%
Hong Kong Dollar (HKD)	19,150	(a)	1.55%	-		-
Total	$         526,372		1.99%	$                275,106		1.67%

(a)	Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.
(b)	Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

(3) Interest rates are based on our senior unsecured debt ratings and are currently 145 basis points over the applicable index for floating rate advances.

(4) Balances as of September 30, 2012 are as follows (balances, in thousands):

Denomination of Draw	Balance asof September 30,2012			Weighted-average interest rate
U.S. Dollar ($)	$	410,905			1.67	%
Singapore Dollar (SGD)		154,391	(a)		1.81	%
British Pound Sterling (£)		90,697	(a)		1.97	%
Euro (€)		63,657	(a)		1.57	%
Australian Dollar (AUD)		35,285	(a)		5.03	%
	$	754,935			1.89	%

(a) Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

(5) The holders of the debentures have the right to require the Operating Partnership to repurchase the debentures in cash in whole or in part for a price of 100% of the principal amount plus accrued and unpaid interest on each of April 15, 2014, April 15, 2019 and April 15, 2024. We have the right to redeem the debentures in cash for a price of 100% of the principal amount plus accrued and unpaid interest commencing on April 18, 2014.

(6) This amount represents six mortgage loans secured by our interests in 36 NE 2nd Street, 3300 East Birch Street, 100 & 200 Quannapowitt Parkway, 300 Boulevard East, 4849 Alpha Road, and 11830 Webb Chapel Road. Each of these loans is cross-collateralized by the six properties.

(7) The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.

(8) The Operating Partnership or its subsidiary provides a limited recourse guarantee with respect to this loan.

(9) We have entered into interest rate swap agreements as a cash flow hedge for interest generated by these US LIBOR, EURIBOR and GBP LIBOR based loans as well as the U.S. Dollar and Singapore Dollartranches of the unsecured term loan. See note 13 for further information.

(10) Based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.

(11) Based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.

(12) These loans are also secured by a £7.8 million letter of credit. These loans are cross-collateralized by the two properties.

(13)

These loans were repaid in full: 114 Rue Ambroise Croizat (January 2012), Unit 9, Blanchardstown Corporate Park (January 2012), 1201 Comstock Street (April 2012), 2805 Lafayette Street  (May 2012),2805 Lafayette Street Mezzanine (May 2012) and 1350 Duane Avenue/3080 Raymond Street (September 2012). Net loss from early extinguishment of debt related to write-off of unamortized deferred loan costs on 1201 Comstock Street, 2805 Lafayette Street and 2805 Lafayette Street Mezzanine amounted to $0.3 million for both the three and nine months ended September 30, 2012.

(14)

Property formerly referred to as 800 Central Expressway.

Schedule Of Debt Maturities And Principal Maturities

	Global Revolving Credit Facility (1)	Unsecured Term Loan	Unsecured Senior Notes	Senior Notes	Exchangeable Senior Debentures (3)	Mortgage Loans (2)	Total Debt
Remainder of 2012	$                      -	$             -	$                -	$                -	$                    -	$        3,765	$           3,765
2013	-	-	33,000	-	-	193,837	226,837
2014	-	-	-	-	266,400	216,388	482,788
2015	526,372	-	67,000	375,000	-	75,493	1,043,865
2016	-	-	25,000	-	-	191,979	216,979
Thereafter	-	754,935	50,000	1,200,000	-	110,765	2,115,700
Subtotal	$          526,372	$ 754,935	$    175,000	$ 1,575,000	$        266,400	$    792,227	$    4,089,934
Unamortized discount	-	-	-	(12,119)	-	-	(12,119)
Unamortized premium	-	-	-	-	-	2,258	2,258
Total	$          526,372	$ 754,935	$    175,000	$ 1,562,881	$        266,400	$    794,485	$    4,080,073

(1) Subject to a one-year extension option exercisable by us. The bank group is obligated to grant the extension option provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility.

(2) Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of September 30, 2012, we provided limited recourse guarantees with respect to approximately $38.6 million of the outstanding mortgage indebtedness, and partial letter of credit support with respect to approximately an additional $37.2 million of the outstanding mortgage indebtedness (based on exchange rates as of September 30, 2012).

(3) Assumes maturity of the 2029 Debentures at their first redemption date in April 2014.

Global Revolving Credit Facility [Member]

Schedule Of Balances And Foreign Currency Translation Revolving Credit Facilities

Denomination of Draw	Balance as of September 30, 2012		Weighted-average interest rate	Balance as of December 31, 2011		Weighted-average interest rate
US ($)	$                    -		0.00%	$                194,000		1.54%
British Sterling (£)	447,018	(a)	1.79%	49,892	(b)	1.99%
Singapore Dollar (SGD)	21,183	(a)	1.56%	28,151	(b)	1.56%
Australian Dollar (AUD)	39,021	(a)	4.83%	3,063	(b)	5.89%
Hong Kong Dollar (HKD)	19,150	(a)	1.55%	-		-
Total	$         526,372		1.99%	$                275,106		1.67%

(a)	Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.
(b)	Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

Unsecured Term Loan [Member]

Schedule Of Balances And Foreign Currency Translation Revolving Credit Facilities

Denomination of Draw	Balance asof September 30,2012			Weighted-average interest rate
U.S. Dollar ($)	$	410,905			1.67	%
Singapore Dollar (SGD)		154,391	(a)		1.81	%
British Pound Sterling (£)		90,697	(a)		1.97	%
Euro (€)		63,657	(a)		1.57	%
Australian Dollar (AUD)		35,285	(a)		5.03	%
	$	754,935			1.89	%

(a) Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

XML

Income Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Income Per Share [Abstract]

Summary Of Basic And Diluted Earnings Per Share

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Net income available to common stockholders	$            45,615	$            31,908	$          126,847	$            94,878
Weighted average shares outstanding—basic	122,026,421	100,588,235	112,995,512	96,137,611
Potentially dilutive common shares:
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)	-	49,163	-	38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock	-	914,480	-	308,176
Excess exchange value of the 2026 Debentures	-	-	-	494,292
Weighted average shares outstanding—diluted	122,353,511	101,912,342	113,275,221	97,316,650
Income per share:
Basic	$                0.37	$                0.32	$                1.12	$                0.99
Diluted	$                0.37	$                0.31	$                1.12	$                0.97

Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Weighted average of Operating Partnership common    units not owned by Digital Realty Trust, Inc.	4,345,574	4,481,045	4,346,586	4,708,129
Potentially dilutive 2029 Debentures	6,514,812	6,368,292	6,471,282	6,309,599
Potentially dilutive Series C Cumulative Convertible    Preferred Stock	-	2,783,811	1,087,398	3,097,084
Potentially dilutive Series D Cumulative Convertible    Preferred Stock	4,219,384	5,603,998	4,309,978	6,775,337
Potentially dilutive Series E Cumulative Redeemable    Preferred Stock	4,151,146	-	4,045,501	-
Potentially dilutive Series F Cumulative Redeemable    Preferred Stock	2,632,647	-	1,243,998	-
	21,863,563	19,237,146	21,504,743	20,890,149

XML

Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Cash flows from operating activities:
Net income	$ 160,152	$ 114,929
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on early extinguishment of debt-non cash portion		558
Equity in earnings of unconsolidated joint ventures	(6,402)	(3,656)
Distributions from unconsolidated joint ventures	18,573	3,250
Write-off of net assets due to early lease terminations	1,260	81
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases	226,739	181,499
Amortization of share-based unearned compensation	9,922	10,263
Allowance for (recovery of) doubtful accounts	(74)	(1,090)
Amortization of deferred financing costs	6,341	7,246
Write-off of deferred financing costs, included in net loss on early extinguishment of debt	254	85
Amortization of debt discount/premium	748	1,813
Amortization of acquired in place lease value and deferred leasing costs	48,096	48,313
Amortization of acquired above market leases and acquired below market leases, net	(7,443)	(5,663)
Changes in assets and liabilities:
Restricted cash	6,866	288
Accounts and other receivables	(52,851)	(9,610)
Deferred rent	(55,772)	(41,220)
Deferred leasing costs	(13,206)	(7,200)
Other assets	(13,107)	(11,389)
Accounts payable and other accrued liabilities	(7,194)	(6,859)
Security deposits and prepaid rents	33,634	(1,540)
Net cash provided by operating activities	356,536	280,098
Cash flows from investing activities:
Acquisitions of real estate	(1,451,598)	(86,567)
Investment in unconsolidated joint ventures	(37,069)	(382)
Deposits paid for acquisitions of real estate	(500)	(10,066)
Receipt of value added tax refund	15,272	9,253
Refundable value added tax paid	(17,611)	(17,859)
Change in restricted cash	3,227	4,604
Improvements to and advances for investments in real estate	(596,644)	(489,709)
Improvement advances to tenants	(2,384)	(7,705)
Collection of advances from tenants for improvements	2,379	6,746
Net cash used in investing activities	(2,084,928)	(591,685)
Cash flows from financing activities:
Repayments on revolving credit facilites	(1,271,528)	(1,049,182)
Repayments on other secured loan	(10,500)
Principal payments on mortgage loans	(162,548)	(127,341)
Principal repayments on 2026 exchangeable senior debentures		(88,758)
Principal payments on unsecured notes		(25,000)
Equity component settled associated with exchange of 2026 exchangeable senior debentures		(11,783)
Change in restricted cash	2,011	(73)
Payment of loan fees and costs	(8,859)	(6,593)
Capital contributions received from noncontrolling interests in joint ventures	2,323	119
Gross proceeds from the sale of common stock	894,221	419,619
Gross proceeds from the sale of preferred stock	182,500	287,500
Common stock offering costs paid	(34,310)	(6,027)
Preferred stock offering costs paid	(6,429)	(9,447)
Proceeds from exercise of stock options	(4,173)	(3,416)
Payment of dividends/distributions to preferred stockholders/unitholders	(28,921)	(15,671)
Payment of dividends/distributions to common stockholders/unitholders and distributions to noncontrolling interests in operating partnership	(334,430)	(261,286)
Purchase of noncontrolling interests in consolidated joint venture	12,384	53,240
Net cash provided by financing activities	1,763,876	338,600
Net (decrease) increase in cash and cash equivalents	35,484	27,013
Cash and cash equivalents at beginning of period	40,631	11,719
Cash and cash equivalents at end of period	76,115	38,732
Supplemental disclosure of cash flow information:
Cash paid for interest, including amounts capitalized	135,840	126,664
Cash paid for taxes	2,045	1,568
Supplementary disclosure of noncash investing and financing activities:
Change in net assets related to foreign currency translation adjustments	36,286	(10,543)
Decrease (increase) in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps	(6,794)	(3,036)
Noncontrolling interests in operating partnership redeemed for or converted to shares of common stock	4,898	6,560
Preferred stock/units converted to shares of common stock/units	169,239	165,160
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses	240,310	136,840
Issuance of common units associated with exchange of 2026 exchangeable senior debentures, net		221
Accrual for contingent purchase price of Sentrum portfolio included in accounts payable and accrued expenses	87,532
Allocation of purchase price of real estate/investment in partnership to:
Investments in real estate	1,336,127	79,424
Acquired above market leases	(44,402)	(178)
Acquired below market leases	(80,604)
Acquired in place lease value and deferred leasing costs	(158,563)	(6,965)
Mortgage loans assumed, net of premium	(6,890)
Cash paid for acquisition of real estate	1,451,598	86,567
5.250% Due 2021 [Member]
Cash flows from financing activities:
Borrowings on unsecured senior notes		399,100
3.625% Notes Due 2022 [Member]
Cash flows from financing activities:
Borrowings on unsecured senior notes	296,052
Digital Realty Trust, L.P. [Member]
Cash flows from operating activities:
Net income	160,152	114,929
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on early extinguishment of debt-non cash portion		558
Equity in earnings of unconsolidated joint ventures	(6,402)	(3,656)
Distributions from unconsolidated joint ventures	18,573	3,250
Write-off of net assets due to early lease terminations	1,260	81
Depreciation and amortization of buildings and improvements, tenant improvements and acquired ground leases	226,739	181,499
Amortization of share-based unearned compensation	9,922	10,263
Allowance for (recovery of) doubtful accounts	(74)	(1,090)
Amortization of deferred financing costs	6,341	7,246
Write-off of deferred financing costs, included in net loss on early extinguishment of debt	254	85
Amortization of debt discount/premium	748	1,813
Amortization of acquired in place lease value and deferred leasing costs	48,096	48,313
Amortization of acquired above market leases and acquired below market leases, net	(7,443)	(5,663)
Changes in assets and liabilities:
Restricted cash	6,866	288
Accounts and other receivables	(52,851)	(9,610)
Deferred rent	(55,772)	(41,220)
Deferred leasing costs	(13,206)	(7,200)
Other assets	(13,107)	(11,389)
Accounts payable and other accrued liabilities	(7,194)	(6,859)
Security deposits and prepaid rents	33,634	(1,540)
Net cash provided by operating activities	356,536	280,098
Cash flows from investing activities:
Acquisitions of real estate	(1,451,598)	(86,567)
Investment in unconsolidated joint ventures	(37,069)	(382)
Deposits paid for acquisitions of real estate	(500)	(10,066)
Receipt of value added tax refund	15,272	9,253
Refundable value added tax paid	(17,611)	(17,859)
Change in restricted cash	3,227	4,604
Improvements to and advances for investments in real estate	(596,644)	(489,709)
Improvement advances to tenants	(2,384)	(7,705)
Collection of advances from tenants for improvements	2,379	6,746
Net cash used in investing activities	(2,084,928)	(591,685)
Cash flows from financing activities:
Repayments on other secured loan	(10,500)
Principal payments on mortgage loans	(162,548)	(127,341)
Principal repayments on 2026 exchangeable senior debentures		(88,758)
Principal payments on unsecured notes		(25,000)
Equity component settled associated with exchange of 2026 exchangeable senior debentures		11,783
Change in restricted cash	(2,011)	73
Payment of loan fees and costs	(8,859)	(6,593)
Capital contributions received from noncontrolling interests in joint ventures	2,323	119
General partner contributions	1,040,155	695,061
Payment of dividends/distributions to preferred stockholders/unitholders	(28,921)	(15,671)
Payment of dividends/distributions to common stockholders/unitholders and distributions to noncontrolling interests in operating partnership	(334,430)	(261,286)
Purchase of noncontrolling interests in consolidated joint venture	(12,384)	(53,240)
Net cash provided by financing activities	1,763,876	338,600
Net (decrease) increase in cash and cash equivalents	35,484	27,013
Cash and cash equivalents at beginning of period	40,631	11,719
Cash and cash equivalents at end of period	76,115	38,732
Supplemental disclosure of cash flow information:
Cash paid for interest, including amounts capitalized	135,840	126,664
Cash paid for taxes	2,045	1,568
Supplementary disclosure of noncash investing and financing activities:
Change in net assets related to foreign currency translation adjustments	36,286	(10,543)
Decrease (increase) in accounts payable and other accrued liabilities related to change in fair value of interest rate swaps	(6,794)	(3,036)
Preferred stock/units converted to shares of common stock/units	169,239	165,160
Accrual for additions to investments in real estate and tenant improvement advances included in accounts payable and accrued expenses	240,310	136,840
Issuance of common units associated with exchange of 2026 exchangeable senior debentures, net		221
Accrual for contingent purchase price of Sentrum portfolio included in accounts payable and accrued expenses	87,532
Allocation of purchase price of real estate/investment in partnership to:
Investments in real estate	1,336,127	79,424
Acquired above market leases	44,402	178
Acquired below market leases	(80,604)
Acquired in place lease value and deferred leasing costs	158,563	6,965
Mortgage loans assumed, net of premium	(6,890)
Cash paid for acquisition of real estate	1,451,598	86,567
Digital Realty Trust, L.P. [Member] | 5.250% Due 2021 [Member]
Cash flows from financing activities:
Borrowings on unsecured senior notes		(399,100)
Digital Realty Trust, L.P. [Member] | 3.625% Notes Due 2022 [Member]
Cash flows from financing activities:
Borrowings on unsecured senior notes	296,052
Global Revolving Credit Facility [Member]
Cash flows from financing activities:
Borrowings on lines of credit	1,500,520	883,247
Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Cash flows from financing activities:
Borrowings on lines of credit	1,500,520	883,247
Repayments on revolving credit facilites	(1,271,528)	(1,049,182)
Unsecured Term Loan [Member]
Cash flows from financing activities:
Borrowings on lines of credit	751,985
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]
Cash flows from financing activities:
Borrowings on lines of credit	$ 751,985

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Income Per Unit (Tables)

9 Months Ended

Sep. 30, 2012

Summary Of Basic And Diluted Earnings Per Share

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Net income available to common stockholders	$            45,615	$            31,908	$          126,847	$            94,878
Weighted average shares outstanding—basic	122,026,421	100,588,235	112,995,512	96,137,611
Potentially dilutive common shares:
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)	-	49,163	-	38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock	-	914,480	-	308,176
Excess exchange value of the 2026 Debentures	-	-	-	494,292
Weighted average shares outstanding—diluted	122,353,511	101,912,342	113,275,221	97,316,650
Income per share:
Basic	$                0.37	$                0.32	$                1.12	$                0.99
Diluted	$                0.37	$                0.31	$                1.12	$                0.97

Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Weighted average of Operating Partnership common    units not owned by Digital Realty Trust, Inc.	4,345,574	4,481,045	4,346,586	4,708,129
Potentially dilutive 2029 Debentures	6,514,812	6,368,292	6,471,282	6,309,599
Potentially dilutive Series C Cumulative Convertible    Preferred Stock	-	2,783,811	1,087,398	3,097,084
Potentially dilutive Series D Cumulative Convertible    Preferred Stock	4,219,384	5,603,998	4,309,978	6,775,337
Potentially dilutive Series E Cumulative Redeemable    Preferred Stock	4,151,146	-	4,045,501	-
Potentially dilutive Series F Cumulative Redeemable    Preferred Stock	2,632,647	-	1,243,998	-
	21,863,563	19,237,146	21,504,743	20,890,149

Digital Realty Trust, L.P. [Member]

Summary Of Basic And Diluted Earnings Per Share

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Net income available to common unitholders	$            47,189	$            33,329	$          131,668	$            99,533
Weighted average units outstanding--basic	126,242,751	105,069,280	117,291,480	100,845,740
Potentially dilutive common units:
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)	-	49,163	-	38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred units	-	914,480	-	308,176
Excess exchange value of the 2026 Debentures	-	-	-	494,292
Weighted average units outstanding--diluted	126,569,841	106,393,387	117,571,189	102,024,779
Income per unit:
Basic	$                0.37	$                0.32	$                1.12	$                0.99
Diluted	$                0.37	$                0.31	$                1.12	$                0.97

Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2011	2010
Potentially dilutive 2029 Debentures	6,514,812	6,368,292	6,471,282	6,309,599
Potentially dilutive Series C Cumulative Convertible    Preferred Units	-	2,783,811	1,087,398	3,097,084
Potentially dilutive Series D Cumulative Convertible    Preferred Units	4,219,384	5,603,998	4,309,978	6,775,337
Potentially dilutive Series E Cumulative Redeemable     Preferred Units	4,151,146	-	4,045,501	-
Potentially dilutive Series F Cumulative Redeemable    Preferred Units	2,632,647	-	1,243,998	-
	17,517,989	14,756,101	17,158,157	16,182,020

XML

Related Party Transactions (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended		1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Tel(x) [Member] sqft	Sep. 30, 2011 Tel(x) [Member]	Sep. 30, 2012 Tel(x) [Member] contract sqft	Sep. 30, 2011 Tel(x) [Member]	Dec. 31, 2011 Tel(x) [Member] contract sqft	Dec. 31, 2006 Tel(x) [Member] contract	Sep. 30, 2011 Unrelated Third Party [Member] contract sqft	Sep. 30, 2012 SoftLayer [Member]	Sep. 30, 2011 SoftLayer [Member]	Sep. 30, 2012 SoftLayer [Member] contract	Sep. 30, 2011 SoftLayer [Member]	Sep. 30, 2012 Minimum [Member] SoftLayer [Member]	Sep. 30, 2012 Maximum [Member] SoftLayer [Member]
Related Party Transaction [Line Items]
Number of leases agreement							43		41	10	2			9
Lease expiration, date							2026									2013	2025
Terms of lease extended through							2046
Rental revenues	$ 260,052,000	$ 206,846,000	$ 717,809,000	$ 606,447,000	$ 12,000,000	$ 11,400,000	$ 33,700,000	$ 30,900,000				$ 19,400,000	$ 4,700,000	$ 41,200,000	$ 11,600,000
Square footage of net rentable space					259,294		259,294		254,314		4,980
Percentage rent lease revenue earned					$ 1,700,000	$ 1,400,000	$ 3,100,000	$ 2,100,000
Percentage of rent for management fee							1.00%
Lease option extension date																2018	2035

XML

Summary Of Significant Accounting Policies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 D	Sep. 30, 2011	Dec. 31, 2011
Summary Of Significant Accounting Policies [Abstract]
Period in which short-term investment become cash equivalents (days)			90
Assets or liabilities for uncertain tax positions	$ 0		$ 0		$ 0
Interest or penalties from uncertain tax positions	0	0	0	0
Asset retirement obligations	1.7		1.7		1.2
Interest capitalized	4.5	4.8	13.6	13.6
Compensation costs, leasing and construction activities	8.0	6.5	23.3	18.8
Cash flows from capitalized leasing costs			$ 26.5	$ 19.1

XML

Debt Of The Operating Partnership (Summary Of Outstanding Indebtedness Of The Operating Partnership - Unsecured Term Loan) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012 Unsecured Term Loan [Member] Digital Realty Trust, L.P. [Member]		Sep. 30, 2012 Unsecured Term Loan [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 SGD [Member]	Sep. 30, 2012 SGD [Member] Unsecured Term Loan [Member] Digital Realty Trust, L.P. [Member]		Sep. 30, 2012 GBP [Member]	Dec. 31, 2011 GBP [Member]	Sep. 30, 2012 GBP [Member] Unsecured Term Loan [Member] Digital Realty Trust, L.P. [Member]		Sep. 30, 2012 EUR [Member]	Dec. 31, 2011 EUR [Member]	Sep. 30, 2012 EUR [Member] Unsecured Term Loan [Member] Digital Realty Trust, L.P. [Member]		Sep. 30, 2012 AUD [Member] Unsecured Term Loan [Member] Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Revolving credit facilities interest rates	Various
Maturity Date	Apr. 16, 2017
Balance/Principal Outstanding	$ 754,935	[1]	$ 410,905		$ 154,391	[2]			$ 90,697	[2]			$ 63,657	[2]	$ 35,285	[2]
Revolving credit facility basis spread on variable rate	145
Weighted-average interest rate	1.89%		1.67%		1.81%				1.97%				1.57%		5.03%
Exchange rate				0.81	0.81		1.62	1.55	1.62		1.29	1.30	1.29		1.04

[1] (4) Balances as of September 30, 2012 are as follows (balances, in thousands): Denomination of Draw Balance as of September 30, 2012 Weighted-average
interest rate U.S. Dollar ($) $ 410,905 1.67 % Singapore Dollar (SGD) 154,391 (a) 1.81 % British Pound Sterling (£) 90,697 (a) 1.97 % Euro (€) 63,657 (a) 1.57 % Australian Dollar (AUD) 35,285 (a) 5.03 % $ 754,935 1.89 % (a) Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

[2] Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

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Capital And Comprehensive Income (Schedule Of Distributions) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2012		Dec. 31, 2012	Dec. 31, 2011
Series C Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	$ 1,402	[1],[2]
Preferred stock dividend per share amount	$ 1.094
Preferred stock, conversion date	Apr. 17, 2012
Preferred stock, dividend rate	4.375%			4.375%
Shares issued upon conversion	0.5480
Series C Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	1,402	[1],[2]
Preferred stock dividend per share amount	$ 1.094
Preferred stock, conversion date	Apr. 17, 2012
Preferred stock, dividend rate	4.375%			4.375%
Shares issued upon conversion	0.5480
Series D Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividend/Distribution payable date			Dec. 31, 2012
Dividends/Distributions, preferred stock/units	6,515	[3]
Preferred stock dividend per share amount	$ 1.375		$ 1.375
Preferred stock, dividend rate	5.50%			5.50%
Series D Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	6,515	[3]
Preferred stock dividend per share amount	$ 1.375
Preferred stock, dividend rate	5.50%			5.50%
Series E Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividend/Distribution payable date			Dec. 31, 2012
Dividends/Distributions, preferred stock/units	15,093	[4]
Preferred stock dividend per share amount	$ 1.750		$ 1.750
Preferred stock, dividend rate	7.00%			7.00%
Series E Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	15,093	[4]
Preferred stock dividend per share amount	$ 1.750
Preferred stock, dividend rate	7.00%			7.00%
Series F Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividend/Distribution payable date			Dec. 31, 2012
Dividends/Distributions, preferred stock/units	5,911	[5]
Preferred stock dividend per share amount	$ 1.656		$ 1.65625
Preferred stock, dividend rate	6.625%			6.625%
Series F Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	5,911	[5]
Preferred stock dividend per share amount	$ 1.656
Preferred stock, dividend rate	6.625%			6.625%
Common Stock [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividend/Distribution payable date			Jan. 15, 2013
Dividends/Distributions, common stock/units	248,492	[6]
Preferred stock dividend per share amount			$ 2.920
Common Units, annual rate of distribution per unit	$ 2.920
Common Stock [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, common stock/units	258,975	[6]
Preferred stock dividend per share amount	$ 2.920
February 14, 2012 [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date dividend/distribution declared	Feb. 14, 2012
Dividend/Distribution payable date	Mar. 30, 2012
February 14, 2012 [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date dividend/distribution declared	Feb. 14, 2012
Dividend/Distribution payable date	Mar. 30, 2012
February 14, 2012 [Member] | Series C Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	1,402	[1],[2]
February 14, 2012 [Member] | Series C Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	1,402	[1],[2]
February 14, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	2,398	[3]
February 14, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	2,398	[3]
February 14, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	5,031	[4]
February 14, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	5,031	[4]
February 14, 2012 [Member] | Common Stock [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, common stock/units	78,335	[6]
February 14, 2012 [Member] | Common Stock [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, common stock/units	81,917	[6]
April 23, 2012 [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date dividend/distribution declared	Apr. 23, 2012
Dividend/Distribution payable date	Jun. 29, 2012
April 23, 2012 [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date dividend/distribution declared	Apr. 23, 2012
Dividend/Distribution payable date	Jun. 29, 2012
April 23, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	2,394	[3]
April 23, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	2,394	[3]
April 23, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	5,031	[4]
April 23, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	5,031	[4]
April 23, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	2,888	[5],[7]
April 23, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	2,888	[5],[7]
April 23, 2012 [Member] | Common Stock [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, common stock/units	80,478	[6]
April 23, 2012 [Member] | Common Stock [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, common stock/units	83,982	[6]
July 19, 2012 [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date dividend/distribution declared	Jul. 19, 2012
Dividend/Distribution payable date	Sep. 28, 2012
July 19, 2012 [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date dividend/distribution declared	Jul. 19, 2012
Dividend/Distribution payable date	Sep. 28, 2012
July 19, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	1,723	[3]
July 19, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	1,723	[3]
July 19, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	5,031	[4]
July 19, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	5,031	[4]
July 19, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	3,023	[5]
July 19, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	3,023	[5]
July 19, 2012 [Member] | Common Stock [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, common stock/units	89,679	[6]
July 19, 2012 [Member] | Common Stock [Member] | Digital Realty Trust, L.P. [Member]
Capital and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, common stock/units	$ 93,076	[6]

[1] $1.094 annual rate of dividend per share.

[2] Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% series C cumulative convertible preferred stock, or the series C preferred stock, into shares of its of common stock in accordance with the terms of the series C preferred stock. Each share of series C preferred stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.

[3] $1.375 annual rate of dividend per share.

[4] $1.750 annual rate of dividend per share.

[5] $1.656 annual rate of dividend per share.

[6] $2.920 annual rate of dividend per share.

[7] Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

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Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
ASSETS
Land	$ 621,279		$ 555,113
Acquired ground leases	13,492		6,214
Buildings and improvements	7,363,430		5,253,754
Tenant improvements	383,627		303,502
Total investments in properties	8,381,828		6,118,583
Accumulated depreciation and amortization	(1,116,600)		(900,044)
Net investments in properties	7,265,228		5,218,539
Investment in unconsolidated joint ventures	48,882		23,976
Net investments in real estate	7,314,110		5,242,515
Cash and cash equivalents	76,115		40,631
Accounts and other receivables, net of allowance for doubtful accounts of $2,362 and $2,436 as of September 30, 2012 and December 31, 2011, respectively	146,025		90,580
Deferred rent	301,535		246,815
Acquired above market leases, net	68,269		29,701
Acquired in place lease value and deferred leasing costs, net	492,393		335,381
Deferred financing costs, net	32,163		29,849
Restricted cash	43,217		55,165
Other assets	38,771		27,929
Total assets	8,512,598		6,098,566
LIABILITIES AND EQUITY/CAPITAL
Unsecured senior notes, net of discount	1,737,881		1,441,072
Exchangeable senior debentures	266,400		266,400
Mortgage loans, net of premiums	794,485		947,132
Other secured loan			10,500
Accounts payable and other accrued liabilities	616,042		315,133
Accrued dividends and distributions			75,455
Acquired below market leases, net	152,876		85,819
Security deposits and prepaid rents	136,051		101,538
Total liabilities	4,985,042		3,518,155
Commitments and contingencies
Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:
Common Stock: $0.01 par value, 165,000,000 shares authorized, 123,261,390 and 106,039,279 shares issued and outstanding as of September 30, 2012 and December 31, 2011, respectively	1,228		1,057
Additional paid-in capital	3,536,463		2,496,651
Accumulated dividends in excess of earnings	(610,337)		(488,692)
Accumulated other comprehensive loss, net	(24,524)		(55,880)
Total stockholders' equity	3,479,443		2,522,917
Noncontrolling Interests:
Noncontrolling interests in operating partnership	44,141		45,057
Noncontrolling interests in consolidated joint ventures	3,972		12,437
Total noncontrolling interests	48,113		57,494
Total equity	3,527,556		2,580,411
Total liabilities and equity	8,512,598		6,098,566
Digital Realty Trust, L.P. [Member]
ASSETS
Land	621,279		555,113
Acquired ground leases	13,492		6,214
Buildings and improvements	7,363,430		5,253,754
Tenant improvements	383,627		303,502
Total investments in properties	8,381,828		6,118,583
Accumulated depreciation and amortization	(1,116,600)		(900,044)
Net investments in properties	7,265,228		5,218,539
Investment in unconsolidated joint ventures	48,882		23,976
Net investments in real estate	7,314,110		5,242,515
Cash and cash equivalents	76,115		40,631
Accounts and other receivables, net of allowance for doubtful accounts of $2,362 and $2,436 as of September 30, 2012 and December 31, 2011, respectively	146,025		90,580
Deferred rent	301,535		246,815
Acquired above market leases, net	68,269		29,701
Acquired in place lease value and deferred leasing costs, net	492,393		335,381
Deferred financing costs, net	32,163		29,849
Restricted cash	43,217		55,165
Other assets	38,771		27,929
Total assets	8,512,598		6,098,566
LIABILITIES AND EQUITY/CAPITAL
Unsecured senior notes, net of discount	1,737,881		1,441,072
Exchangeable senior debentures	266,400		266,400
Mortgage loans, net of premiums	794,485		947,132
Other secured loan			10,500
Accounts payable and other accrued liabilities	616,042		315,133
Accrued dividends and distributions			75,455
Acquired below market leases, net	152,876		85,819
Security deposits and prepaid rents	136,051		101,538
Total liabilities	4,985,042		3,518,155
Commitments and contingencies
Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:
123,261,390 and 106,039,279 common units issued and outstanding as of September 30, 2012 and December 31, 2011, respectively	2,927,354		2,009,016
Limited partners, 3,131,814 and 3,405,814 common units, 1,075,028 and 1,054,473 profits interest units and 419,226 and 475,843 class C units outstanding as of September 30, 2012 and December 31, 2011, respectively	47,228		49,240
Accumulated other comprehensive loss, net	(27,611)		(60,063)
Total partners' capital	3,523,584		2,567,974
Noncontrolling Interests:
Noncontrolling interests in consolidated joint ventures	3,972		12,437
Total capital	3,527,556		2,580,411
Total liabilities and capital	8,512,598		6,098,566
Series C Cumulative Convertible Preferred Units [Member]
Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:
Preferred Stock			123,820
Series C Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:
Preferred Stock			123,820
Series D Cumulative Convertible Preferred Units [Member]
Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:
Preferred Stock	123,250		168,669
Series D Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:
Preferred Stock	123,250		168,669
Series E Cumulative Convertible Preferred Units [Member]
Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:
Preferred Stock	277,172		277,292
Series E Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:
Preferred Stock	277,172		277,292
Series F Cumulative Convertible Preferred Units [Member]
Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:
Preferred Stock	176,191
Series F Cumulative Convertible Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Preferred Stock: $0.01 par value per share, 30,000,000 shares authorized:
Preferred Stock	176,191
Global Revolving Credit Facility [Member]
LIABILITIES AND EQUITY/CAPITAL
Line of credit	526,372		275,106
Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
LIABILITIES AND EQUITY/CAPITAL
Line of credit	526,372	[1]	275,106
Unsecured Term Loan [Member]
LIABILITIES AND EQUITY/CAPITAL
Line of credit	754,935
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]
LIABILITIES AND EQUITY/CAPITAL
Line of credit	$ 754,935

[1] Subject to a one-year extension option exercisable by us. The bank group is obligated to grant the extension option provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility.

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Acquired Intangible Assets And Liabilities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Acquired Below-Market Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of acquired above-market (below-market) lease	$ (2.3)	$ (2.0)	$ (7.4)	$ (5.7)
Expected remaining lives (years)			7 years 6 months
Acquired Above-Market Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Expected remaining lives (years)			5 years 9 months 18 days
Acquired In Place Lease Value [Member]
Finite-Lived Intangible Assets [Line Items]
Costs incurred to renew or extend leases	$ 14.5	$ 13.5	$ 38.9	$ 41.3
Expected remaining lives (years)			7 years 4 months 24 days
Weighted average period prior to renewal (years)			5 years 10 months 24 days

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Condensed Consolidated Statement Of Equity (USD $) In Thousands, except Share data	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Dividends In Excess Of Earnings [Member]	Accumulated Other Comprehensive Loss, Net [Member]	Total Stockholders' Equity [Member]	Noncontrolling Interests In Operating Partnership [Member]	Noncontrolling Interests In Consolidated Joint Ventures [Member]	Total Noncontrolling Interests [Member]	Total
Balance at Dec. 31, 2011	$ 569,781	$ 1,057	$ 2,496,651	$ (488,692)	$ (55,880)	$ 2,522,917	$ 45,057	$ 12,437	$ 57,494	$ 2,580,411
Balance (shares) at Dec. 31, 2011		106,039,279
Conversion of units to common stock		5	4,893			4,898	(4,898)		(4,898)
Conversion of units to common stock (shares)		460,192
Issuance of restricted stock, net of forfeitures (shares)		93,276
Net proceeds from issuance of common stock		125	859,786			859,911				859,911
Net proceeds from issuance of common stock (shares)		12,456,818
Exercise of stock options		1	4,172			4,173				4,173
Exercise of stock options (shares)		207,550								207,550
Issuance of series F preferred stock, net of offering costs	176,071					176,071				176,071
Conversion of convertible preferred stock/units	(169,239)	40	169,199
Conversion of convertible preferred stock/units (shares)		4,004,275
Amortization of unearned compensation regarding share based awards			12,339			12,339				12,339
Reclassification of vested share based awards			(8,544)			(8,544)	8,544		8,544
Dividends declared on preferred stock				(28,921)		(28,921)				(28,921)
Dividends and distributions on common stock and common and incentive units				(248,492)		(248,492)	(10,483)		(10,483)	(258,975)
Contributions from noncontrolling interests in consolidated joint ventures								2,323	2,323	2,323
Purchase of noncontrolling interests in consolidated joint venture			(2,033)			(2,033)		(10,351)	(10,351)	(12,384)
Net income				155,768		155,768	4,821	(437)	4,384	160,152
Other comprehensive income (loss) - foreign currency translation adjustments					35,053	35,053	1,233		1,233	36,286
Other comprehensive income (loss) - fair value of interest rate swaps					(6,553)	(6,553)	(241)		(241)	(6,794)
Reclassification to interest expense from interest rate swaps					2,856	2,856	108		108	2,964
Balance at Sep. 30, 2012	$ 576,613	$ 1,228	$ 3,536,463	$ (610,337)	$ (24,524)	$ 3,479,443	$ 44,141	$ 3,972	$ 48,113	$ 3,527,556
Balance (shares) at Sep. 30, 2012		123,261,390

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Income Per Share (Narrative) (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011 Exchangeable Senior Debentures [Member]
Interest rate		4.125%
Maturity date		Aug. 15, 2026
Shares of common stock contingently issuable	494,292

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Incentive Plan (Tables)

9 Months Ended

Sep. 30, 2012

Summary Of Incentive Award Plan's Stock Option

	Period ended September 30,  2012
	Shares			Weighted average exercise price
Options outstanding, beginning of period		337,760		$	24.17
Exercised		(207,550	)		20.11
Cancelled / Forfeited		(301	)		41.73
Options outstanding, end of period		129,909		$	30.62
Exercisable, end of period		129,909		$	30.62

Summary Of Stock Options Outstanding And Exercisable

Options outstanding									Options exercisable
Exercise price	Number outstanding		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic  value		Number exercisable		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic  value
$12.00-13.02		34,870		2.08	$	12.00	$	2,017,230		34,870		2.08	$	12.00	$	2,017,230
$20.37-28.09		17,000		3.14		21.28		825,720		17,000		3.14		21.28		825,720
$33.18-41.73		78,039		4.54		40.97		2,253,392		78,039		4.54		40.97		2,253,392
		129,909		3.70	$	30.62	$	5,096,342		129,909		3.70	$	30.62	$	5,096,342

Digital Realty Trust, L.P. [Member]

Summary Of Incentive Award Plan's Stock Option

	Period ended September 30,  2012
	Shares			Weighted average exercise price
Options outstanding, beginning of period		337,760		$	24.17
Exercised		(207,550	)		20.11
Cancelled / Forfeited		(301	)		41.73
Options outstanding, end of period		129,909		$	30.62
Exercisable, end of period		129,909		$	30.62

Summary Of Stock Options Outstanding And Exercisable

Options outstanding									Options exercisable
Exercise price	Number outstanding		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic  value		Number exercisable		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic  value
$12.00-13.02		34,870		2.08	$	12.00	$	2,017,230		34,870		2.08	$	12.00	$	2,017,230
$20.37-28.09		17,000		3.14		21.28		825,720		17,000		3.14		21.28		825,720
$33.18-41.73		78,039		4.54		40.97		2,253,392		78,039		4.54		40.97		2,253,392
		129,909		3.70	$	30.62	$	5,096,342		129,909		3.70	$	30.62	$	5,096,342

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Income Taxes (Details)	9 Months Ended
	Sep. 30, 2012
Income Taxes [Abstract]
Percentage of taxable income distributed to the partnership	100.00%

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Derivative Instruments

9 Months Ended

Sep. 30, 2012

Derivative Instruments

13. Derivative Instruments

Currently, we use interest rate swaps to manage our interest rate risk. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves. The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves.  

To comply with the provisions of fair value accounting guidance, we incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we have considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although we have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties. However, as of December 31, 2011, we have assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and have determined that the credit valuation adjustments are not significant to the overall valuation of our derivatives. As a result, we have determined that our derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. We do not have any fair value measurements on a recurring basis using significant unobservable inputs (Level 3) as of September 30, 2012 or December 31, 2011.

Cash Flow Hedges of Interest Rate Risk

Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposure to interest rate movements related to US LIBOR, GBP LIBOR and EURIBOR based mortgage loans as well as the U.S. LIBOR and SGD-SOR based tranches of the unsecured term loan. To accomplish this objective, we primarily use interest rate swaps as part of our interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Under an interest rate cap, if the reference interest rate, such as one-month LIBOR, increases above the cap rate, the holder of the instrument receives a payment based on the notional value of the instrument, the length of the period, and the difference between the current reference rate and the cap rate. If the reference rate increases above the cap rate, the payment received under the interest rate cap will offset the increase in the payments due under the variable rate notes payable.

We record all our interest rate swaps on the condensed consolidated balance sheet at fair value. In determining the fair value of our interest rate swaps, we consider the credit risk of our counterparties. These counterparties are generally larger financial institutions engaged in providing a variety of financial services. These institutions generally face similar risks regarding adverse changes in market and economic conditions, including, but not limited to, fluctuations in interest rates, exchange rates, equity and commodity prices and credit spreads. The current and pervasive disruptions in the financial markets have heightened the risks to these institutions.

Interest rate caps are viewed as a series of call options or caplets which exist for each period the cap agreement is in existence. As each caplet expires, the related cost of the expired caplet is amortized to interest expense with the remaining caplets carried at fair value. The value of interest rate caps is primarily impacted by interest rates, market expectations about interest rates, and the remaining life of the instrument. In general, increases in interest rates, or anticipated increases in interest rates, will increase the value of interest rate caps. As the remaining life of an interest rate cap decreases, the value of the instrument will generally decrease towards zero. The purchase price of an interest rate cap is amortized to interest expense over the contractual life of the instrument. For interest rate caps that are designated as cash flow hedges under accounting guidance as it relates to derivative instruments, the change in the fair value of an effective interest rate cap is recorded to accumulated other comprehensive income in equity. Amounts we are entitled to under interest rate caps, if any, are recognized on an accrual basis, and are recorded as a reduction against interest expense in the accompanying condensed consolidated statements of operations.

Our agreements with some of our derivative counterparties provide that (1) we could be declared in default on our derivative obligations if repayment of any of our indebtedness over $75.0 million is accelerated by the lender due to our default on the indebtedness and (2) we could be declared in default on a certain derivative obligation if we default on any of our indebtedness, including a default where repayment of underlying indebtedness has not been accelerated by the lender.

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income (loss) and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During 2012, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The fair value of these derivatives was ($9.4) million and ($5.5) million at September 30, 2012 and December 31, 2011, respectively. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three and nine months ended September 30, 2012 and 2011, respectively, there were no ineffective portions to our interest rate swaps.

Amounts reported in accumulated other comprehensive loss related to interest rate swaps will be reclassified to interest expense as interest payments are made on our debt. As of September 30, 2012, we estimate that an additional $6.3 million will be reclassified as an increase to interest expense during the twelve months ending September 30, 2013, when the hedged forecasted transactions impact earnings.  

As of September 30, 2012 and December 31, 2011, we had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (in thousands):

Notional Amount									Fair Value at Significant Other Observable Inputs (Level 2)
As of September 30, 2012		As of December 31, 2011		Type of Derivative	Strike Rate	Effective Date	Expiration Date		As of September 30, 2012	As of December 31, 2011
$     69,235	(1)	$     66,563	(1)	Swap	2.980	April 6, 2009	Nov. 30, 2013		$         (1,970)	$         (2,363)
13,053	(2)	13,319	(2)	Swap	3.981	May 17, 2006	Jul. 18, 2013		(387)	(583)
9,444	(2)	9,636	(2)	Swap	4.070	Jun. 23, 2006	Jul. 18, 2013		(287)	(435)
8,312	(2)	8,480	(2)	Swap	3.989	Jul. 27, 2006	Oct. 18, 2013		(324)	(432)
-		39,483	(2)	Swap	3.776	Dec. 5, 2006	Jan. 18, 2012	(3)	-	(41)
-		33,946	(2)	Swap	4.000	Dec. 20, 2006	Jan. 18, 2012	(3)	-	(38)
38,580	(2)	38,883	(2)	Swap	2.703	Dec. 3, 2009	Sep. 4, 2014		(1,773)	(1,592)
410,905	(6)	-		Swap	0.717	Various	Various		(4,063)	-
154,391	(7)	-		Swap	0.925	Jul. 6, 2012	Apr. 18, 2017		(554)	-
-		16,163		Cap	4.000	June 24, 2009	June 25, 2012	(4)	-	-
-		20,500		Cap	4.000	Aug. 4, 2010	June 15, 2013	(5)	-	-
$   703,920		$   246,973							$         (9,358)	$         (5,484)

(1) Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.

(2) Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.

(3) The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.  

(4) This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.  

(5) This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.  

(6)	Represents the U.S. Dollar tranche of the unsecured term loan.
(7)	Represents the Singapore Dollar tranche of the unsecured term loan.  Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.

Digital Realty Trust, L.P. [Member]

Derivative Instruments

13. Derivative Instruments

Currently, we use interest rate swaps to manage our interest rate risk. The valuation of these instruments is determined using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves. The fair values of interest rate swaps are determined using the market standard methodology of netting the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates (forward curves) derived from observable market interest rate curves.  

To comply with the provisions of fair value accounting guidance, we incorporate credit valuation adjustments to appropriately reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of our derivative contracts for the effect of nonperformance risk, we have considered the impact of netting and any applicable credit enhancements, such as collateral postings, thresholds, mutual puts, and guarantees.

Although we have determined that the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by us and our counterparties. However, as of December 31, 2011, we have assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and have determined that the credit valuation adjustments are not significant to the overall valuation of our derivatives. As a result, we have determined that our derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. We do not have any fair value measurements on a recurring basis using significant unobservable inputs (Level 3) as of September 30, 2012 or December 31, 2011.

Cash Flow Hedges of Interest Rate Risk

Our objectives in using interest rate derivatives are to add stability to interest expense and to manage our exposure to interest rate movements related to US LIBOR, GBP LIBOR and EURIBOR based mortgage loans as well as the U.S. LIBOR and SGD-SOR based tranches of the unsecured term loan. To accomplish this objective, we primarily use interest rate swaps as part of our interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable-rate amounts from a counterparty in exchange for making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. Under an interest rate cap, if the reference interest rate, such as one-month LIBOR, increases above the cap rate, the holder of the instrument receives a payment based on the notional value of the instrument, the length of the period, and the difference between the current reference rate and the cap rate. If the reference rate increases above the cap rate, the payment received under the interest rate cap will offset the increase in the payments due under the variable rate notes payable.

We record all our interest rate swaps on the condensed consolidated balance sheet at fair value. In determining the fair value of our interest rate swaps, we consider the credit risk of our counterparties. These counterparties are generally larger financial institutions engaged in providing a variety of financial services. These institutions generally face similar risks regarding adverse changes in market and economic conditions, including, but not limited to, fluctuations in interest rates, exchange rates, equity and commodity prices and credit spreads. The current and pervasive disruptions in the financial markets have heightened the risks to these institutions.

Interest rate caps are viewed as a series of call options or caplets which exist for each period the cap agreement is in existence. As each caplet expires, the related cost of the expired caplet is amortized to interest expense with the remaining caplets carried at fair value. The value of interest rate caps is primarily impacted by interest rates, market expectations about interest rates, and the remaining life of the instrument. In general, increases in interest rates, or anticipated increases in interest rates, will increase the value of interest rate caps. As the remaining life of an interest rate cap decreases, the value of the instrument will generally decrease towards zero. The purchase price of an interest rate cap is amortized to interest expense over the contractual life of the instrument. For interest rate caps that are designated as cash flow hedges under accounting guidance as it relates to derivative instruments, the change in the fair value of an effective interest rate cap is recorded to accumulated other comprehensive income in equity. Amounts we are entitled to under interest rate caps, if any, are recognized on an accrual basis, and are recorded as a reduction against interest expense in the accompanying condensed consolidated statements of operations.

Our agreements with some of our derivative counterparties provide that (1) we could be declared in default on our derivative obligations if repayment of any of our indebtedness over $75.0 million is accelerated by the lender due to our default on the indebtedness and (2) we could be declared in default on a certain derivative obligation if we default on any of our indebtedness, including a default where repayment of underlying indebtedness has not been accelerated by the lender.

The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges is recorded in accumulated other comprehensive income (loss) and is subsequently reclassified into earnings in the period that the hedged forecasted transaction affects earnings. During 2012, such derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The fair value of these derivatives was ($9.4) million and ($5.5) million at September 30, 2012 and December 31, 2011, respectively. The ineffective portion of the change in fair value of the derivatives is recognized directly in earnings. During the three and nine months ended September 30, 2012 and 2011, respectively, there were no ineffective portions to our interest rate swaps.

Amounts reported in accumulated other comprehensive loss related to interest rate swaps will be reclassified to interest expense as interest payments are made on our debt. As of September 30, 2012, we estimate that an additional $6.3 million will be reclassified as an increase to interest expense during the twelve months ending September 30, 2013, when the hedged forecasted transactions impact earnings.  

As of September 30, 2012 and December 31, 2011, we had the following outstanding interest rate derivatives that were designated as cash flow hedges of interest rate risk (in thousands):

Notional Amount									Fair Value at Significant Other Observable Inputs (Level 2)
As of September 30, 2012		As of December 31, 2011		Type of Derivative	Strike Rate	Effective Date	Expiration Date		As of September 30, 2012	As of December 31, 2011
$     69,235	(1)	$     66,563	(1)	Swap	2.980	April 6, 2009	Nov. 30, 2013		$         (1,970)	$         (2,363)
13,053	(2)	13,319	(2)	Swap	3.981	May 17, 2006	Jul. 18, 2013		(387)	(583)
9,444	(2)	9,636	(2)	Swap	4.070	Jun. 23, 2006	Jul. 18, 2013		(287)	(435)
8,312	(2)	8,480	(2)	Swap	3.989	Jul. 27, 2006	Oct. 18, 2013		(324)	(432)
-		39,483	(2)	Swap	3.776	Dec. 5, 2006	Jan. 18, 2012	(3)	-	(41)
-		33,946	(2)	Swap	4.000	Dec. 20, 2006	Jan. 18, 2012	(3)	-	(38)
38,580	(2)	38,883	(2)	Swap	2.703	Dec. 3, 2009	Sep. 4, 2014		(1,773)	(1,592)
410,905	(6)	-		Swap	0.717	Various	Various		(4,063)	-
154,391	(7)	-		Swap	0.925	Jul. 6, 2012	Apr. 18, 2017		(554)	-
-		16,163		Cap	4.000	June 24, 2009	June 25, 2012	(4)	-	-
-		20,500		Cap	4.000	Aug. 4, 2010	June 15, 2013	(5)	-	-
$   703,920		$   246,973							$         (9,358)	$         (5,484)

(1) Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.

(2) Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.

(3) The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.  

(4) This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.  

(5) This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.  

(6)	Represents the U.S. Dollar tranche of the unsecured term loan.
(7)	Represents the Singapore Dollar tranche of the unsecured term loan.  Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.

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Derivative Instruments (Tables)

9 Months Ended

Sep. 30, 2012

Schedule Of Outstanding Derivative Instruments

Notional Amount									Fair Value at Significant Other Observable Inputs (Level 2)
As of September 30, 2012		As of December 31, 2011		Type of Derivative	Strike Rate	Effective Date	Expiration Date		As of September 30, 2012	As of December 31, 2011
$     69,235	(1)	$     66,563	(1)	Swap	2.980	April 6, 2009	Nov. 30, 2013		$         (1,970)	$         (2,363)
13,053	(2)	13,319	(2)	Swap	3.981	May 17, 2006	Jul. 18, 2013		(387)	(583)
9,444	(2)	9,636	(2)	Swap	4.070	Jun. 23, 2006	Jul. 18, 2013		(287)	(435)
8,312	(2)	8,480	(2)	Swap	3.989	Jul. 27, 2006	Oct. 18, 2013		(324)	(432)
-		39,483	(2)	Swap	3.776	Dec. 5, 2006	Jan. 18, 2012	(3)	-	(41)
-		33,946	(2)	Swap	4.000	Dec. 20, 2006	Jan. 18, 2012	(3)	-	(38)
38,580	(2)	38,883	(2)	Swap	2.703	Dec. 3, 2009	Sep. 4, 2014		(1,773)	(1,592)
410,905	(6)	-		Swap	0.717	Various	Various		(4,063)	-
154,391	(7)	-		Swap	0.925	Jul. 6, 2012	Apr. 18, 2017		(554)	-
-		16,163		Cap	4.000	June 24, 2009	June 25, 2012	(4)	-	-
-		20,500		Cap	4.000	Aug. 4, 2010	June 15, 2013	(5)	-	-
$   703,920		$   246,973							$         (9,358)	$         (5,484)

(1) Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.

(2) Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.

(3) The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.  

(4) This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.  

(5) This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.  

(6)	Represents the U.S. Dollar tranche of the unsecured term loan.
(7)	Represents the Singapore Dollar tranche of the unsecured term loan.  Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.

Digital Realty Trust, L.P. [Member]

Schedule Of Outstanding Derivative Instruments

Notional Amount									Fair Value at Significant Other Observable Inputs (Level 2)
As of September 30, 2012		As of December 31, 2011		Type of Derivative	Strike Rate	Effective Date	Expiration Date		As of September 30, 2012	As of December 31, 2011
$     69,235	(1)	$     66,563	(1)	Swap	2.980	April 6, 2009	Nov. 30, 2013		$         (1,970)	$         (2,363)
13,053	(2)	13,319	(2)	Swap	3.981	May 17, 2006	Jul. 18, 2013		(387)	(583)
9,444	(2)	9,636	(2)	Swap	4.070	Jun. 23, 2006	Jul. 18, 2013		(287)	(435)
8,312	(2)	8,480	(2)	Swap	3.989	Jul. 27, 2006	Oct. 18, 2013		(324)	(432)
-		39,483	(2)	Swap	3.776	Dec. 5, 2006	Jan. 18, 2012	(3)	-	(41)
-		33,946	(2)	Swap	4.000	Dec. 20, 2006	Jan. 18, 2012	(3)	-	(38)
38,580	(2)	38,883	(2)	Swap	2.703	Dec. 3, 2009	Sep. 4, 2014		(1,773)	(1,592)
410,905	(6)	-		Swap	0.717	Various	Various		(4,063)	-
154,391	(7)	-		Swap	0.925	Jul. 6, 2012	Apr. 18, 2017		(554)	-
-		16,163		Cap	4.000	June 24, 2009	June 25, 2012	(4)	-	-
-		20,500		Cap	4.000	Aug. 4, 2010	June 15, 2013	(5)	-	-
$   703,920		$   246,973							$         (9,358)	$         (5,484)

(1) Translation to U.S. dollars is based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.

(2) Translation to U.S. dollars is based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.

(3) The swap agreements were terminated as the mortgage loans were paid in full at maturity in January 2012.  

(4) This cap agreement was terminated on April 27, 2012 as the mortgage loan was paid in full on April 26, 2012.  

(5) This cap agreement was terminated on May 9, 2012 as the loans were paid in full on May 4, 2012.  

(6)	Represents the U.S. Dollar tranche of the unsecured term loan.
(7)	Represents the Singapore Dollar tranche of the unsecured term loan.  Translation to U.S. dollars is based on exchange rate of $0.81 to 1.00 SGD as of September 30, 2012.

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Related Party Transactions

9 Months Ended

Sep. 30, 2012

Related Party Transactions

15. Related Party Transactions

In December 2006, we entered into ten leases with The tel(x) Group, Inc., or tel(x), pursuant to which tel(x) provides enhanced meet-me-room services to our customers. The initial terms of these leases expire in 2026, and tel(x) has options to extend them through 2046. tel(x) was acquired by GI Partners Fund II, LLP in November 2006, which, collectively with GI Partners Side Fund II, L.P., owned the majority of the outstanding stock of tel(x). Richard Magnuson, our director and Chairman until our 2012 Annual Meeting of Stockholders, or the Annual Meeting, is the chief executive officer of the advisor to GI Partners Fund II, LLP and GI Partners Side Fund II, L.P. During the year ended December 31, 2011, GI Partners Fund II, LLP and GI Partners Side Fund II, L.P completed the sale of tel(x) to an unrelated third party. Our condensed consolidated statements of operations include rental revenues of approximately $12.0 million and $11.4 million from tel(x) for the three months ended September 30, 2012 and 2011, respectively, and approximately $33.7 million and $30.9 million for the nine months ended September 30, 2012 and 2011, respectively, from leases entered into before tel(x) was sold to an unrelated third party. In connection with the lease agreements, we entered into an operating agreement with tel(x), effective as of December 1, 2006, with respect to joint sales and marketing efforts, designation of representatives to manage the national relationship between us and tel(x) and future meet-me-room facilities. As of September 30, 2012 and December 31, 2011, tel(x) leased from us 259,294 square feet under 43 lease agreements and 254,314 square feet under 41 lease agreements, respectively; all but two leases for 4,980 square feet, were entered into prior to the sale of tel(x) to an unrelated third party in September 2011.

We also entered into an agreement with tel(x), effective as of December 1, 2006, with respect to percentage rent arising out of potential future lease agreements for rentable space in buildings covered by the meet-me-room lease agreements. Percentage rent earned during the three months ended September 30, 2012 and 2011 amounted to approximately $1.7 million and $1.4 million, respectively, and $3.1 million and $2.1 million during the nine months ended September 30, 2012 and 2011, respectively. In addition, in connection with the lease agreements, we entered into a management agreement with tel(x), effective as of December 1, 2007, pursuant to which tel(x) agreed to provide us with certain management services in exchange for a management fee of one percent of rents actually collected by tel(x).

We are party to nine leases with SoftLayer, all of which are in place as of September 30, 2012. The initial terms of these leases expire from 2013 to 2025, and SoftLayer has options to extend them from 2018 through 2035. On August 3, 2010, GI Partners Fund III, L.P. acquired a controlling interest in SoftLayer. Richard Magnuson, our director and Chairman until our Annual Meeting, is also a manager of the general partner to GI Partners Fund III, L.P. Our condensed consolidated statements of operations include rental revenues of approximately $19.4 million and $4.7 million from SoftLayer for the three months ended September 30, 2012 and 2011, respectively, and approximately $41.2 million and $11.6 million for the nine months ended September 30, 2012 and 2011, respectively.

Mr. Magnuson did not stand for re-election to our Board of Directors at our Annual Meeting. His term as a member of our Board of Directors and our Chairman ended effective April 23, 2012, the date of the Annual Meeting.

Digital Realty Trust, L.P. [Member]

Related Party Transactions

15. Related Party Transactions

In December 2006, we entered into ten leases with The tel(x) Group, Inc., or tel(x), pursuant to which tel(x) provides enhanced meet-me-room services to our customers. The initial terms of these leases expire in 2026, and tel(x) has options to extend them through 2046. tel(x) was acquired by GI Partners Fund II, LLP in November 2006, which, collectively with GI Partners Side Fund II, L.P., owned the majority of the outstanding stock of tel(x). Richard Magnuson, our director and Chairman until our 2012 Annual Meeting of Stockholders, or the Annual Meeting, is the chief executive officer of the advisor to GI Partners Fund II, LLP and GI Partners Side Fund II, L.P. During the year ended December 31, 2011, GI Partners Fund II, LLP and GI Partners Side Fund II, L.P completed the sale of tel(x) to an unrelated third party. Our condensed consolidated statements of operations include rental revenues of approximately $12.0 million and $11.4 million from tel(x) for the three months ended September 30, 2012 and 2011, respectively, and approximately $33.7 million and $30.9 million for the nine months ended September 30, 2012 and 2011, respectively, from leases entered into before tel(x) was sold to an unrelated third party. In connection with the lease agreements, we entered into an operating agreement with tel(x), effective as of December 1, 2006, with respect to joint sales and marketing efforts, designation of representatives to manage the national relationship between us and tel(x) and future meet-me-room facilities. As of September 30, 2012 and December 31, 2011, tel(x) leased from us 259,294 square feet under 43 lease agreements and 254,314 square feet under 41 lease agreements, respectively; all but two leases for 4,980 square feet, were entered into prior to the sale of tel(x) to an unrelated third party in September 2011.

We also entered into an agreement with tel(x), effective as of December 1, 2006, with respect to percentage rent arising out of potential future lease agreements for rentable space in buildings covered by the meet-me-room lease agreements. Percentage rent earned during the three months ended September 30, 2012 and 2011 amounted to approximately $1.7 million and $1.4 million, respectively, and $3.1 million and $2.1 million during the nine months ended September 30, 2012 and 2011, respectively. In addition, in connection with the lease agreements, we entered into a management agreement with tel(x), effective as of December 1, 2007, pursuant to which tel(x) agreed to provide us with certain management services in exchange for a management fee of one percent of rents actually collected by tel(x).

We are party to nine leases with SoftLayer, all of which are in place as of September 30, 2012. The initial terms of these leases expire from 2013 to 2025, and SoftLayer has options to extend them from 2018 through 2035. On August 3, 2010, GI Partners Fund III, L.P. acquired a controlling interest in SoftLayer. Richard Magnuson, our director and Chairman until our Annual Meeting, is also a manager of the general partner to GI Partners Fund III, L.P. Our condensed consolidated statements of operations include rental revenues of approximately $19.4 million and $4.7 million from SoftLayer for the three months ended September 30, 2012 and 2011, respectively, and approximately $41.2 million and $11.6 million for the nine months ended September 30, 2012 and 2011, respectively.

Mr. Magnuson did not stand for re-election to our Board of Directors at our Annual Meeting. His term as a member of our Board of Directors and our Chairman ended effective April 23, 2012, the date of the Annual Meeting.

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Equity And Accumulated Other Comprehensive Loss, Net (Summary Of Activity For Noncontrolling Interests In The Operating Partnership) (Details)	9 Months Ended
	Sep. 30, 2012
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
As of December 31, 2011	4,936,130
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	(274,000)	[1]
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	(186,192)	[1]
Cancellation of incentive units held by employees and directors	(15,950)
Grant of incentive units to employees and directors	166,080
As of September 30, 2012	4,626,068
Common Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
As of December 31, 2011	3,405,814
Redemption of common units for shares of Digital Realty Trust, Inc. common stock	(274,000)	[1]
As of September 30, 2012	3,131,814
Incentive Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
As of December 31, 2011	1,530,316
Conversion of incentive units held by employees and directors for shares of Digital Realty Trust, Inc. common stock	(186,192)	[1]
Cancellation of incentive units held by employees and directors	(15,950)
Grant of incentive units to employees and directors	166,080
As of September 30, 2012	1,494,254

[1] This redemption was recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid in capital based on the book value per unit in the accompanying condensed consolidated balance sheet of Digital Realty Trust, Inc.

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Condensed Consolidated Statement Of Capital (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012
Balance (units)		106,039,279
Conversion of limited partner common units to general partner common units		$ 4,898,000
Net proceeds from issuance of common stock		859,911,000
Net proceeds from issuance of preferred units		176,071,000
Amortization of unearned compensation regarding share based awards		12,339,000
Net income	56,921,000	160,152,000
Other comprehensive income (loss) - foreign currency translation adjustments	34,985,000	36,286,000
Other comprehensive income (loss) - fair value of interest rate swaps	(3,906,000)	(6,794,000)
Reclassification to interest expense from interest rate swaps	1,174,000	2,964,000
Balance (units)	123,261,390	123,261,390
Digital Realty Trust, L.P. [Member]
Balance		2,580,411,000
Net proceeds from issuance of common stock		859,911,000
Issuance of common units in connection with the exercise of stock options		4,173,000
Net proceeds from issuance of preferred units		176,071,000
Amortization of unearned compensation regarding share based awards		12,339,000
Distributions		(287,896,000)
Purchase of noncontrolling interests in consolidated joint venture		(12,384,000)
Contributions from noncontrolling interests in consolidated joint ventures		2,323,000
Net income	56,921,000	160,152,000
Other comprehensive income (loss) - foreign currency translation adjustments	34,985,000	36,286,000
Other comprehensive income (loss) - fair value of interest rate swaps	(3,906,000)	(6,794,000)
Reclassification to interest expense from interest rate swaps	1,174,000	2,964,000
Balance	3,527,556,000	3,527,556,000
Accumulated Other Comprehensive Loss, Net [Member] | Digital Realty Trust, L.P. [Member]
Balance		(60,067,000)
Other comprehensive income (loss) - foreign currency translation adjustments		36,286,000
Other comprehensive income (loss) - fair value of interest rate swaps		(6,794,000)
Reclassification to interest expense from interest rate swaps		2,964,000
Balance	(27,611,000)	(27,611,000)
Noncontrolling Interests In Consolidated Joint Ventures [Member] | Digital Realty Trust, L.P. [Member]
Balance		12,437,000
Purchase of noncontrolling interests in consolidated joint venture		(10,351,000)
Contributions from noncontrolling interests in consolidated joint ventures		2,323,000
Net income		(437,000)
Balance	3,972,000	3,972,000
General Partner [Member] | Preferred Units [Member] | Digital Realty Trust, L.P. [Member]
Balance		569,781,000
Balance (units)		23,603,419
Net proceeds from issuance of preferred units		176,071,000
Net proceeds from issuance of preferred units		7,300,000
Conversion of convertible preferred stock/units		(169,239,000)
Conversion of convertible preferred stock/units (shares)		(7,005,521)
Distributions		(28,921,000)
Net income		28,921,000
Balance	576,613,000	576,613,000
Balance (units)	23,897,898	23,897,898
General Partner [Member] | Common Units [Member] | Digital Realty Trust, L.P. [Member]
Balance		2,009,016,000
Balance (units)		106,039,279
Conversion of limited partner common units to general partner common units		4,898,000
Conversion of limited partner common units to general partner common units (units)		460,192
Issuance of restricted common units, net of forfeitures (units)		93,276
Net proceeds from issuance of common stock		859,911,000
Net proceeds from issuance of common stock (shares)		12,456,818
Issuance of common units in connection with the exercise of stock options		4,173,000
Issuance of common units in connection with the exercise of stock options (units)		207,550
Conversion of convertible preferred stock/units		169,239,000
Conversion of convertible preferred stock/units (shares)		4,004,275
Amortization of unearned compensation regarding share based awards		12,339,000
Reclassification of vested share based awards		(8,544,000)
Distributions		(248,492,000)
Purchase of noncontrolling interests in consolidated joint venture		(2,033,000)
Net income		126,847,000
Balance	2,927,354,000	2,927,354,000
Balance (units)	123,261,390	123,261,390
Limited Partner [Member] | Common Units [Member] | Digital Realty Trust, L.P. [Member]
Balance		49,244,000
Balance (units)		4,936,130
Conversion of limited partner common units to general partner common units		(4,898,000)
Conversion of limited partner common units to general partner common units (units)		(460,192)
Issuance of common units, net of forfeitures (units)		150,130
Reclassification of vested share based awards		8,544,000
Distributions		(10,483,000)
Net income		4,821,000
Balance	$ 47,228,000	$ 47,228,000
Balance (units)	4,626,068	4,626,068

XML

Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Accounts and other receivables, allowance for doubtful accounts	$ 2,362	$ 2,436
Preferred Stock, par value	$ 0.01	$ 0.01
Preferred Stock, authorized	30,000,000	30,000,000
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, authorized	165,000,000	165,000,000
Common Stock, shares issued	123,261,390	106,039,279
Common Stock, shares outstanding	123,261,390	106,039,279
Series C Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	4.375%	4.375%
Preferred Stock, liquidation preference value	0	128,159
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Stock, issued	0	5,126,364
Preferred Stock, outstanding	0	5,126,364
Series D Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	5.50%	5.50%
Preferred Stock, liquidation preference value	127,447	174,426
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Stock, issued	5,097,898	6,977,055
Preferred Stock, outstanding	5,097,898	6,977,055
Series E Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	7.00%	7.00%
Preferred Stock, liquidation preference value	287,500	287,500
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Stock, issued	11,500,000	11,500,000
Preferred Stock, outstanding	11,500,000	11,500,000
Series F Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	6.625%	6.625%
Preferred Stock, liquidation preference value	182,500	0
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Stock, issued	7,300,000	0
Preferred Stock, outstanding	7,300,000	0
Digital Realty Trust, L.P. [Member]
Accounts and other receivables, allowance for doubtful accounts	2,362	2,436
Common Units, issued	123,261,390	106,039,279
Common Units, outstanding	123,261,390	106,039,279
Limited Partners, common units	3,131,814	3,405,814
Limited Partners, profits interest units	1,075,028	1,054,473
Limited Partners, Class C units outstanding	419,226	475,843
Digital Realty Trust, L.P. [Member] | Series C Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	4.375%	4.375%
Preferred Stock, liquidation preference value	0	128,159
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Units, issued	0	5,126,364
Preferred Units, outstanding	0	5,126,364
Digital Realty Trust, L.P. [Member] | Series D Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	5.50%	5.50%
Preferred Stock, liquidation preference value	127,447	174,426
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Units, issued	5,097,898	6,977,055
Preferred Units, outstanding	5,097,898	6,977,055
Digital Realty Trust, L.P. [Member] | Series E Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	7.00%	7.00%
Preferred Stock, liquidation preference value	287,500	287,500
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Units, issued	11,500,000	11,500,000
Preferred Units, outstanding	11,500,000	11,500,000
Digital Realty Trust, L.P. [Member] | Series F Cumulative Convertible Preferred Units [Member]
Preferred Stock, dividend rate	6.625%	6.625%
Preferred Stock, liquidation preference value	$ 182,500	$ 0
Preferred Stock, liquidation preference per share/unit	$ 25.00	$ 25.00
Preferred Units, issued	7,300,000	0
Preferred Units, outstanding	7,300,000	0

XML

Income Per Unit (Digital Realty Trust, L.P. [Member])

9 Months Ended

Sep. 30, 2012

Digital Realty Trust, L.P. [Member]

Income Per Unit

8. Income per Unit

The following is a summary of basic and diluted income per unit (in thousands, except unit and per unit amounts):

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Net income available to common unitholders	$            47,189	$            33,329	$          131,668	$            99,533
Weighted average units outstanding--basic	126,242,751	105,069,280	117,291,480	100,845,740
Potentially dilutive common units:
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)	-	49,163	-	38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred units	-	914,480	-	308,176
Excess exchange value of the 2026 Debentures	-	-	-	494,292
Weighted average units outstanding--diluted	126,569,841	106,393,387	117,571,189	102,024,779
Income per unit:
Basic	$                0.37	$                0.32	$                1.12	$                0.99
Diluted	$                0.37	$                0.31	$                1.12	$                0.97

During the year ended December 31, 2011, the remaining 2026 Debentures were redeemed and exchanged. On or after July 15, 2026, the 2026 Debentures would have been exchangeable at the then-applicable exchange rate for cash (up to the principal amount of the 2026 Debentures) and, with respect to any excess exchange value, into cash, shares of Digital Realty Trust, Inc. common stock or a combination of cash and shares of Digital Realty Trust, Inc. common stock. Pursuant to the terms of the Operating Partnership’s agreement of limited partnership, the Operating Partnership would have delivered to Digital Realty Trust, Inc. one common unit for each share of common stock issued upon exchange of the 2026 Debentures. The 2026 Debentures also would have been exchangeable prior to July 15, 2026, but only upon the occurrence of certain specified events, including if the weighted average common stock price exceeded a specified strike price as of the end of a fiscal quarter. Using the treasury method, 494,292 common units contingently issuable upon settlement of the excess exchange value were included as potentially dilutive common units in determining diluted earnings per unit for the nine months ended September 30, 2011.  

We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2011	2010
Potentially dilutive 2029 Debentures	6,514,812	6,368,292	6,471,282	6,309,599
Potentially dilutive Series C Cumulative Convertible    Preferred Units	-	2,783,811	1,087,398	3,097,084
Potentially dilutive Series D Cumulative Convertible    Preferred Units	4,219,384	5,603,998	4,309,978	6,775,337
Potentially dilutive Series E Cumulative Redeemable     Preferred Units	4,151,146	-	4,045,501	-
Potentially dilutive Series F Cumulative Redeemable    Preferred Units	2,632,647	-	1,243,998	-
	17,517,989	14,756,101	17,158,157	16,182,020

XML

Document And Entity Information	9 Months Ended
	Sep. 30, 2012	Oct. 31, 2012
Document Type	10-Q
Document Period End Date	Sep. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Registrant Name	Digital Realty Trust, Inc.
Entity Central Index Key	0001297996
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		123,354,511
Digital Realty Trust, L.P. [Member]
Document Period End Date	Sep. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Entity Registrant Name	Digital Realty Trust, L.P.
Entity Central Index Key	0001494877
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer

XML

Income Taxes

9 Months Ended

Sep. 30, 2012

Income Taxes

9. Income Taxes

Digital Realty Trust, Inc. (the Parent Company) has elected to be taxed as a REIT and believes that it has complied with the REIT requirements of the Code. As a REIT, the Parent Company is generally not subject to corporate level federal income taxes on taxable income to the extent it is currently distributed to its stockholders. Since inception, the Parent Company has distributed 100% of its taxable income and intends to do so for the tax year ending December 31, 2012. As such, no provision for federal income taxes has been included in the accompanying condensed consolidated financial statements for the three and nine months ended September 30, 2012 and 2011.  

We have elected taxable REIT subsidiary (TRS) status for some of our consolidated subsidiaries. In general, a TRS may provide services that would otherwise be considered impermissible for REITs and hold assets that REITs cannot hold directly. A TRS is subject to federal income tax as a regular C corporation. Income taxes for TRS entities were accrued, as necessary, for the three and nine months ended September 30, 2012 and 2011.

For our TRS entities and foreign subsidiaries that are subject to U.S. federal, state and foreign income taxes, deferred tax assets and liabilities are established for temporary differences between the financial reporting basis and the tax basis of assets and liabilities at the enacted tax rates expected to be in effect when the temporary differences reverse. A valuation allowance for deferred tax assets is provided if we believe it is more likely than not that the deferred tax asset may not be realized, based on available evidence at the time the determination is made. An increase or decrease in the valuation allowance that results from the change in circumstances that causes a change in our judgment about the realizability of the related deferred tax asset is included in income. Deferred tax assets (net of valuation allowance) and liabilities for our TRS entities and foreign subsidiaries were accrued, as necessary, for the three and nine months ended September 30, 2012 and 2011.

Digital Realty Trust, L.P. [Member]

Income Taxes

9. Income Taxes

Digital Realty Trust, Inc. (the Parent Company) has elected to be taxed as a REIT and believes that it has complied with the REIT requirements of the Code. As a REIT, the Parent Company is generally not subject to corporate level federal income taxes on taxable income to the extent it is currently distributed to its stockholders. Since inception, the Parent Company has distributed 100% of its taxable income and intends to do so for the tax year ending December 31, 2012. As such, no provision for federal income taxes has been included in the accompanying condensed consolidated financial statements for the three and nine months ended September 30, 2012 and 2011.  

We have elected taxable REIT subsidiary (TRS) status for some of our consolidated subsidiaries. In general, a TRS may provide services that would otherwise be considered impermissible for REITs and hold assets that REITs cannot hold directly. A TRS is subject to federal income tax as a regular C corporation. Income taxes for TRS entities were accrued, as necessary, for the three and nine months ended September 30, 2012 and 2011.

For our TRS entities and foreign subsidiaries that are subject to U.S. federal, state and foreign income taxes, deferred tax assets and liabilities are established for temporary differences between the financial reporting basis and the tax basis of assets and liabilities at the enacted tax rates expected to be in effect when the temporary differences reverse. A valuation allowance for deferred tax assets is provided if we believe it is more likely than not that the deferred tax asset may not be realized, based on available evidence at the time the determination is made. An increase or decrease in the valuation allowance that results from the change in circumstances that causes a change in our judgment about the realizability of the related deferred tax asset is included in income. Deferred tax assets (net of valuation allowance) and liabilities for our TRS entities and foreign subsidiaries were accrued, as necessary, for the three and nine months ended September 30, 2012 and 2011.

XML

Incentive Plan (Summary Of Stock Options Outstanding And Exercisable) (Details) (USD $)	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding	129,909	337,760
Weighted average remaining contractual life (years), Outstanding	3 years 8 months 12 days
Weighted average exercise price, Outstanding	$ 30.62
Aggregate intrinsic value, Outstanding	$ 5,096,342
Number exercisable	129,909
Weighted average remaining contractual life (years), Exercisable	3 years 8 months 12 days
Weighted average exercise price, Exercisable	$ 30.62
Aggregate intrinsic value, Exercisable	5,096,342
$12.00-13.02 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding	34,870
Weighted average remaining contractual life (years), Outstanding	2 years 29 days
Weighted average exercise price, Outstanding	$ 12.00
Aggregate intrinsic value, Outstanding	2,017,230
Number exercisable	34,870
Weighted average remaining contractual life (years), Exercisable	2 years 29 days
Weighted average exercise price, Exercisable	$ 12.00
Aggregate intrinsic value, Exercisable	2,017,230
$20.37-28.09 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding	17,000
Weighted average remaining contractual life (years), Outstanding	3 years 1 month 21 days
Weighted average exercise price, Outstanding	$ 21.28
Aggregate intrinsic value, Outstanding	825,720
Number exercisable	17,000
Weighted average remaining contractual life (years), Exercisable	3 years 1 month 21 days
Weighted average exercise price, Exercisable	$ 21.28
Aggregate intrinsic value, Exercisable	825,720
$33.18-41.73 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number outstanding	78,039
Weighted average remaining contractual life (years), Outstanding	4 years 6 months 15 days
Weighted average exercise price, Outstanding	$ 40.97
Aggregate intrinsic value, Outstanding	2,253,392
Number exercisable	78,039
Weighted average remaining contractual life (years), Exercisable	4 years 6 months 15 days
Weighted average exercise price, Exercisable	$ 40.97
Aggregate intrinsic value, Exercisable	$ 2,253,392
Minimum [Member] | $12.00-13.02 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	$ 12.00
Minimum [Member] | $20.37-28.09 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	$ 20.37
Minimum [Member] | $33.18-41.73 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	$ 33.18
Maximum [Member] | $12.00-13.02 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	$ 13.02
Maximum [Member] | $20.37-28.09 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	$ 28.09
Maximum [Member] | $33.18-41.73 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Weighted average exercise price, Exercisable	$ 41.73

XML

Condensed Consolidated Income Statements (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Operating Revenues:
Rental	$ 260,052	$ 206,846	$ 717,809	$ 606,447
Tenant reimbursements	78,878	56,656	197,162	159,801
Construction management	2,497	9,372	6,903	24,948
Other	1,052	602	7,457	902
Total operating revenues	342,479	273,476	929,331	792,098
Operating Expenses:
Rental property operating and maintenance	106,660	82,164	274,081	226,224
Property taxes	17,982	13,055	49,793	40,488
Insurance	2,463	1,961	6,953	6,010
Construction management	623	7,391	1,412	20,327
Depreciation and amortization	101,840	79,047	274,835	229,813
General and administrative	14,409	14,600	43,768	41,082
Transactions	504	3,632	5,789	5,053
Other	923		1,260	90
Total operating expenses	245,404	201,850	657,891	569,087
Operating income	97,075	71,626	271,440	223,011
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	1,520	1,390	6,402	3,656
Interest and other income	83	2,218	2,008	2,862
Interest expense	(41,047)	(37,078)	(116,758)	(112,494)
Tax expense	(710)	(461)	(2,637)	(1,122)
Loss from early extinguishment of debt		(6)	(303)	(984)
Net income	56,921	37,689	160,152	114,929
Net income attributable to noncontrolling interests	(1,529)	(1,345)	(4,384)	(4,380)
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	(55,392)	(36,344)	(155,768)	(110,549)
Preferred stock dividends/Preferred units distributions	(9,777)	(4,436)	(28,921)	(15,671)
Net income available to common stockholders/unitholders	45,615	31,908	126,847	94,878
Net income per share/unit available to common stockholders/unitholders:
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97
Weighted average common shares/units outstanding:
Basic	122,026,421	100,588,235	112,995,512	96,137,611
Diluted	122,353,511	101,912,342	113,275,221	97,316,650
Digital Realty Trust, L.P. [Member]
Operating Revenues:
Rental	260,052	206,846	717,809	606,447
Tenant reimbursements	78,878	56,656	197,162	159,801
Construction management	2,497	9,372	6,903	24,948
Other	1,052	602	7,457	902
Total operating revenues	342,479	273,476	929,331	792,098
Operating Expenses:
Rental property operating and maintenance	106,660	82,164	274,081	226,224
Property taxes	17,982	13,055	49,793	40,488
Insurance	2,463	1,961	6,953	6,010
Construction management	623	7,391	1,412	20,327
Depreciation and amortization	101,840	79,047	274,835	229,813
General and administrative	14,409	14,600	43,768	41,082
Transactions	504	3,632	5,789	5,053
Other	923		1,260	90
Total operating expenses	245,404	201,850	657,891	569,087
Operating income	97,075	71,626	271,440	223,011
Other Income (Expenses):
Equity in earnings of unconsolidated joint ventures	1,520	1,390	6,402	3,656
Interest and other income	83	2,218	2,008	2,862
Interest expense	(41,047)	(37,078)	(116,758)	(112,494)
Tax expense	(710)	(461)	(2,637)	(1,122)
Loss from early extinguishment of debt		(6)	(303)	(984)
Net income	56,921	37,689	160,152	114,929
Net loss attributable to noncontrolling interests in consolidated joint ventures	45	76	437	275
Net income attributable to Digital Realty Trust, Inc./Digital Realty Trust, L.P.	56,966	37,765	160,589	115,204
Preferred stock dividends/Preferred units distributions	(9,777)	(4,436)	(28,921)	(15,671)
Net income available to common stockholders/unitholders	$ 47,189	$ 33,329	$ 131,668	$ 99,533
Net income per share/unit available to common stockholders/unitholders:
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97
Weighted average common shares/units outstanding:
Basic	126,242,751	105,069,280	117,291,480	100,845,740
Diluted	126,569,841	106,393,387	117,571,189	102,024,779

XML

Investments In Real Estate

9 Months Ended

Sep. 30, 2012

Investments In Real Estate

3. Investments in Real Estate

We acquired the following real estate properties during the nine months ended September 30, 2012:

Location	Metropolitan Area	Date Acquired	Amount (in millions)
Convergence Business Park (1)	Dallas, Texas	February 22, 2012	$              123.0
9333, 9355, 9377 Grand Avenue (2)	Chicago, Illinois	May 10, 2012	22.3
8025 North Interstate 35 (3)	Austin, Texas	May 18, 2012	12.5
400 S. Akard Street	Dallas, Texas	June 13, 2012	75.0
Sentrum Portfolio (4)	London, England	July 11, 2012	1,138.6
11900 East Cornell Avenue	Denver, Colorado	September 14, 2012	90.8
			$           1,462.2

(1) Convergence Business Park is comprised of nine buildings along with undeveloped land. It is considered one property for our property count.

(2) 9333, 9355, 9377 Grand Avenue is comprised of three buildings. It is considered one property for our property count.

(3) In connection with the acquisition, we assumed a $6.7 million secured mortgage loan.

(4)    On July 11, 2012, we completed the acquisition of a three-property data center portfolio, totaling approximately 733,000 square feet, located in the greater London area, referred to as the Sentrum Portfolio. The purchase price was £734.6 million (equivalent to approximately $1.1 billion based on the July 11, 2012 exchange rate of £1.00 to $1.55), which includes an £18.7 million (equivalent to approximately $29.0 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) adjustment in the purchase price to reflect amounts associated with the early repayment of property debt.  In addition, non-cash consideration of £56.5 million (or $87.6 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) was recorded as the expected fair value of contingent consideration as required by prevailing accounting guidance.  There was also a non-cash purchase adjustment related to deferred taxes, which amounted to £68.6 million (or $106.3 million based on the July 11, 2012 exchange rate of £1.00 to $1.55).  The purchase price was paid in cash funded with proceeds from our common stock offering in July 2012 along with borrowings under our global revolving credit facility.

The Sentrum Portfolio’s aggregate acquisition consideration was allocated as follows, subject to adjustment: $18.1 million to land, $7.0 million to acquired ground lease, $1.2  billion to buildings and improvements, $11.6 million to tenant improvements, $151.6 million to identified intangible assets ($107.2 million associated with in place leases and $44.4 million associated with above market leases) and $38.2 million to identified intangible liabilities associated with below market leases.

Operating revenues of $28.4 million and operating income of $6.8 million from the Sentrum Portfolio are included in the condensed consolidated income statement for the three and nine months ended September 30, 2012.  

The following summarizes the expected weighted average remaining lives of acquired intangible assets and liabilities for the Sentrum Portfolio as of September 30, 2012:  

	Sentrum Portfolio
Acquired in place lease value		11.5 years
Acquired above market leases		7.3 years
Acquired below market leases		11.0 years

The pro forma operating revenues and operating income of the  Company, including the Sentrum Portfolio had the acquisition taken place on January 1, 2011 for the following periods are as follows:

	Three months ended				Nine months ended
	Operating Revenues		Operating Income		Operating Revenues		Operating Income
	(in millions)				(in millions)
Supplemental pro forma for the periods ended September 30, 2012(1)	$	345.9	$	98.4	$	995.9	$	297.8
Supplemental pro forma for the periods ended September 30, 2011(1)		305.4		84.1		887.1		260.5

⁽¹⁾ These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisition occurred on January 1, 2011, and may not be indicative of future operating results. The pro forma results exclude transaction expenses.

In March 2012, we entered into a joint venture with Savvis, Inc., a CenturyLink company. On June 26, 2012, this unconsolidated joint venture acquired a 164,000 square foot property in Hong Kong. The property is located at Tseung Kwan O Industrial Estate in New Territories, approximately 12 miles from downtown Hong Kong. As of September 30, 2012, we have contributed approximately $20.6 million to the joint venture.

Digital Realty Trust, L.P. [Member]

Investments In Real Estate

3. Investments in Real Estate

We acquired the following real estate properties during the nine months ended September 30, 2012:

Location	Metropolitan Area	Date Acquired	Amount (in millions)
Convergence Business Park (1)	Dallas, Texas	February 22, 2012	$              123.0
9333, 9355, 9377 Grand Avenue (2)	Chicago, Illinois	May 10, 2012	22.3
8025 North Interstate 35 (3)	Austin, Texas	May 18, 2012	12.5
400 S. Akard Street	Dallas, Texas	June 13, 2012	75.0
Sentrum Portfolio (4)	London, England	July 11, 2012	1,138.6
11900 East Cornell Avenue	Denver, Colorado	September 14, 2012	90.8
			$           1,462.2

(1) Convergence Business Park is comprised of nine buildings along with undeveloped land. It is considered one property for our property count.

(2) 9333, 9355, 9377 Grand Avenue is comprised of three buildings. It is considered one property for our property count.

(3) In connection with the acquisition, we assumed a $6.7 million secured mortgage loan.

(4)    On July 11, 2012, we completed the acquisition of a three-property data center portfolio, totaling approximately 733,000 square feet, located in the greater London area, referred to as the Sentrum Portfolio. The purchase price was £734.6 million (equivalent to approximately $1.1 billion based on the July 11, 2012 exchange rate of £1.00 to $1.55), which includes an £18.7 million (equivalent to approximately $29.0 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) adjustment in the purchase price to reflect amounts associated with the early repayment of property debt.  In addition, non-cash consideration of £56.5 million (or $87.6 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) was recorded as the expected fair value of contingent consideration as required by prevailing accounting guidance.  There was also a non-cash purchase adjustment related to deferred taxes, which amounted to £68.6 million (or $106.3 million based on the July 11, 2012 exchange rate of £1.00 to $1.55).  The purchase price was paid in cash funded with proceeds from our common stock offering in July 2012 along with borrowings under our global revolving credit facility.

The Sentrum Portfolio’s aggregate acquisition consideration was allocated as follows, subject to adjustment: $18.1 million to land, $7.0 million to acquired ground lease, $1.2  billion to buildings and improvements, $11.6 million to tenant improvements, $151.6 million to identified intangible assets ($107.2 million associated with in place leases and $44.4 million associated with above market leases) and $38.2 million to identified intangible liabilities associated with below market leases.

Operating revenues of $28.4 million and operating income of $6.8 million from the Sentrum Portfolio are included in the condensed consolidated income statement for the three and nine months ended September 30, 2012.  

The following summarizes the expected weighted average remaining lives of acquired intangible assets and liabilities for the Sentrum Portfolio as of September 30, 2012:  

	Sentrum Portfolio
Acquired in place lease value		11.5 years
Acquired above market leases		7.3 years
Acquired below market leases		11.0 years

The pro forma operating revenues and operating income of the  Company, including the Sentrum Portfolio had the acquisition taken place on January 1, 2011 for the following periods are as follows:

	Three months ended				Nine months ended
	Operating Revenues		Operating Income		Operating Revenues		Operating Income
	(in millions)				(in millions)
Supplemental pro forma for the periods ended September 30, 2012(1)	$	345.9	$	98.4	$	995.9	$	297.8
Supplemental pro forma for the periods ended September 30, 2011(1)		305.4		84.1		887.1		260.5

⁽¹⁾ These unaudited pro forma results do not purport to be indicative of what operating results would have been had the acquisition occurred on January 1, 2011, and may not be indicative of future operating results. The pro forma results exclude transaction expenses.

In March 2012, we entered into a joint venture with Savvis, Inc., a CenturyLink company. On June 26, 2012, this unconsolidated joint venture acquired a 164,000 square foot property in Hong Kong. The property is located at Tseung Kwan O Industrial Estate in New Territories, approximately 12 miles from downtown Hong Kong. As of September 30, 2012, we have contributed approximately $20.6 million to the joint venture.

XML

Summary Of Significant Accounting Policies

9 Months Ended

Sep. 30, 2012

Summary Of Significant Accounting Policies

2. Summary of Significant Accounting Policies

(a) Principles of Consolidation and Basis of Presentation

The accompanying interim condensed consolidated financial statements include all of the accounts of Digital Realty Trust, Inc., the Operating Partnership and the subsidiaries of the Operating Partnership. Intercompany balances and transactions have been eliminated.

The accompanying interim condensed consolidated financial statements are unaudited, but have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) for interim financial information and in compliance with the rules and regulations of the United States Securities and Exchange Commission. Accordingly, they do not include all of the disclosures required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments necessary for a fair presentation have been included. All such adjustments are considered to be of a normal recurring nature, except as otherwise indicated. The results of operations for the interim periods are not necessarily indicative of the results to be obtained for the full fiscal year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our annual report on Form 10-K for the year ended December 31, 2011.

The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide the following benefits:

• enhancing investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;

• eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and

• creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.

There are few differences between the Company and the Operating Partnership, which are reflected in these condensed consolidated financial statements. We believe it is important to understand the differences between the Company and the Operating Partnership in the context of how we operate as an interrelated consolidated company. Digital Realty Trust, Inc.’s only material asset is its ownership of partnership interests of the Operating Partnership. As a result, Digital Realty Trust, Inc. does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing public equity from time to time and guaranteeing certain unsecured debt of the Operating Partnership. Digital Realty Trust, Inc. itself does not hold any indebtedness but guarantees the unsecured debt of the Operating Partnership and certain of its subsidiaries, as disclosed in these notes. The Operating Partnership holds substantially all the assets of the Company and holds the ownership interests in the Company’s joint ventures. The Operating Partnership conducts the operations ofthe business and is structured as a partnership with no publicly traded equity. Except for net proceeds from public equity issuances by Digital Realty Trust, Inc., which are generally contributed to the Operating Partnership in exchange for partnership units, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, by the Operating Partnership’s direct or indirect incurrence of indebtedness or through the issuance of partnership units.

The presentation of noncontrolling interests in operating partnership, stockholder’s equity and partners’ capital are the main areas of difference between the condensed consolidated financial statements of Digital Realty Trust, Inc. and those of the Operating Partnership. The common limited partnership interests held by the limited partners in the Operating Partnership are presented as limited partners’ capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as noncontrolling interests in operating partnership within equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The common and preferred partnership interests held by Digital Realty Trust, Inc. in the Operating Partnership are presented as general partner’s capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as preferred stock, common stock, additional paid-in capital and accumulated dividends in excess of earnings within stockholders’ equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The differences in the presentations between stockholders’ equity and partners’ capital result from the differences in the equity issued at the Digital Realty Trust, Inc. and the Operating Partnership levels.

To help investors understand the significant differences between the Company and the Operating Partnership, these condensed consolidated financial statements present the following separate sections for each of the Company and the Operating Partnership:

• condensed consolidated face financial statements; and

• the following notes to the condensed consolidated financial statements:

• Debt of the Company and Debt of the Operating Partnership;

• Income per Share and Income per Unit; and

• Equity and Accumulated Other Comprehensive Loss, Net of the Company and Capital and Comprehensive Income of the Operating Partnership.

In the sections that combine disclosure of Digital Realty Trust, Inc. and the Operating Partnership, these notes refer to actions or holdings as being actions or holdings of the Company. Although the Operating Partnership is generally the entity that enters into contracts and joint ventures and holds assets and debt, reference to the Company is appropriate because the business is one enterprise and the Company operates the business through the Operating Partnership.  

(b) Cash Equivalents

For the purpose of the condensed consolidated statements of cash flows, we consider short-term investments with original maturities of 90 days or less to be cash equivalents. As of September 30, 2012, cash equivalents consist of investments in money market instruments.

(c) Share Based Compensation

We account for share based compensation using the fair value method of accounting. The estimated fair value of the stock options granted by us is being amortized on a straight-line basis over the vesting period of the stock options. The estimated fair value of the long-term incentive units and Class C Units (discussed in note 12(b)) granted by us is being amortized on a straight-line basis over the expected service period.

For share based compensation awards with performance conditions, we estimate the fair value of the award for each of the possible performance condition outcomes and amortize the compensation cost based on management’s projected performance outcome. In the instance management’s projected performance outcome changes prior to the final measurement date, compensation cost is adjusted accordingly.

(d) Income Taxes

Digital Realty Trust, Inc. (the Parent Company) has elected to be treated and believes that it has been organized and has operated in a manner that has enabled the Parent Company to qualify as a REIT for federal income tax purposes. As a REIT, the Parent Company generally is not required to pay federal corporate income taxes on its taxable income to the extent it is currently distributed to its stockholders.

However, qualification and taxation as a REIT depend upon the Parent Company’s ability to meet the various qualification tests imposed under the Internal Revenue Code of 1986, as amended (the Code), including tests related to annual operating results, asset composition, distribution levels and diversity of stock ownership. Accordingly, no assurance can be given that the Parent Company has been organized or has operated or will continue to operate in a manner so as to qualify or remain qualified as a REIT. If the Parent Company fails to qualify as a REIT in any taxable year, it will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates.

The Operating Partnership is a partnership and is not required to pay federal income tax. Instead, taxable income is allocated to its partners, who include such amounts on their federal income tax returns. As such, no provision for federal income taxes has been included in the Operating Partnership’s accompanying condensed consolidated financial statements.

Even if the Parent Company and the Operating Partnership are not subject to federal income taxes, they are taxed in certain states in which they operate. The Company is also taxed in non-U.S. countries where it operates that do not recognize U.S. REITs under their respective tax laws. The Company’s consolidated taxable REIT subsidiary is subject to both federal and state income taxes to the extent there is taxable income. Accordingly, the Company recognizes and accrues income taxes for its taxable REIT subsidiary, certain states and non-U.S. jurisdictions, as appropriate.

We assess our significant tax positions in accordance with U.S. GAAP for all open tax years and determine whether we have any material unrecognized liabilities from uncertain tax benefits. If a tax position is not considered “more-likely-than-not” to be sustained solely on its technical merits, no benefits of the tax position are to be recognized (for financial statement purposes). As of September 30, 2012 and December 31, 2011, we have no assets or liabilities for uncertain tax positions. We classify interest and penalties from significant uncertain tax positions as interest expense and operating expense, respectively, in our condensed consolidated statements of operations. For the three and nine months ended September 30, 2012 and 2011, we had no such interest or penalties. The tax years 2009 through 2011 remain open to examination by the major taxing jurisdictions with which the Parent Company and its subsidiaries file tax returns.

See Note 9 for further discussion on income taxes.

(e) Presentation of Transactional-based Taxes

We account for transactional-based taxes, such as value added tax, or VAT, for our international properties on a net basis.

(f) Asset Retirement Obligations

We record accruals for estimated retirement obligations as required by current accounting guidance. The amount of asset retirement obligations relates primarily to estimated asbestos removal costs at the end of the economic life of properties that were built before 1984. As of September 30, 2012 and December 31, 2011, the amount included in accounts payable and other accrued liabilities on our condensed consolidated balance sheets was approximately $1.7 million and $1.2 million, respectively.

(g) Construction Management Revenue

Construction management revenue for long-term contracts are recognized under the percentage-of-completion method of accounting. Revenues are determined by measuring the percentage of total costs incurred to date to estimated total costs for each construction management contract based on current estimates of costs to complete. Contract costs include all labor and benefits, materials, subcontracts, and an allocation of indirect costs related to contract performance. Indirect costs are allocated to projects based upon labor hours charged. Third party costs are included in construction management expense and their reimbursements are included in construction management revenue to the extent that the Company is the primary obligor for the third party costs.  Otherwise, construction management revenue and expense is reflected net of third party costs.  As long-term design-build projects extend over one or more years, revisions in cost and estimated earnings during the course of the work are reflected in the accounting period in which the facts which require the revision become known. At the time a loss on a design-build project becomes known, the entire amount of the estimated loss is recognized in the condensed consolidated financial statements. Change orders are recognized when they are approved by the client.

Costs and estimated earnings in excess of billings on uncompleted construction management projects are included in other assets in the condensed consolidated balance sheets. Billings in excess of costs and estimated earnings on uncompleted construction management projects are included in accounts payable and other accrued liabilities in the condensed consolidated balance sheets. Customers are billed on a monthly basis at the end of each month, which can be in advance of work performed.

(h) Assets and Liabilities Measured at Fair Value

Fair value under U.S. GAAP is a market-based measurement, not an entity-specific measurement. Therefore, our fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair-value measurements, we use a fair-value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair-value measurement is based on inputs from different levels of the fair-value hierarchy, the level in the fair-value hierarchy within which the entire fair-value measurement falls is based on the lowest level input that is significant to the fair-value measurement in its entirety. Our assessment of the significance of a particular input to the fair-value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.

(i) Transactions Expense

Transactions expense includes acquisition-related expenses and other business development expenses, which are expensed as incurred. Acquisition-related expenses include closing costs, broker commissions and other professional fees, including legal and accounting fees related to acquisitions and potential acquisitions.

(j) Capitalization of Costs

Direct and indirect project costs that are clearly associated with the development and redevelopment of properties are capitalized as incurred. Project costs include all costs directly associated with the development or redevelopment of a property, including construction costs, interest, property taxes, insurance, legal fees and costs of personnel working on the project. Indirect costs that do not clearly relate to the projects under development/redevelopment are not capitalized and are charged to expense as incurred.

Capitalization of costs begins when the activities necessary to get the development/redevelopment project ready for its intended use begins, which include costs incurred before the beginning of construction. Capitalization of costs ceases when the development/redevelopment project is substantially complete and ready for its intended use. Determining when a development/redevelopment project commences, and when it is substantially complete and ready for its intended use involves a degree of judgment. We generally consider a development/redevelopment project to be substantially complete and ready for its intended use upon commissioning, which is when the redeveloped/developed project has been tested at full load, or receipt of a certificate of occupancy. We cease cost capitalization if activities necessary for the development/redevelopment of the property have been suspended. Capitalized costs are allocated to the specific components of a project that are benefited.

During the three months ended September 30, 2012 and 2011, we capitalized interest of approximately $4.5 million and $4.8 million, respectively, and $13.6 million and $13.6 million during the nine months ended September 30, 2012 and 2011, respectively. During the three months ended September 30, 2012 and 2011, we capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $8.0 million and $6.5 million, respectively, and $23.3 million and $18.8 million during the nine months ended September 30, 2012 and 2011, respectively. Cash flows from capitalized leasing costs of $26.5 million and $19.1 million are included in improvements to and advances for investments in real estate in cash flows from investing activities in the condensed consolidated statements of cash flows for the nine months ended September 30, 2012 and 2011, respectively.

(k) Management’s Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates made. On an on-going basis, we evaluate our estimates, including those related to the valuation of our real estate properties, accounts receivable and deferred rent receivable, performance-based equity compensation plans, the completeness of accrued liabilities and Digital Realty Trust, Inc.’s qualification as a REIT. We base our estimates on historical experience, current market conditions, and various other assumptions that are believed to be reasonable under the circumstances. Actual results may vary from those estimates and those estimates could vary under different assumptions or conditions.

(l) Segment Information

All of our properties generate similar revenues and expenses related to tenant rent and reimbursements and operating expenses. The delivery of our products is consistent across all properties and although services are provided to a wide range of customers, the types of services provided to them are limited to a few core principles. As such, the properties in our portfolio have similar economic characteristics and the nature of the products and services provided to our customers and the method to distribute such services are consistent throughout the portfolio. Consequently, our properties qualify for aggregation into one reporting segment.

(m) Recent Accounting Pronouncements

In May 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2011-04, Fair Value Measurement (Topic 820). This ASU is intended to create consistency between U.S. GAAP and International Financial Reporting Standards on the definition of fair value and on the guidance on how to measure fair value and on what to disclose about fair value measurements. We adopted this accounting guidance for financial statements issued for fiscal periods beginning after December 15, 2011. This update did not have a material effect on our financial statements.

In June 2011, the FASB issued ASU No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income (“ASU 2011-05”). This update amends Accounting Standards Codification (“ASC”) Topic 220, Comprehensive Income, to provide that total comprehensive income will be reported in one continuous statement or two separate but consecutive statements of financial performance. Presentation of total comprehensive income in the statement of stockholders’ equity (or statement of capital) or the footnotes will no longer be allowed. The calculation of net income and basic and diluted net income per share (or per unit) was not affected. ASU 2011-05 is effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2011. This update did not have a material effect on our financial statements.

Digital Realty Trust, L.P. [Member]

Summary Of Significant Accounting Policies

2. Summary of Significant Accounting Policies

(a) Principles of Consolidation and Basis of Presentation

The accompanying interim condensed consolidated financial statements include all of the accounts of Digital Realty Trust, Inc., the Operating Partnership and the subsidiaries of the Operating Partnership. Intercompany balances and transactions have been eliminated.

The accompanying interim condensed consolidated financial statements are unaudited, but have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) for interim financial information and in compliance with the rules and regulations of the United States Securities and Exchange Commission. Accordingly, they do not include all of the disclosures required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments necessary for a fair presentation have been included. All such adjustments are considered to be of a normal recurring nature, except as otherwise indicated. The results of operations for the interim periods are not necessarily indicative of the results to be obtained for the full fiscal year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our annual report on Form 10-K for the year ended December 31, 2011.

The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide the following benefits:

• enhancing investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;

• eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and

• creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.

There are few differences between the Company and the Operating Partnership, which are reflected in these condensed consolidated financial statements. We believe it is important to understand the differences between the Company and the Operating Partnership in the context of how we operate as an interrelated consolidated company. Digital Realty Trust, Inc.’s only material asset is its ownership of partnership interests of the Operating Partnership. As a result, Digital Realty Trust, Inc. does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing public equity from time to time and guaranteeing certain unsecured debt of the Operating Partnership. Digital Realty Trust, Inc. itself does not hold any indebtedness but guarantees the unsecured debt of the Operating Partnership and certain of its subsidiaries, as disclosed in these notes. The Operating Partnership holds substantially all the assets of the Company and holds the ownership interests in the Company’s joint ventures. The Operating Partnership conducts the operations ofthe business and is structured as a partnership with no publicly traded equity. Except for net proceeds from public equity issuances by Digital Realty Trust, Inc., which are generally contributed to the Operating Partnership in exchange for partnership units, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, by the Operating Partnership’s direct or indirect incurrence of indebtedness or through the issuance of partnership units.

The presentation of noncontrolling interests in operating partnership, stockholder’s equity and partners’ capital are the main areas of difference between the condensed consolidated financial statements of Digital Realty Trust, Inc. and those of the Operating Partnership. The common limited partnership interests held by the limited partners in the Operating Partnership are presented as limited partners’ capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as noncontrolling interests in operating partnership within equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The common and preferred partnership interests held by Digital Realty Trust, Inc. in the Operating Partnership are presented as general partner’s capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as preferred stock, common stock, additional paid-in capital and accumulated dividends in excess of earnings within stockholders’ equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The differences in the presentations between stockholders’ equity and partners’ capital result from the differences in the equity issued at the Digital Realty Trust, Inc. and the Operating Partnership levels.

To help investors understand the significant differences between the Company and the Operating Partnership, these condensed consolidated financial statements present the following separate sections for each of the Company and the Operating Partnership:

• condensed consolidated face financial statements; and

• the following notes to the condensed consolidated financial statements:

• Debt of the Company and Debt of the Operating Partnership;

• Income per Share and Income per Unit; and

• Equity and Accumulated Other Comprehensive Loss, Net of the Company and Capital and Comprehensive Income of the Operating Partnership.

In the sections that combine disclosure of Digital Realty Trust, Inc. and the Operating Partnership, these notes refer to actions or holdings as being actions or holdings of the Company. Although the Operating Partnership is generally the entity that enters into contracts and joint ventures and holds assets and debt, reference to the Company is appropriate because the business is one enterprise and the Company operates the business through the Operating Partnership.  

(b) Cash Equivalents

For the purpose of the condensed consolidated statements of cash flows, we consider short-term investments with original maturities of 90 days or less to be cash equivalents. As of September 30, 2012, cash equivalents consist of investments in money market instruments.

(c) Share Based Compensation

We account for share based compensation using the fair value method of accounting. The estimated fair value of the stock options granted by us is being amortized on a straight-line basis over the vesting period of the stock options. The estimated fair value of the long-term incentive units and Class C Units (discussed in note 12(b)) granted by us is being amortized on a straight-line basis over the expected service period.

For share based compensation awards with performance conditions, we estimate the fair value of the award for each of the possible performance condition outcomes and amortize the compensation cost based on management’s projected performance outcome. In the instance management’s projected performance outcome changes prior to the final measurement date, compensation cost is adjusted accordingly.

(d) Income Taxes

Digital Realty Trust, Inc. (the Parent Company) has elected to be treated and believes that it has been organized and has operated in a manner that has enabled the Parent Company to qualify as a REIT for federal income tax purposes. As a REIT, the Parent Company generally is not required to pay federal corporate income taxes on its taxable income to the extent it is currently distributed to its stockholders.

However, qualification and taxation as a REIT depend upon the Parent Company’s ability to meet the various qualification tests imposed under the Internal Revenue Code of 1986, as amended (the Code), including tests related to annual operating results, asset composition, distribution levels and diversity of stock ownership. Accordingly, no assurance can be given that the Parent Company has been organized or has operated or will continue to operate in a manner so as to qualify or remain qualified as a REIT. If the Parent Company fails to qualify as a REIT in any taxable year, it will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates.

The Operating Partnership is a partnership and is not required to pay federal income tax. Instead, taxable income is allocated to its partners, who include such amounts on their federal income tax returns. As such, no provision for federal income taxes has been included in the Operating Partnership’s accompanying condensed consolidated financial statements.

Even if the Parent Company and the Operating Partnership are not subject to federal income taxes, they are taxed in certain states in which they operate. The Company is also taxed in non-U.S. countries where it operates that do not recognize U.S. REITs under their respective tax laws. The Company’s consolidated taxable REIT subsidiary is subject to both federal and state income taxes to the extent there is taxable income. Accordingly, the Company recognizes and accrues income taxes for its taxable REIT subsidiary, certain states and non-U.S. jurisdictions, as appropriate.

We assess our significant tax positions in accordance with U.S. GAAP for all open tax years and determine whether we have any material unrecognized liabilities from uncertain tax benefits. If a tax position is not considered “more-likely-than-not” to be sustained solely on its technical merits, no benefits of the tax position are to be recognized (for financial statement purposes). As of September 30, 2012 and December 31, 2011, we have no assets or liabilities for uncertain tax positions. We classify interest and penalties from significant uncertain tax positions as interest expense and operating expense, respectively, in our condensed consolidated statements of operations. For the three and nine months ended September 30, 2012 and 2011, we had no such interest or penalties. The tax years 2009 through 2011 remain open to examination by the major taxing jurisdictions with which the Parent Company and its subsidiaries file tax returns.

See Note 9 for further discussion on income taxes.

(e) Presentation of Transactional-based Taxes

We account for transactional-based taxes, such as value added tax, or VAT, for our international properties on a net basis.

(f) Asset Retirement Obligations

We record accruals for estimated retirement obligations as required by current accounting guidance. The amount of asset retirement obligations relates primarily to estimated asbestos removal costs at the end of the economic life of properties that were built before 1984. As of September 30, 2012 and December 31, 2011, the amount included in accounts payable and other accrued liabilities on our condensed consolidated balance sheets was approximately $1.7 million and $1.2 million, respectively.

(g) Construction Management Revenue

Construction management revenue for long-term contracts are recognized under the percentage-of-completion method of accounting. Revenues are determined by measuring the percentage of total costs incurred to date to estimated total costs for each construction management contract based on current estimates of costs to complete. Contract costs include all labor and benefits, materials, subcontracts, and an allocation of indirect costs related to contract performance. Indirect costs are allocated to projects based upon labor hours charged. Third party costs are included in construction management expense and their reimbursements are included in construction management revenue to the extent that the Company is the primary obligor for the third party costs.  Otherwise, construction management revenue and expense is reflected net of third party costs.  As long-term design-build projects extend over one or more years, revisions in cost and estimated earnings during the course of the work are reflected in the accounting period in which the facts which require the revision become known. At the time a loss on a design-build project becomes known, the entire amount of the estimated loss is recognized in the condensed consolidated financial statements. Change orders are recognized when they are approved by the client.

Costs and estimated earnings in excess of billings on uncompleted construction management projects are included in other assets in the condensed consolidated balance sheets. Billings in excess of costs and estimated earnings on uncompleted construction management projects are included in accounts payable and other accrued liabilities in the condensed consolidated balance sheets. Customers are billed on a monthly basis at the end of each month, which can be in advance of work performed.

(h) Assets and Liabilities Measured at Fair Value

Fair value under U.S. GAAP is a market-based measurement, not an entity-specific measurement. Therefore, our fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair-value measurements, we use a fair-value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair-value measurement is based on inputs from different levels of the fair-value hierarchy, the level in the fair-value hierarchy within which the entire fair-value measurement falls is based on the lowest level input that is significant to the fair-value measurement in its entirety. Our assessment of the significance of a particular input to the fair-value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.

(i) Transactions Expense

Transactions expense includes acquisition-related expenses and other business development expenses, which are expensed as incurred. Acquisition-related expenses include closing costs, broker commissions and other professional fees, including legal and accounting fees related to acquisitions and potential acquisitions.

(j) Capitalization of Costs

Direct and indirect project costs that are clearly associated with the development and redevelopment of properties are capitalized as incurred. Project costs include all costs directly associated with the development or redevelopment of a property, including construction costs, interest, property taxes, insurance, legal fees and costs of personnel working on the project. Indirect costs that do not clearly relate to the projects under development/redevelopment are not capitalized and are charged to expense as incurred.

Capitalization of costs begins when the activities necessary to get the development/redevelopment project ready for its intended use begins, which include costs incurred before the beginning of construction. Capitalization of costs ceases when the development/redevelopment project is substantially complete and ready for its intended use. Determining when a development/redevelopment project commences, and when it is substantially complete and ready for its intended use involves a degree of judgment. We generally consider a development/redevelopment project to be substantially complete and ready for its intended use upon commissioning, which is when the redeveloped/developed project has been tested at full load, or receipt of a certificate of occupancy. We cease cost capitalization if activities necessary for the development/redevelopment of the property have been suspended. Capitalized costs are allocated to the specific components of a project that are benefited.

During the three months ended September 30, 2012 and 2011, we capitalized interest of approximately $4.5 million and $4.8 million, respectively, and $13.6 million and $13.6 million during the nine months ended September 30, 2012 and 2011, respectively. During the three months ended September 30, 2012 and 2011, we capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $8.0 million and $6.5 million, respectively, and $23.3 million and $18.8 million during the nine months ended September 30, 2012 and 2011, respectively. Cash flows from capitalized leasing costs of $26.5 million and $19.1 million are included in improvements to and advances for investments in real estate in cash flows from investing activities in the condensed consolidated statements of cash flows for the nine months ended September 30, 2012 and 2011, respectively.

(k) Management’s Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates made. On an on-going basis, we evaluate our estimates, including those related to the valuation of our real estate properties, accounts receivable and deferred rent receivable, performance-based equity compensation plans, the completeness of accrued liabilities and Digital Realty Trust, Inc.’s qualification as a REIT. We base our estimates on historical experience, current market conditions, and various other assumptions that are believed to be reasonable under the circumstances. Actual results may vary from those estimates and those estimates could vary under different assumptions or conditions.

(l) Segment Information

All of our properties generate similar revenues and expenses related to tenant rent and reimbursements and operating expenses. The delivery of our products is consistent across all properties and although services are provided to a wide range of customers, the types of services provided to them are limited to a few core principles. As such, the properties in our portfolio have similar economic characteristics and the nature of the products and services provided to our customers and the method to distribute such services are consistent throughout the portfolio. Consequently, our properties qualify for aggregation into one reporting segment.

(m) Recent Accounting Pronouncements

In May 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2011-04, Fair Value Measurement (Topic 820). This ASU is intended to create consistency between U.S. GAAP and International Financial Reporting Standards on the definition of fair value and on the guidance on how to measure fair value and on what to disclose about fair value measurements. We adopted this accounting guidance for financial statements issued for fiscal periods beginning after December 15, 2011. This update did not have a material effect on our financial statements.

In June 2011, the FASB issued ASU No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income (“ASU 2011-05”). This update amends Accounting Standards Codification (“ASC”) Topic 220, Comprehensive Income, to provide that total comprehensive income will be reported in one continuous statement or two separate but consecutive statements of financial performance. Presentation of total comprehensive income in the statement of stockholders’ equity (or statement of capital) or the footnotes will no longer be allowed. The calculation of net income and basic and diluted net income per share (or per unit) was not affected. ASU 2011-05 is effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2011. This update did not have a material effect on our financial statements.

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Fair Value Of Instruments

9 Months Ended

Sep. 30, 2012

Fair Value Of Instruments

14. Fair Value of Instruments

We disclose fair value information about all financial instruments, whether or not recognized in the condensed consolidated balance sheets, for which it is practicable to estimate fair value.

Current accounting guidance requires the Company to disclose fair value information about all financial instruments, whether or not recognized in the balance sheets, for which it is practicable to estimate fair value. The Company’s disclosures of estimated fair value of financial instruments at September 30, 2012 and December 31, 2011 were determined using available market information and appropriate valuation methods. Considerable judgment is necessary to interpret market data and develop estimated fair value. The use of different market assumptions or estimation methods may have a material effect on the estimated fair value amounts.

The carrying amounts for cash and cash equivalents, restricted cash, accounts and other receivables, accounts payable and other accrued liabilities, security deposits and prepaid rents approximate fair value because of the short-term nature of these instruments. As described in note 13, the interest rate cap and interest rate swaps are recorded at fair value.

We calculate the fair value of our mortgage loans, unsecured senior notes and exchangeable senior debentures based on currently available market rates assuming the loans are outstanding through maturity and considering the collateral and other loan terms. In determining the current market rate for fixed rate debt, a market spread is added to the quoted yields on federal government treasury securities with similar maturity dates to debt. The carrying value of our global revolving credit facility approximates fair value, due to the short-term nature of this instrument along with the variability of interest rates.

As of September 30, 2012 and December 31, 2011, the aggregate estimated fair value and carrying value of our global revolving credit facility, unsecured senior notes, exchangeable senior debentures, mortgage loans and other secured loan were as follows (in thousands):

	As of September 30, 2012		As of December 31, 2011
	Estimated Fair Value	Carrying Value	Estimated Fair Value	Carrying Value
Global revolving credit facility (1)	$                  526,372	$          526,372	$                  275,106	$          275,106
Unsecured term loan (2)	754,935	754,935	-	-
Unsecured senior notes (3)(4)	1,923,854	1,737,881	1,502,271	1,441,072
Exchangeable senior debentures (3)	460,347	266,400	438,327	266,400
Mortgage loans (3)	850,356	794,485	1,007,615	947,132
Other secured loan (3)	-	-	10,688	10,500
	$               4,515,864	$       4,080,073	$               3,234,007	$       2,940,210

(1)	The carrying value of our global revolving credit facility approximates estimated fair value, due to the short-term nature of this instrument along with the variability of interest rates.
(2)	The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates.

(3) Valuations for our unsecured senior notes, mortgage loans and other secured loan are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes and exchangeable senior debentures are valued based on quoted market prices.

(4) The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes are net of discount of $12,119 and $8,928 in the aggregate as of September 30, 2012 and December 31, 2011, respectively.

Digital Realty Trust, L.P. [Member]

Fair Value Of Instruments

14. Fair Value of Instruments

We disclose fair value information about all financial instruments, whether or not recognized in the condensed consolidated balance sheets, for which it is practicable to estimate fair value.

Current accounting guidance requires the Company to disclose fair value information about all financial instruments, whether or not recognized in the balance sheets, for which it is practicable to estimate fair value. The Company’s disclosures of estimated fair value of financial instruments at September 30, 2012 and December 31, 2011 were determined using available market information and appropriate valuation methods. Considerable judgment is necessary to interpret market data and develop estimated fair value. The use of different market assumptions or estimation methods may have a material effect on the estimated fair value amounts.

The carrying amounts for cash and cash equivalents, restricted cash, accounts and other receivables, accounts payable and other accrued liabilities, security deposits and prepaid rents approximate fair value because of the short-term nature of these instruments. As described in note 13, the interest rate cap and interest rate swaps are recorded at fair value.

We calculate the fair value of our mortgage loans, unsecured senior notes and exchangeable senior debentures based on currently available market rates assuming the loans are outstanding through maturity and considering the collateral and other loan terms. In determining the current market rate for fixed rate debt, a market spread is added to the quoted yields on federal government treasury securities with similar maturity dates to debt. The carrying value of our global revolving credit facility approximates fair value, due to the short-term nature of this instrument along with the variability of interest rates.

As of September 30, 2012 and December 31, 2011, the aggregate estimated fair value and carrying value of our global revolving credit facility, unsecured senior notes, exchangeable senior debentures, mortgage loans and other secured loan were as follows (in thousands):

	As of September 30, 2012		As of December 31, 2011
	Estimated Fair Value	Carrying Value	Estimated Fair Value	Carrying Value
Global revolving credit facility (1)	$                  526,372	$          526,372	$                  275,106	$          275,106
Unsecured term loan (2)	754,935	754,935	-	-
Unsecured senior notes (3)(4)	1,923,854	1,737,881	1,502,271	1,441,072
Exchangeable senior debentures (3)	460,347	266,400	438,327	266,400
Mortgage loans (3)	850,356	794,485	1,007,615	947,132
Other secured loan (3)	-	-	10,688	10,500
	$               4,515,864	$       4,080,073	$               3,234,007	$       2,940,210

(1)	The carrying value of our global revolving credit facility approximates estimated fair value, due to the short-term nature of this instrument along with the variability of interest rates.
(2)	The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates.

(3) Valuations for our unsecured senior notes, mortgage loans and other secured loan are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes and exchangeable senior debentures are valued based on quoted market prices.

(4) The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes are net of discount of $12,119 and $8,928 in the aggregate as of September 30, 2012 and December 31, 2011, respectively.

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Equity And Accumulated Other Comprehensive Loss, Net

9 Months Ended

Sep. 30, 2012

Equity And Accumulated Other Comprehensive Loss, Net [Abstract]

Equity And Accumulated Other Comprehensive Loss, Net

10. Equity and Accumulated Other Comprehensive Loss, Net

(a) Common Stock

On July 2, 2012, Digital Realty Trust, Inc. completed an offering of 11.5 million shares of its common stock for total net proceeds, after deducting underwriting discounts and commissions and estimated offering expenses, of approximately $797.2 million. Digital Realty Trust, Inc. contributed the net proceeds from this offering to the Operating Partnership in exchange for 11.5 million common units, as required by the Operating Partnership’s partnership agreement, and the Operating Partnership used the net proceeds to fund a portion of the purchase price for the acquisition of the Sentrum Portfolio and to temporarily repay borrowings under our global revolving credit facility.

(b) Equity Distribution Agreements

On December 31, 2009, Digital Realty Trust, Inc. entered into equity distribution agreements, as amended, which we refer to as the 2009 Equity Distribution Agreements under which it could issue and sell shares of its common stock having an aggregate offering price of up to $400.0 million. The sales of common stock made under the 2009 Equity Distribution Agreements were made in “at the market” offerings as defined in Rule 415 of the Securities Act. In June 2011, we completed this equity distribution program. For the nine months ended September 30, 2011, Digital Realty Trust, Inc. generated aggregate net proceeds of approximately $176.9 million from the issuance of approximately 3.0 million common shares under the 2009 Equity Distribution Agreements at an average price of $60.51 per share after payment of approximately $2.7 million of commissions to the sales agents and before offering expenses. Pursuant to the program, we sold 6.8 million shares of common stock for gross proceeds of $400.0 million, resulting in net proceeds of approximately $394.0 million after deducting commissions.

On June 29, 2011, Digital Realty Trust, Inc. entered into new equity distribution agreements, which we refer to as the 2011 Equity Distribution Agreements, with each of Merrill Lynch, Pierce, Fenner & Smith Incorporated, Citigroup Global Markets Inc., Credit Suisse Securities (USA) LLC, Deutsche Bank Securities Inc. and Morgan Stanley & Co. LLC, or the Agents, under which it could issue and sell shares of its common stock having an aggregate offering price of up to $400.0 million from time to time through, at its discretion, any of the Agents as its sales agents. The sales of common stock made under the 2011 Equity Distribution Agreements will be made in “at the market” offerings as defined in Rule 415 of the Securities Act. For the nine months ended September 30, 2012, Digital Realty Trust, Inc. generated net proceeds of approximately $62.7 million from the issuance of approximately 1.0 million common shares under the 2011 Equity Distribution Agreements at an average price of $66.19 per share after payment of approximately $0.6 million of commissions to the sales agents and before offering expenses.  No sales were made under the 2011 Equity Distribution Agreements during the three months ended September 30, 2012.

(c) Redeemable Preferred Stock

On April 5, 2012 and April 18, 2012, Digital Realty Trust, Inc. issued an aggregate of 7,300,000 shares of its 6.625% series F cumulative redeemable preferred stock, or the series F preferred stock, for net proceeds of $176.2 million, after deducting underwriting discounts and commissions and offering expenses. Dividends are cumulative on the series F preferred stock from the date of original issuance in the amount of $1.65625 per share each year, which is equivalent to 6.625% of the $25.00 liquidation preference per share. Dividends on the series F preferred stock are payable quarterly in arrears. The first dividend paid on the series F preferred stock on June 29, 2012 was a pro rata dividend from and including the original issue date to and including June 30, 2012 in the amount of $0.395660 per share. The series F preferred stock does not have a stated maturity date and is not subject to any sinking fund or mandatory redemption provisions. Upon liquidation, dissolution or winding up, the series F preferred stock will rank senior to Digital Realty Trust, Inc. common stock with respect to the payment of distributions and other amounts and rank on parity with Digital Realty Trust, Inc.’s series D cumulative convertible preferred stock and series E cumulative redeemable preferred stock. Digital Realty Trust, Inc. is not allowed to redeem the series F preferred stock before April 5, 2017, except in limited circumstances to preserve its status as a REIT. On or after April 5, 2017, Digital Realty Trust, Inc. may, at its option, redeem the series F preferred stock, in whole or in part, at any time or from time to time, for cash at a redemption price of $25.00 per share, plus all accrued and unpaid dividends on such series F preferred stock up to but excluding the redemption date. Holders of the series F preferred stock generally have no voting rights except for limited voting rights if Digital Realty Trust, Inc. fails to pay dividends for six or more quarterly periods (whether or not consecutive) and in certain other circumstances. Upon the occurrence of specified changes of control, as a result of which neither Digital Realty Trust, Inc.’s common stock nor the common securities of the acquiring or surviving entity (or American Depositary Receipts representing such securities) is listed on the New York Stock Exchange, or NYSE, the NYSE Amex Equities or the NASDAQ Stock Market or listed or quoted on a successor exchange or quotation system, each holder of series F preferred stock will have the right (unless, prior to the change of control conversion date specified in the Articles Supplementary governing the series F preferred stock, Digital Realty Trust, Inc. has provided or provides notice of its election to redeem the series F preferred stock) to convert some or all of the series F preferred stock held by it into a number of shares of Digital Realty Trust, Inc.’s common stock per share of series F preferred stock to be converted equal to the lesser of:

• the quotient obtained by dividing (i) the sum of the $25.00 liquidation preference plus the amount of any accrued and unpaid dividends to, but not including, the change of control conversion date (unless the change of control conversion date is after a record date for a series F preferred stock dividend payment and prior to the corresponding series F preferred stock dividend payment date, in which case no additional amount for such accrued and unpaid dividend will be included in this sum) by (ii) the common stock price specified in the Articles Supplementary governing the series F preferred stock; and

• 0.6843, or the share cap, subject to certain adjustments;

subject, in each case, to provisions for the receipt of alternative consideration as described in the Articles Supplementary governing the series F preferred stock. Except in connection with specified change of control transactions, the series F preferred stock is not convertible into or exchangeable for any other property or securities of Digital Realty Trust, Inc.  

(d) Noncontrolling Interests in Operating Partnership

Noncontrolling interests in the Operating Partnership relate to the interests that are not owned by Digital Realty Trust, Inc. The following table shows the ownership interest in the Operating Partnership as of September 30, 2012 and December 31, 2011:

	September 30, 2012			December 31, 2011
	Number of units	Percentage of total		Number of units	Percentage of total
Digital Realty Trust, Inc.	123,261,390	96.4	%	106,039,279	95.6	%
Noncontrolling interests consist of:
Common units held by third parties	3,131,814	2.4		3,405,814	3.0
Incentive units held by employees and    directors (see note 12)	1,494,254	1.2		1,530,316	1.4
	127,887,458	100.0	%	110,975,409	100.0	%

Limited partners have the right to require the Operating Partnership to redeem part or all of their common units for cash based on the fair market value of an equivalent number of shares of Digital Realty Trust, Inc. common stock at the time of redemption. Alternatively, Digital Realty Trust, Inc. may elect to acquire those common units in exchange for shares of Digital Realty Trust, Inc. common stock on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, issuance of stock rights, specified extraordinary distributions and similar events. Pursuant to authoritative accounting guidance, Digital Realty Trust, Inc. evaluated whether it controls the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the share settlement of the noncontrolling Operating Partnership common and incentive units. Based on the results of this analysis, we concluded that the common and incentive Operating Partnership units met the criteria to be classified within equity.

The redemption value of the noncontrolling Operating Partnership common units and the vested incentive units was approximately $290.1 million and $291.5 million based on the closing market price of Digital Realty Trust, Inc. common stock on September 30, 2012 and December 31, 2011, respectively.

The following table shows activity for the noncontrolling interests in the Operating Partnership for the nine months ended September 30, 2012:

	Common Units	Incentive Units	Total
As of December 31, 2011	3,405,814	1,530,316	4,936,130
Redemption of common units for shares of  Digital Realty Trust, Inc. common stock (1)	(274,000)	-	(274,000)
Conversion of incentive units held by employees and directors    for shares of Digital Realty Trust, Inc. common stock (1)	-	(186,192)	(186,192)
Cancellation of incentive units held by employees and directors	-	(15,950)	(15,950)
Grant of incentive units to employees and directors	-	166,080	166,080
As of September 30, 2012	3,131,814	1,494,254	4,626,068

(1) This redemption was recorded as a reduction to noncontrolling interests in the Operating Partnership and an increase to common stock and additional paid in capital based on the book value per unit in the accompanying condensed consolidated balance sheet of Digital Realty Trust, Inc.

Under the terms of certain third parties’ (the eXchange parties) contribution agreements signed in the third quarter of 2004, we have agreed to indemnify each eXchange party against adverse tax consequences in the event the Operating Partnership directly or indirectly sells, exchanges or otherwise disposes of (whether by way of merger, sale of assets or otherwise) in a taxable transaction any interest in 200 Paul Avenue 1-4 or 1100 Space Park Drive until the earlier of November 3, 2013 and the date on which these contributors or certain transferees hold less than 25% of the Operating Partnership common units issued to them in the formation transactions consummated concurrently with the IPO. Under the eXchange parties’ amended contribution agreement, the Operating Partnership has agreed to make approximately $17.8 million of indebtedness available for guaranty by the eXchange parties until the earlier of November 3, 2013 and the date on which these contributors or certain transferees hold less than 25% of the Operating Partnership common units issued to them in the formation transactions consummated concurrently with the IPO, and we have agreed to indemnify each eXchange party against adverse tax consequences if the Operating Partnership does not provide such indebtedness to guarantee.

(e) Dividends

We have declared and paid the following dividends on our common and preferred stock for the nine months ended September 30, 2012 (in thousands):

Date dividend declared	Dividend payable date	Series C Preferred Stock (1)(6)	Series D Preferred Stock (2)	Series E Preferred Stock (3)	Series F Preferred Stock (4)		Common Stock (5)
February 14, 2012	Mar. 30, 2012	$             1,402	$            2,398	$           5,031	$                  -		$        78,335
April 23, 2012	June 29, 2012	-	2,394	5,031	2,888	(7)	80,478
July 19, 2012	Sept. 28, 2012	-	1,723	5,031	3,023		89,679
		$             1,402	$            6,515	$         15,093	$           5,911		$      248,492

(1) $1.094 annual rate of dividend per share.

(2) $1.375 annual rate of dividend per share.

(3) $1.750 annual rate of dividend per share.

(4) $1.656 annual rate of dividend per share.

(5) $2.920 annual rate of dividend per share.

(6) Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% series C cumulative convertible preferred stock, or the series C preferred stock, into shares of its of common stock in accordance with the terms of the series C preferred stock. Each share of series C preferred stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.

(7) Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

Distributions out of Digital Realty Trust, Inc.’s current or accumulated earnings and profits are generally classified as dividends whereas distributions in excess of its current and accumulated earnings and profits, to the extent of a stockholder’s U.S. federal income tax basis in Digital Realty Trust, Inc.’s stock, are generally classified as a return of capital. Distributions in excess of a stockholder’s U.S. federal income tax basis in Digital Realty Trust, Inc.’s stock are generally characterized as capital gain. Cash provided by operating activities has generally been sufficient to fund all distributions, however, we may also need to utilize borrowings under the global revolving credit facility to fund all distributions.

(f) Accumulated Other Comprehensive Loss, Net

The accumulated balances for each classification of other comprehensive loss, net as of September 30, 2012 are as follows (in thousands):

	Foreign currency translation adjustments	Cash flow hedge adjustments	Accumulated other comprehensive loss, net
Balance as of December 31, 2011	$               (49,298)	$                 (6,582)	$               (55,880)
Net current period change	35,053	(6,553)	28,500
Reclassification to interest expense from interest rate swaps	-	2,856	2,856
Balance as of September 30, 2012	$               (14,245)	$               (10,279)	$               (24,524)

(g) Noncontrolling Interests in Consolidated Joint Ventures

On May 4, 2012, we acquired all of the noncontrolling ownership interest in the entity that owns 2805 Lafayette Street from our joint venture partner for approximately $12.4 million (subject to adjustment in limited circumstances). Concurrent with the acquisition, we repaid the secured debt on the property. The acquisition and debt repayment were financed with borrowings under our global revolving credit facility. The amount paid in excess of the carrying value of the noncontrolling ownership interest resulted in a decrease to additional paid-in capital, as presented in the accompanying condensed consolidated statement of equity.

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Commitments And Contingencies (Details)			9 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2012 GBP (£)	Sep. 30, 2012 350 East Cermak Road [Member] USD ($)	Sep. 30, 2011 350 East Cermak Road [Member] USD ($)	Sep. 30, 2012 29 A International Business Park [Member] USD ($)	Sep. 30, 2012 29 A International Business Park [Member] SGD	Sep. 30, 2012 Convergence Business Park [Member] USD ($)
Commitments and Contingencies [Line Items]
Rental revenue sharing agreement, maximum per month			$ 135,000
Space held for redevelopment (in square feet)			192,000
Lease expiration, date			May 01, 2012
Payments made as part of revenue sharing agreement			700,000	1,200,000
Additional performance based consideration earned (maximum)						50,000,000
Additional performance based consideration earned (maximum), adjusted for exchange rate					40,700,000
Expiration of earnout contingency					November 2020	November 2020
Lease expiration period							April 2017
Sale price of building							24,000,000
Real estate price, per square acre							225,000
Expected fair value of contingent consideration	91,300,000	56,500,000
Commitments related to construction contracts	$ 187,300,000

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Debt Of The Operating Partnership (Digital Realty Trust, L.P. [Member])

9 Months Ended

Sep. 30, 2012

Digital Realty Trust, L.P. [Member]

Debt Of The Operating Partnership

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

6. Debt of the Operating Partnership

A summary of outstanding indebtedness of the Operating Partnership as of September 30, 2012 and December 31, 2011 is as follows (in thousands):

Indebtedness	Interest Rate at September 30, 2012		Maturity Date		Principal Outstanding September 30, 2012		Principal Outstanding December 31, 2011
Global revolving credit facility	Various	(1)	Nov. 3, 2015		$                  526,372	(2)	$                  275,106	(2)
Unsecured term loan	Various	(3)(9)	Apr. 16, 2017		$                  754,935	(4)	$                              -
Unsecured senior notes:
Prudential Shelf Facility:
Series B	9.320%		Nov. 5, 2013		33,000		33,000
Series C	9.680%		Jan. 6, 2016		25,000		25,000
Series D	4.570%		Jan. 20, 2015		50,000		50,000
Series E	5.730%		Jan. 20, 2017		50,000		50,000
Series F	4.500%		Feb. 3, 2015		17,000		17,000
Total Prudential Shelf Facility					175,000		175,000
Senior Notes:
4.50% notes due 2015	4.500%		Jul. 15, 2015		375,000		375,000
5.875% notes due 2020	5.875%		Feb. 1, 2020		500,000		500,000
5.25% notes due 2021	5.250%		Mar. 15, 2021		400,000		400,000
3.625% notes due 2022	3.625%		Oct. 1, 2022		300,000		-
Unamortized discounts					(12,119)		(8,928)
Total senior notes, net of discount					1,562,881		1,266,072
Total unsecured senior notes, net of discount					1,737,881		1,441,072
5.50% exchangeable senior debentures due 2029	5.50%		Apr. 15, 2029	(5)	266,400		266,400
Total exchangeable senior debentures					266,400		266,400

1

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

Indebtedness	Interest Rate at September 30, 2012		Maturity Date		Principal Outstanding September 30, 2012		Principal Outstanding December 31, 2011
Mortgage loans:
Secured Term Debt (6)(7)	5.65%		Nov. 11, 2014		136,726		138,828
200 Paul Avenue 1-4 (7)	5.74%		Oct. 8, 2015		73,114		74,458
Mundells Roundabout	3-month GBP LIBOR + 1.20%	(9)	Nov. 30, 2013		69,235	(10)	66,563	(10)
2045 & 2055 LaFayette Street (7)	5.93%		Feb. 6, 2017		64,864		65,551
34551 Ardenwood Boulevard 1-4 (7)	5.95%		Nov. 11, 2016		53,102		53,627
1100 Space Park Drive (7)	5.89%		Dec. 11, 2016		53,078		53,609
1350 Duane Avenue/3080 Raymond Street (7)	5.42%		Oct. 1, 2012	(13)	-		52,800
600 West Seventh Street	5.80%		Mar. 15, 2016		51,566		52,709
150 South First Street (7)	6.30%		Feb. 6, 2017		51,008		51,508
360 Spear Street (7)	6.32%		Nov. 8, 2013		46,862		47,569
114 Rue Ambroise Croizat	3-month EURIBOR + 1.35%		Jan. 18, 2012	(13)	-		39,483	(11)
2334 Lundy Place (7)	5.96%		Nov. 11, 2016		38,621		39,003
Clonshaugh Industrial Estate II (8)	3-month EURIBOR + 4.50%	(9)	Sep. 4, 2014		38,580	(11)	38,883	(11)
1500 Space Park Drive (7)	6.15%		Oct. 5, 2013		36,247		37,875
Unit 9, Blanchardstown Corporate Park	3-month EURIBOR + 1.35%		Jan. 18, 2012	(13)	-		33,946	(11)
Cressex 1 (12)	5.68%		Oct. 16, 2014		28,529	(10)	27,786	(10)
1201 Comstock Street (7)	1-month LIBOR + 3.50%		Jun. 24, 2012	(13)	-		16,163
Paul van Vlissingenstraat 16	3-month EURIBOR + 1.60%	(9)	Jul. 18, 2013		13,053	(11)	13,319	(11)
2805 Lafayette Street (7)(14)	1-month LIBOR + 4.75%		Jun. 9, 2013	(13)	-		10,000
Chemin de l'Epinglier 2	3-month EURIBOR + 1.50%	(9)	Jul. 18, 2013		9,444	(11)	9,636	(11)
Gyroscoopweg 2E-2F	3-month EURIBOR + 1.50%	(9)	Oct. 18, 2013		8,312	(11)	8,480	(11)
Manchester Technopark (12)	5.68%		Oct. 16, 2014		8,679	(10)	8,453	(10)
8025 North Interstate 35	4.09%		Mar. 6, 2017		6,621		-
731 East Trade Street	8.22%		Jul. 1, 2020		4,586		4,806
Unamortized net premiums					2,258		2,077
Total mortgage loans, net of premiums					794,485		947,132
Other secured loan:
2805 Lafayette Street Mezzanine (7)(14)	1-month LIBOR + 8.50%		Jun. 9, 2013	(13)	-		10,500
Total other secured loan					-		10,500
Total indebtedness					$                4,080,073		$               2,940,210

(1) The interest rate for borrowings under the global revolving credit facility equals the applicable index plus a margin of 125 basis points which is based on the credit rating of our long-term debt. An annual facility fee of 25 basis points, which is based on the credit rating of our long-term debt, is due and payable quarterly on the unused portion of the facility.

2) Balances as of September 30, 2012 and December 31, 2011 are as follows (balances, in thousands):

Denomination of Draw	Balance as of September 30, 2012		Weighted-average interest rate	Balance as of December 31, 2011		Weighted-average interest rate
US ($)	$                    -		0.00%	$                194,000		1.54%
British Sterling (£)	447,018	(a)	1.79%	49,892	(b)	1.99%
Singapore Dollar (SGD)	21,183	(a)	1.56%	28,151	(b)	1.56%
Australian Dollar (AUD)	39,021	(a)	4.83%	3,063	(b)	5.89%
Hong Kong Dollar (HKD)	19,150	(a)	1.55%	-		-
Total	$         526,372		1.99%	$                275,106		1.67%

(a)	Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.
(b)	Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

(3) Interest rates are based on our senior unsecured debt ratings and are currently 145 basis points over the applicable index for floating rate advances.

(4) Balances as of September 30, 2012 are as follows (balances, in thousands):

Denomination of Draw	Balance asof September 30,2012			Weighted-average interest rate
U.S. Dollar ($)	$	410,905			1.67	%
Singapore Dollar (SGD)		154,391	(a)		1.81	%
British Pound Sterling (£)		90,697	(a)		1.97	%
Euro (€)		63,657	(a)		1.57	%
Australian Dollar (AUD)		35,285	(a)		5.03	%
	$	754,935			1.89	%

(a) Based on exchange rates of $0.81 to 1.00 SGD, $1.62 to £1.00, $1.29 to €1.00 and $1.04 to 1.00 AUD, respectively, as of September 30, 2012.

(5) The holders of the debentures have the right to require the Operating Partnership to repurchase the debentures in cash in whole or in part for a price of 100% of the principal amount plus accrued and unpaid interest on each of April 15, 2014, April 15, 2019 and April 15, 2024. We have the right to redeem the debentures in cash for a price of 100% of the principal amount plus accrued and unpaid interest commencing on April 18, 2014.

(6) This amount represents six mortgage loans secured by our interests in 36 NE 2nd Street, 3300 East Birch Street, 100 & 200 Quannapowitt Parkway, 300 Boulevard East, 4849 Alpha Road, and 11830 Webb Chapel Road. Each of these loans is cross-collateralized by the six properties.

(7) The respective borrower’s assets and credit are not available to satisfy the debts and other obligations of affiliates or any other person.

(8) The Operating Partnership or its subsidiary provides a limited recourse guarantee with respect to this loan.

(9) We have entered into interest rate swap agreements as a cash flow hedge for interest generated by these US LIBOR, EURIBOR and GBP LIBOR based loans as well as the U.S. Dollar and Singapore Dollartranches of the unsecured term loan. See note 13 for further information.

(10) Based on exchange rate of $1.62 to £1.00 as of September 30, 2012 and $1.55 to £1.00 as of December 31, 2011.

(11) Based on exchange rate of $1.29 to €1.00 as of September 30, 2012 and $1.30 to €1.00 as of December 31, 2011.

(12) These loans are also secured by a £7.8 million letter of credit. These loans are cross-collateralized by the two properties.

(13)

These loans were repaid in full: 114 Rue Ambroise Croizat (January 2012), Unit 9, Blanchardstown Corporate Park (January 2012), 1201 Comstock Street (April 2012), 2805 Lafayette Street  (May 2012),2805 Lafayette Street Mezzanine (May 2012) and 1350 Duane Avenue/3080 Raymond Street (September 2012). Net loss from early extinguishment of debt related to write-off of unamortized deferred loan costs on 1201 Comstock Street, 2805 Lafayette Street and 2805 Lafayette Street Mezzanine amounted to $0.3 million for both the three and nine months ended September 30, 2012.

(14)

Property formerly referred to as 800 Central Expressway.

Global Revolving Credit Facility

On November 3, 2011, the Operating Partnership replaced its corporate and Asia Pacific revolving credit facilities with an expanded revolving credit facility, which we refer to as the global revolving credit facility, increasing its total capacity to $1.5 billion from $850 million. The global revolving credit facility has an accordion feature that would enable us to increase the borrowing capacity of the credit facility to $2.25 billion, subject to the receipt of lender commitments. On August 10, 2012, we increased the aggregate commitments under our global revolving credit facility from $1.5 billion to $1.8 billion, pursuant to the partial exercise of the accordion feature.  The renewed facility matures in November 2015, with a one-year extension option. The interest rate for borrowings under the expanded facility equals the applicable index plus a margin which is based on the credit rating of our long-term debt and is currently 125 basis points. An annual facility fee on the unused portion of the facility, based on the credit rating of our long-term debt and currently 25 basis points, is payable quarterly. Funds may be drawn in U.S., Canadian, Singapore, Australian and Hong Kong dollars, as well as Euro, Pound Sterling, Swiss Franc and Japanese yen denominations. As of September 30, 2012, borrowings under the global revolving credit facility bore interest at a blended rate of  1.79% (GBP), 1.56% (Singapore Dollars), 4.83% (Australian Dollars) and 1.55% (Hong Kong Dollars), which are based on 1-month GBP LIBOR,  1-month SIBOR,  1-month BBR and 1-month HIBOR, respectively, plus a margin of 1.25%. We have used and intend to use available borrowings under the global revolving credit facility to acquire additional properties, fund development and redevelopment opportunities and to provide for working capital and other corporate purposes, including potentially for the repurchase, redemption or retirement of outstanding debt or preferred equity securities. We capitalized approximately $11.2 million of financing costs related to the global revolving credit facility. As of September 30, 2012, approximately $526.4 million was drawn under this facility and $22.4 million of letters of credit were issued.

The global revolving credit facility contains various restrictive covenants, including limitations on our ability to incur additional indebtedness, make certain investments or merge with another company, and requirements to maintain financial coverage ratios, including with respect to unencumbered assets. In addition, the global revolving credit facility restricts Digital Realty Trust, Inc. from making distributions to its stockholders, or redeeming or otherwise repurchasing shares of its capital stock, after the occurrence and during the continuance of an event of default, except in limited circumstances including as necessary to enable Digital Realty Trust, Inc. to maintain its qualification as a REIT and to minimize the payment of income or excise tax. As of September 30, 2012, we were in compliance with all of such covenants.  

2

DIGITAL REALTY TRUST, INC. AND SUBSIDIARIES

DIGITAL REALTY TRUST, L.P. AND SUBSIDIARIES

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS (continued)

September 30, 2012 and 2011

(unaudited)

Unsecured Term Loan

On April 17, 2012, we closed a new $750.0 million senior unsecured multi-currency term loan facility. The new facility matures on April 16, 2017. Interest rates are based on our senior unsecured debt ratings and are currently 145 basis points over the applicable index for floating rate advances. Funds may be drawn in U.S, Singapore and Australian dollars, as well as Euro and Pound Sterling denominations with the option to add Hong Kong dollars and Yen upon an accordion exercise, subject to the receipt of lender commitments. We had the ability to delay draw up to $250.0 million for up to 90 days from the date of closing. As of June 30, 2012, we had drawn approximately $525 million of the available facility based on exchange rates in effect at the time of each draw.  An additional $225 million was drawn against the facility during July 2012 based on exchange rates in effect at the time of the draws.   Based on exchange rates in effect at September 30, 2012, the balance outstanding is approximately $754.9 million. We have used borrowings under the term loan for acquisitions, repayment of indebtedness, development and redevelopment, working capital and general corporate purposes. The covenants under this loan are consistent with our global revolving credit facility. We capitalized approximately $5.3 million of financing costs related to the unsecured term loan.

3.625% Notes due 2022

On September 24, 2012, the Operating Partnership issued $300.0 million in aggregate principal amount of notes, maturing on October 1, 2022 with an interest rate of 3.625% per annum (the 2022 Notes). The purchase price paid by the initial purchasers was 98.684% of the principal amount. The 2022 Notes are general unsecured senior obligations of the Operating Partnership, rank equally in right of payment with all other senior unsecured indebtedness of the Operating Partnership and are fully and unconditionally guaranteed by Digital Realty Trust, Inc. Interest on the 2022 Notes is payable on April 1 and October 1 of each year, beginning on April 1, 2013. The net proceeds from the offering after deducting the original issue discount of approximately $3.9 million and underwriting commissions and expenses of approximately $3.0 million was approximately $293.1 million. We used the net proceeds from this offering to temporarily repay borrowings under our global revolving credit facility. The 2022 Notes have been reflected net of discount in the condensed consolidated balance sheet.  The indenture governing the 2022 Notes contains certain covenants, including (1) a leverage ratio not to exceed 60%, (2) a secured debt leverage ratio not to exceed 40% and (3) an interest coverage ratio of greater than 1.50, and also requires us to maintain total unencumbered assets of not less than 150% of the aggregate principal amount of unsecured debt. At September 30, 2012, we were in compliance with each of these financial covenants.

The table below summarizes our debt maturities and principal payments as of September 30, 2012 (in thousands):

	Global Revolving Credit Facility (1)	Unsecured Term Loan	Unsecured Senior Notes	Senior Notes	Exchangeable Senior Debentures (3)	Mortgage Loans (2)	Total Debt
Remainder of 2012	$                      -	$             -	$                -	$                -	$                    -	$        3,765	$           3,765
2013	-	-	33,000	-	-	193,837	226,837
2014	-	-	-	-	266,400	216,388	482,788
2015	526,372	-	67,000	375,000	-	75,493	1,043,865
2016	-	-	25,000	-	-	191,979	216,979
Thereafter	-	754,935	50,000	1,200,000	-	110,765	2,115,700
Subtotal	$          526,372	$ 754,935	$    175,000	$ 1,575,000	$        266,400	$    792,227	$    4,089,934
Unamortized discount	-	-	-	(12,119)	-	-	(12,119)
Unamortized premium	-	-	-	-	-	2,258	2,258
Total	$          526,372	$ 754,935	$    175,000	$ 1,562,881	$        266,400	$    794,485	$    4,080,073

(1) Subject to a one-year extension option exercisable by us. The bank group is obligated to grant the extension option provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility.

(2) Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of September 30, 2012, we provided limited recourse guarantees with respect to approximately $38.6 million of the outstanding mortgage indebtedness, and partial letter of credit support with respect to approximately an additional $37.2 million of the outstanding mortgage indebtedness (based on exchange rates as of September 30, 2012).

(3) Assumes maturity of the 2029 Debentures at their first redemption date in April 2014.

3

XML

Income Per Share (Summary Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Income Per Share [Abstract]
Net income available to common stockholders	$ 45,615	$ 31,908	$ 126,847	$ 94,878
Weighted average shares outstanding-basic	122,026,421	100,588,235	112,995,512	96,137,611
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)		49,163		38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock/units		914,480		308,176
Excess exchange value of the 2026 Debentures				494,292
Weighted average shares/units outstanding-diluted	122,353,511	101,912,342	113,275,221	97,316,650
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97

XML

Acquired Intangible Assets And Liabilities

9 Months Ended

Sep. 30, 2012

Acquired Intangible Assets And Liabilities

4. Acquired Intangible Assets and Liabilities

The following summarizes our acquired intangible assets (acquired in place lease value and acquired above-market lease value) and intangible liabilities (acquired below-market lease value) as of September 30, 2012 and December 31, 2011.

	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)
Net	$	357,372		$	232,910
Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)
Net	$	68,269		$	29,701
Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)
Net	$	152,876		$	85,819

Amortization of acquired below-market lease value, net of acquired above-market lease value, resulted in an increase to rental revenues of $2.3 million and $2.0 million for the three months ended September 30, 2012 and 2011, respectively, and $7.4 million and $5.7 million for the nine months ended September 30, 2012 and 2011, respectively. The expected average remaining lives for acquired below market leases and acquired above market leases is 7.5 years and 5.8 years, respectively, as of September 30, 2012. Estimated annual amortization of acquired below-market lease value, net of acquired above-market lease value, for each of the five succeeding years, commencing January 1, 2013 is as follows:

(Amounts in thousands)
2013	$	11,091
2014		9,161
2015		8,044
2016		7,137
2017		5,613

Costs associated with extending or renewing acquired leases are capitalized and classified as deferred leasing costs. Amortization of acquired in place lease value (a component of depreciation and amortization expense) was $14.5 million and $13.5 million for the three months ended September 30, 2012 and 2011, respectively, and $38.9 million and $41.3 million for the nine months ended September 30, 2012 and 2011, respectively. The expected average amortization period for acquired in place lease value is 7.4 years as of September 30, 2012. The weighted average remaining contractual life for acquired leases excluding renewals or extensions is 5.9 years as of September 30, 2012. Estimated annual amortization of acquired in place lease value for each of the five succeeding years, commencing January 1, 2013 is as follows:

(Amounts in thousands)
2013	$	57,995
2014		52,791
2015		44,109
2016		41,653
2017		26,947

Digital Realty Trust, L.P. [Member]

Acquired Intangible Assets And Liabilities

4. Acquired Intangible Assets and Liabilities

The following summarizes our acquired intangible assets (acquired in place lease value and acquired above-market lease value) and intangible liabilities (acquired below-market lease value) as of September 30, 2012 and December 31, 2011.

	Balance as of
(Amounts in thousands)	September 30, 2012			December 31, 2011
Acquired in place lease value:
Gross amount	$	708,968		$	545,409
Accumulated amortization		(351,596	)		(312,499	)
Net	$	357,372		$	232,910
Acquired above-market lease value:
Gross amount	$	134,079		$	87,800
Accumulated amortization		(65,810	)		(58,099	)
Net	$	68,269		$	29,701
Acquired below-market lease value:
Gross amount	$	283,543		$	201,275
Accumulated amortization		(130,667	)		(115,456	)
Net	$	152,876		$	85,819

Amortization of acquired below-market lease value, net of acquired above-market lease value, resulted in an increase to rental revenues of $2.3 million and $2.0 million for the three months ended September 30, 2012 and 2011, respectively, and $7.4 million and $5.7 million for the nine months ended September 30, 2012 and 2011, respectively. The expected average remaining lives for acquired below market leases and acquired above market leases is 7.5 years and 5.8 years, respectively, as of September 30, 2012. Estimated annual amortization of acquired below-market lease value, net of acquired above-market lease value, for each of the five succeeding years, commencing January 1, 2013 is as follows:

(Amounts in thousands)
2013	$	11,091
2014		9,161
2015		8,044
2016		7,137
2017		5,613

Costs associated with extending or renewing acquired leases are capitalized and classified as deferred leasing costs. Amortization of acquired in place lease value (a component of depreciation and amortization expense) was $14.5 million and $13.5 million for the three months ended September 30, 2012 and 2011, respectively, and $38.9 million and $41.3 million for the nine months ended September 30, 2012 and 2011, respectively. The expected average amortization period for acquired in place lease value is 7.4 years as of September 30, 2012. The weighted average remaining contractual life for acquired leases excluding renewals or extensions is 5.9 years as of September 30, 2012. Estimated annual amortization of acquired in place lease value for each of the five succeeding years, commencing January 1, 2013 is as follows:

(Amounts in thousands)
2013	$	57,995
2014		52,791
2015		44,109
2016		41,653
2017		26,947

XML

Debt Of The Company

9 Months Ended

Sep. 30, 2012

Debt Of The Company [Abstract]

Debt Of The Company

5. Debt of the Company

In this Note 5, the “Company” refers only to Digital Realty Trust, Inc. and not to any of its subsidiaries.

The Company itself does not have any indebtedness. All debt is held directly or indirectly by the Operating Partnership.

Guarantee of Debt

The Company guarantees the Operating Partnership’s obligations with respect to its 5.50% exchangeable senior debentures due 2029 (2029 Debentures), 4.50% notes due 2015 (2015 Notes), 5.875% notes due 2020 (2020 Notes), 5.25% notes due 2021 (2021 Notes), 3.625% notes due 2022 (2022 Notes) and its unsecured senior notes sold to Prudential Investment Management, Inc. and certain of its affiliates pursuant to the Amended and Restated Note Purchase and Private Shelf Agreement, which we refer to as the Prudential shelf facility. The Company is also the guarantor of the Operating Partnership’s and its subsidiary borrowers’ obligations under its global revolving credit facility and unsecured term loan.

XML

Income Per Share

9 Months Ended

Sep. 30, 2012

Income Per Share [Abstract]

Income Per Share

7. Income per Share

The following is a summary of basic and diluted income per share (in thousands, except share and per share amounts):

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Net income available to common stockholders	$            45,615	$            31,908	$          126,847	$            94,878
Weighted average shares outstanding—basic	122,026,421	100,588,235	112,995,512	96,137,611
Potentially dilutive common shares:
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)	-	49,163	-	38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock	-	914,480	-	308,176
Excess exchange value of the 2026 Debentures	-	-	-	494,292
Weighted average shares outstanding—diluted	122,353,511	101,912,342	113,275,221	97,316,650
Income per share:
Basic	$                0.37	$                0.32	$                1.12	$                0.99
Diluted	$                0.37	$                0.31	$                1.12	$                0.97

During the year ended December 31, 2011, the Operating Partnership’s remaining 4.125% exchangeable senior debentures due August 15, 2026 (2026 Debentures) were redeemed and exchanged. On or after July 15, 2026, the 2026 Debentures would have been exchangeable at the then-applicable exchange rate for cash (up to the principal amount of the 2026 Debentures) and, with respect to any excess exchange value, into cash, shares of Digital Realty Trust, Inc. common stock or a combination of cash and shares of Digital Realty Trust, Inc. common stock. The 2026 Debentures also would have been exchangeable prior to July 15, 2026, but only upon the occurrence of certain specified events, including if the weighted average common stock price exceeded a specified strike price as of the end of a fiscal quarter. Using the treasury stock method, 494,292 shares of common stock contingently issuable upon settlement of the excess exchange value were included as potentially dilutive common shares in determining diluted earnings per share for the nine months ended September 30, 2011.  

We have excluded the following potentially dilutive securities in the calculations above as they would be antidilutive or not dilutive:

	Three Months Ended September 30,		Nine Months Ended September 30,
	2012	2011	2012	2011
Weighted average of Operating Partnership common    units not owned by Digital Realty Trust, Inc.	4,345,574	4,481,045	4,346,586	4,708,129
Potentially dilutive 2029 Debentures	6,514,812	6,368,292	6,471,282	6,309,599
Potentially dilutive Series C Cumulative Convertible    Preferred Stock	-	2,783,811	1,087,398	3,097,084
Potentially dilutive Series D Cumulative Convertible    Preferred Stock	4,219,384	5,603,998	4,309,978	6,775,337
Potentially dilutive Series E Cumulative Redeemable    Preferred Stock	4,151,146	-	4,045,501	-
Potentially dilutive Series F Cumulative Redeemable    Preferred Stock	2,632,647	-	1,243,998	-
	21,863,563	19,237,146	21,504,743	20,890,149

XML

Income Per Unit (Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	21,863,563	19,237,146	21,504,743	20,890,149
Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	17,517,989	14,756,101	17,158,157	16,182,020
Potentially Dilutive 2029 Debentures [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	6,514,812	6,368,292	6,471,282	6,309,599
Potentially Dilutive 2029 Debentures [Member] | Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	6,514,812	6,368,292	6,471,282	6,309,599
Potentially Dilutive Series C Cumulative Convertible Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities		2,783,811	1,087,398	3,097,084
Potentially Dilutive Series C Cumulative Convertible Preferred Stock/Units [Member] | Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities		2,783,811	1,087,398	3,097,084
Potentially Dilutive Series D Cumulative Convertible Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,219,384	5,603,998	4,309,978	6,775,337
Potentially Dilutive Series D Cumulative Convertible Preferred Stock/Units [Member] | Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,219,384	5,603,998	4,309,978	6,775,337
Potentially Dilutive Series E Cumulative Redeemable Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,151,146		4,045,501
Potentially Dilutive Series E Cumulative Redeemable Preferred Stock/Units [Member] | Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	4,151,146		4,045,501
Potentially Dilutive Series F Cumulative Redeemable Preferred Stock/Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	2,632,647		1,243,998
Potentially Dilutive Series F Cumulative Redeemable Preferred Stock/Units [Member] | Digital Realty Trust, L.P. [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Potentially dilutive securities	2,632,647		1,243,998

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Subsequent Events (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2012	Dec. 31, 2012
Series D Cumulative Convertible Preferred Units [Member]
Subsequent Event [Line Items]
Dividend and distribution amount		$ 0.343750
Dividend and distribution payable date		Dec. 31, 2012
Dividend payable to shareholders of record on		Dec. 14, 2012
Annual equivalent rate of dividend and distribution	$ 1.375	$ 1.375
Series E Cumulative Convertible Preferred Units [Member]
Subsequent Event [Line Items]
Dividend and distribution amount		$ 0.437500
Dividend and distribution payable date		Dec. 31, 2012
Dividend payable to shareholders of record on		Dec. 14, 2012
Annual equivalent rate of dividend and distribution	$ 1.750	$ 1.750
Series F Cumulative Convertible Preferred Units [Member]
Subsequent Event [Line Items]
Dividend and distribution amount		$ 0.414063
Dividend and distribution payable date		Dec. 31, 2012
Dividend payable to shareholders of record on		Dec. 14, 2012
Annual equivalent rate of dividend and distribution	$ 1.656	$ 1.65625
Common Stock [Member]
Subsequent Event [Line Items]
Dividend and distribution amount		$ 0.730000
Dividend and distribution payable date		Jan. 15, 2013
Dividend payable to shareholders of record on		Dec. 14, 2012
Annual equivalent rate of dividend and distribution		$ 2.920

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Equity And Accumulated Other Comprehensive Loss, Net (Narrative) (Details) (USD $)	0 Months Ended	9 Months Ended			9 Months Ended	12 Months Ended		9 Months Ended			18 Months Ended		9 Months Ended		9 Months Ended
	Jul. 02, 2012	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Sep. 30, 2012 Series F Cumulative Convertible Preferred Units [Member]	Dec. 31, 2012 Series F Cumulative Convertible Preferred Units [Member]	Dec. 31, 2011 Series F Cumulative Convertible Preferred Units [Member]	Sep. 30, 2012 April 5, 2012 [Member] Series F Cumulative Convertible Preferred Units [Member]	Sep. 30, 2012 April 18, 2012 [Member] Series F Cumulative Convertible Preferred Units [Member]	Sep. 30, 2011 2009 Equity Distribution Agreements [Member]	Jun. 30, 2011 2009 Equity Distribution Agreements [Member]	Dec. 31, 2009 2009 Equity Distribution Agreements [Member]	Sep. 30, 2012 2011 Equity Distribution Agreements [Member]	Jun. 29, 2011 2011 Equity Distribution Agreements [Member]	Sep. 30, 2012 Noncontrolling Interests In Consolidated Joint Ventures [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Net proceeds from issuance of common stock (shares)	11,500,000										6,800,000
Net proceeds from sale of common stock	$ 797,200,000									$ 176,900,000	$ 394,000,000		$ 62,700,000
Conversion of limited partner common units to general partner common units (units)	11,500,000
Aggregate offering price of the distribution agreement maximum												400,000,000		400,000,000
Aggregate shares issued from the distribution agreement										3,000,000
Equity distribution agreements at an average price										$ 60.51			$ 66.19
Payment of commissions to sales agents										2,700,000			600,000
Gross proceeds from the sale of common stock		894,221,000	419,619,000								400,000,000
Issuance of common shares													1,000,000
Issuance date								Apr. 05, 2012	Apr. 18, 2012
Preferred stock, issued					7,300,000		0	7,300,000	7,300,000
Preferred stock, dividend rate					6.625%		6.625%	6.625%	6.625%
Gross proceeds from issuance of redeemable preferred stock								176,200,000	176,200,000
Preferred stock dividend per share amount					$ 1.656	$ 1.65625		$ 1.65625	$ 1.656250
Preferred stock, liquidation preference per share/unit					$ 25.00		$ 25.00	$ 25.00	$ 25.00
Preferred stock, distribution payable date								Jun. 29, 2012	Jun. 29, 2012
Preferred stock, dividends in arrears								$ 0.395660	$ 0.395660
Preferred stock, redemption date								Apr. 05, 2017	Apr. 05, 2017
Preferred stock, redemption price per share								$ 25.00	$ 25.00
Shares issued upon conversion								0.6843	0.684300
Redemption value of OP units		290,100,000		291,500,000
Percentage of operating partnership common units issued		25.00%
Available indebtedness		17,800,000
Date of acquisition															May 04, 2012
Acquisition amount		$ 1,462,200,000													$ 12,400,000

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Income Per Unit (Summary Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income available to common unitholders	$ 45,615	$ 31,908	$ 126,847	$ 94,878
Weighted average units outstanding-basic	122,026,421	100,588,235	112,995,512	96,137,611
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)		49,163		38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock/units		914,480		308,176
Excess exchange value of the 2026 Debentures				494,292
Weighted average shares/units outstanding-diluted	122,353,511	101,912,342	113,275,221	97,316,650
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97
Digital Realty Trust, L.P. [Member]
Net income available to common unitholders	$ 47,189	$ 33,329	$ 131,668	$ 99,533
Weighted average units outstanding-basic	126,242,751	105,069,280	117,291,480	100,845,740
Stock options	76,774	197,632	74,462	192,885
Class C Units (2007 Grant)		49,163		38,654
Unvested incentive units	250,316	162,832	205,247	145,032
Series E preferred stock/units		914,480		308,176
Excess exchange value of the 2026 Debentures				494,292
Weighted average shares/units outstanding-diluted	126,569,841	106,393,387	117,571,189	102,024,779
Basic	$ 0.37	$ 0.32	$ 1.12	$ 0.99
Diluted	$ 0.37	$ 0.31	$ 1.12	$ 0.97

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Capital And Comprehensive Income (Tables)

9 Months Ended

Sep. 30, 2012

Schedule Of Distributions

Date dividend declared	Dividend payable date	Series C Preferred Stock (1)(6)	Series D Preferred Stock (2)	Series E Preferred Stock (3)	Series F Preferred Stock (4)		Common Stock (5)
February 14, 2012	Mar. 30, 2012	$             1,402	$            2,398	$           5,031	$                  -		$        78,335
April 23, 2012	June 29, 2012	-	2,394	5,031	2,888	(7)	80,478
July 19, 2012	Sept. 28, 2012	-	1,723	5,031	3,023		89,679
		$             1,402	$            6,515	$         15,093	$           5,911		$      248,492

(1) $1.094 annual rate of dividend per share.

(2) $1.375 annual rate of dividend per share.

(3) $1.750 annual rate of dividend per share.

(4) $1.656 annual rate of dividend per share.

(5) $2.920 annual rate of dividend per share.

(6) Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% series C cumulative convertible preferred stock, or the series C preferred stock, into shares of its of common stock in accordance with the terms of the series C preferred stock. Each share of series C preferred stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.

(7) Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

Digital Realty Trust, L.P. [Member]

Schedule Of Distributions

Date distribution declared	Distribution payable date	Series C Preferred Units (1)(6)	Series D Preferred Units (2)	Series E Preferred Units (3)	Series F Preferred Units (4)		Common Units (5)
February 14, 2012	Mar. 30, 2012	$             1,402	$            2,398	$           5,031	$                  -		$        81,917
April 23, 2012	June 29, 2012	-	2,394	5,031	2,888	(7)	83,982
July 19, 2012	Sept. 28, 2012	-	1,723	5,031	3,023		93,076
		$             1,402	$            6,515	$         15,093	$           5,911		$      258,975

(1) $1.094 annual rate of distribution per unit.

(2) $1.375 annual rate of distribution per unit.

(3) $1.750 annual rate of distribution per unit.

(4) $1.656 annual rate of distribution per unit.

(5) $2.920 annual rate of distribution per unit.

(6) Effective April 17, 2012, in connection with the conversion of the series C preferred stock by Digital Realty Trust, Inc., all of the outstanding 4.375% series C cumulative convertible preferred units, or the series C preferred units, were converted into common units in accordance with the terms of the series C preferred units. Each series C preferred unit was converted into 0.5480 common unit of the Operating Partnership.

(7) Represents a pro rata distribution from and including the original issue date to and including June 30, 2012.

Schedule Of Accumulated Other Comprehensive Loss

	Foreign currency translation adjustments	Cash flow hedge adjustments	Accumulated other comprehensive loss
Balance as of December 31, 2011	$               (52,704)	$                 (7,363)	$               (60,067)
Net current period change	36,286	(6,796)	29,490
Reclassification to interest expense from interest rate swaps	-	2,964	2,964
Balance as of September 30, 2012	$               (16,418)	$               (11,195)	$               (27,613)

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Debt Of The Operating Partnership (3.625% Notes Due 2022) (Narrative) (Details) (USD $)					9 Months Ended
	Sep. 30, 2012 Digital Realty Trust, L.P. [Member]	Dec. 31, 2011 Digital Realty Trust, L.P. [Member]	Sep. 30, 2012 3.625% Notes Due 2022 [Member]	Sep. 30, 2011 3.625% Notes Due 2022 [Member]	Sep. 30, 2012 3.625% Notes Due 2022 [Member] Digital Realty Trust, L.P. [Member]	Sep. 30, 2011 3.625% Notes Due 2022 [Member] Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Issuance date					Sep. 24, 2012
Senior face amount					$ 300,000,000
Maturity date					Oct. 01, 2022
Interest rate			3.625%	3.625%	3.625%	3.625%
Purchase price paid, percentage of face amount					98.684%
Unamortized discount	12,119,000	8,928,000			3,900,000
Debt issuance cost					3,000,000
Borrowings on unsecured senior notes					$ 293,100,000
Leverage ratio percentage					60.00%
Secured debt ratio percentage					40.00%
Interest coverage ratio					1.50
Unencumbered assets percentage to unsecured debt					150.00%

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Incentive Plan

9 Months Ended

Sep. 30, 2012

Incentive Plan

12. Incentive Plan

Our Amended and Restated 2004 Incentive Award Plan (as defined below) provides for the grant of incentive awards to employees, directors and consultants. Awards issuable under the Amended and Restated 2004 Incentive Award Plan include stock options, restricted stock, dividend equivalents, stock appreciation rights, long-term incentive units, cash performance bonuses and other incentive awards. Only employees are eligible to receive incentive stock options under the Amended and Restated 2004 Incentive Award Plan. Initially, we had reserved a total of 4,474,102 shares of common stock for issuance pursuant to the 2004 Incentive Award Plan, subject to certain adjustments set forth in the 2004 Incentive Award Plan. On May 2, 2007, Digital Realty Trust, Inc.’s stockholders approved the First Amended and Restated Digital Realty Trust, Inc., Digital Services, Inc. and Digital Realty Trust, L.P. 2004 Incentive Award Plan (as amended, the Amended and Restated 2004 Incentive Award Plan). The Amended and Restated 2004 Incentive Award Plan increases the aggregate number of shares of stock which may be issued or transferred under the plan by 5,000,000 shares to a total of 9,474,102 shares, and provides that the maximum number of shares of stock with respect to awards granted to any one participant during a calendar year will be 1,500,000 and the maximum amount that may be paid in cash during any calendar year with respect to any performance-based award not denominated in stock or otherwise for which the foregoing limitation would not be an effective limitation for purposes of Section 162(m) of the Code will be $10.0 million.

As of September 30, 2012, 3,495,677 shares of common stock or awards convertible into or exchangeable for common stock remained available for future issuance under the Amended and Restated 2004 Incentive Award Plan. Each long-term incentive unit and Class C Unit issued under the Amended and Restated 2004 Incentive Award Plan will count as one share of common stock for purposes of calculating the limit on shares that may be issued under the Amended and Restated 2004 Incentive Award Plan and the individual award limit discussed above.

(a) Long-Term Incentive Units

Long-term incentive units, which are also referred to as profits interest units, may be issued to eligible participants for the performance of services to or for the benefit of the Operating Partnership. Long-term incentive units, whether vested or not, will receive the same quarterly per unit distributions as Operating Partnership common units, which equal per share distributions on Digital Realty Trust, Inc. common stock. Initially, long-term incentive units do not have full parity with common units with respect to liquidating distributions. If such parity is reached, vested long-term incentive units may be converted into an equal number of common units of the Operating Partnership at any time, and thereafter enjoy all the rights of common units of the Operating Partnership, including redemption rights.

In order to achieve full parity with common units, long-term incentive units must be fully vested and the holder’s capital account balance in respect of such long-term incentive units must be equal to the capital account balance of a holder of an equivalent number of common units. The capital account balance attributable to each common unit is generally expected to be the same, in part because of the amount credited to a partner’s capital account upon the partner’s contribution of property to the Operating Partnership, and in part because the partnership agreement provides, in most cases, that allocations of income, gain, loss and deduction (which will adjust the partner’s capital accounts) are to be made to the common units on a proportionate basis. As a result, with respect to a number of long-term incentive units, it is possible to determine the capital account balance of an equivalent number of common units by multiplying the number of long-term incentive units by the capital account balance with respect to a common unit.

A partner’s initial capital account balance is equal to the amount the partner paid (or contributed to the Operating Partnership) for the partner’s units and is subject to subsequent adjustments, including with respect to the partner’s share of income, gain or loss of the Operating Partnership. Because a holder of long-term incentive units generally will not pay for the long-term incentive units, the initial capital account balance attributable to such long-term incentive units will be zero. However, the Operating Partnership is required to allocate income, gain, loss and deduction to the partner’s capital accounts in accordance with the terms of the partnership agreement, subject to applicable Treasury Regulations. The partnership agreement provides that holders of long-term incentive units will receive special allocations of gain in the event of a sale or “hypothetical sale” of assets of the Operating Partnership prior to the allocation of gain to Digital Realty Trust, Inc. or other limited partners with respect to their common units. The amount of such allocation will, to the extent of any such gain, be equal to the difference between the capital account balance of a holder of long-term incentive units attributable to such units and the capital account balance attributable to an equivalent number of common units. If and when such gain allocation is fully made, a holder of long-term incentive units will have achieved full parity with holders of common units. To the extent that, upon an actual sale or a “hypothetical sale” of the Operating Partnership’s assets as described above, there is not sufficient gain to allocate to a holder’s capital account with respect to long-term incentive units, or if such sale or “hypothetical sale” does not occur, such units will not achieve parity with common units.

The term “hypothetical sale” refers to circumstances that are not actual sales of the Operating Partnership’s assets but that require certain adjustments to the value of the Operating Partnership’s assets and the partners’ capital account balances. Specifically, the partnership agreement provides that, from time to time, in accordance with applicable Treasury Regulations, the Operating Partnership will adjust the value of its assets to equal their respective fair market values, and adjust the partners’ capital accounts, in accordance with the terms of the partnership agreement, as if the Operating Partnership sold its assets for an amount equal to their value. Times for making such adjustments generally include the liquidation of the Operating Partnership, the acquisition of an additional interest in the Operating Partnership by a new or existing partner in exchange for more than a de minimis capital contribution, the distribution by the Operating Partnership to a partner of more than a de minimis amount of partnership property as consideration for an interest in the Operating Partnership, in connection with the grant of an interest in the Operating Partnership (other than a de minimis interest) as consideration for the performance of services to or for the benefit of the Operating Partnership (including the grant of a long-term incentive unit), and at such other times as may be desirable or required to comply with the Treasury Regulations.

During the nine months ended September 30, 2012 and 2011, certain employees were granted an aggregate of 79,237 and 85,910 long-term incentive units, respectively. During the nine months ended September 30, 2012 and 2011, certain employees were also granted an aggregate of 86,843 and 98,632 long-term incentive units, respectively, which, in addition to a service condition, are subject to a performance condition that impacts the number of units which ultimately vests. The performance condition is based upon our achievement of the respective fiscal years’ Funds From Operations, or FFO, per share targets. Upon evaluating the results of the performance condition, the final number of units is determined and such units vest based on satisfaction of the service conditions. The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date, provided the grantee continues employment on each anniversary date. Based on our 2011 FFO per diluted share and unit, all of the 2011 long-term incentive units satisfied the performance condition. The grant date fair values, which equal the market price of Digital Realty Trust, Inc. common stock, are being expensed on a straight-line basis for service awards over the vesting period of the long-term incentive units, which ranges from three to five years. For performance based awards, we expense the fair value using an accelerated method with each vesting tranche valued as a separate award.  

The expense recorded for the three months ended September 30, 2012 and 2011 related to long-term incentive units was approximately $2.1 million and $2.2 million, respectively, and approximately $7.2 million and $6.6 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.4 million and $0.2 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.8 million and $0.6 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the long-term incentive units totaled $15.4 million and $12.7 million as of September 30, 2012 and December 31, 2011, respectively. We expect to recognize this unearned compensation over the next 2.7 years on a weighted average basis.

(b) Class C Profits Interest Units

On May 2, 2007, we granted awards of Class C Profits Interest Units of the Operating Partnership or similar stock-based performance awards, which we refer to collectively as the Class C Units, under the Amended and Restated 2004 Incentive Award Plan (2007 Grant) to each of our named executive officers and certain other officers and employees.

The Class C Units subject to this award were subject to vesting based on the achievement of a total stockholder return (which we refer to as the market condition) as measured on November 1, 2008 (which we refer to as the first measurement date) and May 1, 2010 (which we refer to as the second measurement date).

We previously determined that the market condition with respect to the first measurement date was not achieved. On May 1, 2010, we determined that 593,316 of the Class C Units and 20,169 shares of restricted stock subject to the 2007 Grant satisfied the market condition on the second measurement date (May 1, 2010), with the value of these units equal to the maximum amount of the award pool payable pursuant to the 2007 Grant on the second measurement date. Of the Class C Units that satisfied the market condition on May 1, 2010, 60% vested on May 1, 2010 and the remaining 40% will vest ratably each month thereafter for 24 months.

The fair value of the 2007 Grant was measured on the grant date using a Monte Carlo simulation to estimate the probability of the multiple market conditions being satisfied. The Monte Carlo simulation uses a statistical formula underlying the Black-Scholes and binomial formulas, and such simulation was run approximately 100,000 times. For each simulation, the value of the payoff was calculated at the settlement date and was then discounted to the grant date at a risk-free interest rate. The expected value of the Class C Units on the grant date was determined by multiplying the average of the values over all simulations by the number of outstanding shares of Digital Realty Trust, Inc. common stock and Operating Partnership units. The valuation was performed in a risk-neutral framework, so no assumption was made with respect to an equity risk premium. Other significant assumptions used in the valuation included an expected term of 36 months, expected stock price volatility of 23%, a risk-free interest rate of 4.6%, and a dividend growth rate of 5.0%. The fixed award limit under the plan was $17 million for the first market condition and $40 million for the second market condition, and there were 69.2 million shares of Digital Realty Trust, Inc. common stock and Operating Partnership units outstanding as of the 2007 grant date. The grant date fair value of these awards of approximately $11.8 million will be recognized as compensation expense on a straight-line basis over the expected service period of five years, which ended during the three months ended June 30, 2012. The unearned compensation as of September 30, 2012 and December 31, 2011 was $0 and $0.6 million, respectively. As of June 30, 2012, all of the Class C Units subject to the 2007 Grant had vested. We recognized compensation expense related to the Class C Units subject to the 2007 Grant of $0 and $0.7 million for the three months ended September 30, 2012 and 2011, respectively, and $0.5 million and $1.6 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0 and $0.1 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.1 million and $0.2 million for the nine months ended September 30, 2012 and 2011, respectively.

(c) Stock Options

The fair value of each option granted under the Amended and Restated 2004 Incentive Award Plan is estimated on the date of the grant using the Black-Scholes option-pricing model. For the nine months ended September 30, 2012 and 2011, no stock options were granted. The fair values are being expensed on a straight-line basis over the vesting period of the options, which ranges from four to five years. The expense recorded for the three months ended September 30, 2012 and 2011 was approximately $0 and $0.2 million, respectively, and approximately $0.2 million and $0.7 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0 and $0.1 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.1 million and $0.2 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the stock options totaled $0 and $0.3 million as of September 30, 2012 and December 31, 2011, respectively. All unearned compensation has been recognized as of September 30, 2012.

The following table summarizes the Amended and Restated 2004 Incentive Award Plan’s stock option activity for the nine months ended September 30, 2012:

	Period ended September 30,  2012
	Shares			Weighted average exercise price
Options outstanding, beginning of period		337,760		$	24.17
Exercised		(207,550	)		20.11
Cancelled / Forfeited		(301	)		41.73
Options outstanding, end of period		129,909		$	30.62
Exercisable, end of period		129,909		$	30.62

The following table summarizes information about stock options outstanding and exercisable as of September 30, 2012:

Options outstanding									Options exercisable
Exercise price	Number outstanding		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic  value		Number exercisable		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic  value
$12.00-13.02		34,870		2.08	$	12.00	$	2,017,230		34,870		2.08	$	12.00	$	2,017,230
$20.37-28.09		17,000		3.14		21.28		825,720		17,000		3.14		21.28		825,720
$33.18-41.73		78,039		4.54		40.97		2,253,392		78,039		4.54		40.97		2,253,392
		129,909		3.70	$	30.62	$	5,096,342		129,909		3.70	$	30.62	$	5,096,342

(d) Restricted Stock

During the nine months ended September 30, 2012 and 2011, certain employees were granted an aggregate of 45,184 and 41,220 shares of restricted stock, respectively. During the nine months ended September 30, 2012 and 2011, certain employees were also granted an aggregate of 52,947 and 50,999 shares of restricted stock, respectively, which, in addition to a service condition, are subject to a performance condition that impacts the number of shares which ultimately vests. The performance condition is based upon our achievement of the respective year’s FFO per share targets. Upon evaluating the results of the performance condition, the final number of shares is determined and such shares vest based on satisfaction of the service conditions. The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date provided the grantee continues employment on each anniversary date. Based on our 2011 FFO per diluted share and unit, all of the 2011 restricted stock satisfied the performance condition.

The grant date fair values, which equal the market price of Digital Realty Trust, Inc. common stock, are being expensed on a straight-line basis for service awards over the vesting period of the restricted stock, which ranges from three to four years. For performance based awards, we expense the fair value using an accelerated method with each vesting tranche valued as a separate award.

The expense recorded for the three months ended September 30, 2012 and 2011 related to grants of restricted stock was approximately $0.6 million and $0.5 million, respectively, and approximately $2.1 million and $1.5 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.6 million and $0.4 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $1.5 million and $1.1 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the restricted stock totaled $8.8 million and $5.5 million as of September 30, 2012 and December 31, 2011, respectively. We expect to recognize this unearned compensation over the next 2.9 years on a weighted average basis.

Digital Realty Trust, L.P. [Member]

Incentive Plan

12. Incentive Plan

Our Amended and Restated 2004 Incentive Award Plan (as defined below) provides for the grant of incentive awards to employees, directors and consultants. Awards issuable under the Amended and Restated 2004 Incentive Award Plan include stock options, restricted stock, dividend equivalents, stock appreciation rights, long-term incentive units, cash performance bonuses and other incentive awards. Only employees are eligible to receive incentive stock options under the Amended and Restated 2004 Incentive Award Plan. Initially, we had reserved a total of 4,474,102 shares of common stock for issuance pursuant to the 2004 Incentive Award Plan, subject to certain adjustments set forth in the 2004 Incentive Award Plan. On May 2, 2007, Digital Realty Trust, Inc.’s stockholders approved the First Amended and Restated Digital Realty Trust, Inc., Digital Services, Inc. and Digital Realty Trust, L.P. 2004 Incentive Award Plan (as amended, the Amended and Restated 2004 Incentive Award Plan). The Amended and Restated 2004 Incentive Award Plan increases the aggregate number of shares of stock which may be issued or transferred under the plan by 5,000,000 shares to a total of 9,474,102 shares, and provides that the maximum number of shares of stock with respect to awards granted to any one participant during a calendar year will be 1,500,000 and the maximum amount that may be paid in cash during any calendar year with respect to any performance-based award not denominated in stock or otherwise for which the foregoing limitation would not be an effective limitation for purposes of Section 162(m) of the Code will be $10.0 million.

As of September 30, 2012, 3,495,677 shares of common stock or awards convertible into or exchangeable for common stock remained available for future issuance under the Amended and Restated 2004 Incentive Award Plan. Each long-term incentive unit and Class C Unit issued under the Amended and Restated 2004 Incentive Award Plan will count as one share of common stock for purposes of calculating the limit on shares that may be issued under the Amended and Restated 2004 Incentive Award Plan and the individual award limit discussed above.

(a) Long-Term Incentive Units

Long-term incentive units, which are also referred to as profits interest units, may be issued to eligible participants for the performance of services to or for the benefit of the Operating Partnership. Long-term incentive units, whether vested or not, will receive the same quarterly per unit distributions as Operating Partnership common units, which equal per share distributions on Digital Realty Trust, Inc. common stock. Initially, long-term incentive units do not have full parity with common units with respect to liquidating distributions. If such parity is reached, vested long-term incentive units may be converted into an equal number of common units of the Operating Partnership at any time, and thereafter enjoy all the rights of common units of the Operating Partnership, including redemption rights.

In order to achieve full parity with common units, long-term incentive units must be fully vested and the holder’s capital account balance in respect of such long-term incentive units must be equal to the capital account balance of a holder of an equivalent number of common units. The capital account balance attributable to each common unit is generally expected to be the same, in part because of the amount credited to a partner’s capital account upon the partner’s contribution of property to the Operating Partnership, and in part because the partnership agreement provides, in most cases, that allocations of income, gain, loss and deduction (which will adjust the partner’s capital accounts) are to be made to the common units on a proportionate basis. As a result, with respect to a number of long-term incentive units, it is possible to determine the capital account balance of an equivalent number of common units by multiplying the number of long-term incentive units by the capital account balance with respect to a common unit.

A partner’s initial capital account balance is equal to the amount the partner paid (or contributed to the Operating Partnership) for the partner’s units and is subject to subsequent adjustments, including with respect to the partner’s share of income, gain or loss of the Operating Partnership. Because a holder of long-term incentive units generally will not pay for the long-term incentive units, the initial capital account balance attributable to such long-term incentive units will be zero. However, the Operating Partnership is required to allocate income, gain, loss and deduction to the partner’s capital accounts in accordance with the terms of the partnership agreement, subject to applicable Treasury Regulations. The partnership agreement provides that holders of long-term incentive units will receive special allocations of gain in the event of a sale or “hypothetical sale” of assets of the Operating Partnership prior to the allocation of gain to Digital Realty Trust, Inc. or other limited partners with respect to their common units. The amount of such allocation will, to the extent of any such gain, be equal to the difference between the capital account balance of a holder of long-term incentive units attributable to such units and the capital account balance attributable to an equivalent number of common units. If and when such gain allocation is fully made, a holder of long-term incentive units will have achieved full parity with holders of common units. To the extent that, upon an actual sale or a “hypothetical sale” of the Operating Partnership’s assets as described above, there is not sufficient gain to allocate to a holder’s capital account with respect to long-term incentive units, or if such sale or “hypothetical sale” does not occur, such units will not achieve parity with common units.

The term “hypothetical sale” refers to circumstances that are not actual sales of the Operating Partnership’s assets but that require certain adjustments to the value of the Operating Partnership’s assets and the partners’ capital account balances. Specifically, the partnership agreement provides that, from time to time, in accordance with applicable Treasury Regulations, the Operating Partnership will adjust the value of its assets to equal their respective fair market values, and adjust the partners’ capital accounts, in accordance with the terms of the partnership agreement, as if the Operating Partnership sold its assets for an amount equal to their value. Times for making such adjustments generally include the liquidation of the Operating Partnership, the acquisition of an additional interest in the Operating Partnership by a new or existing partner in exchange for more than a de minimis capital contribution, the distribution by the Operating Partnership to a partner of more than a de minimis amount of partnership property as consideration for an interest in the Operating Partnership, in connection with the grant of an interest in the Operating Partnership (other than a de minimis interest) as consideration for the performance of services to or for the benefit of the Operating Partnership (including the grant of a long-term incentive unit), and at such other times as may be desirable or required to comply with the Treasury Regulations.

During the nine months ended September 30, 2012 and 2011, certain employees were granted an aggregate of 79,237 and 85,910 long-term incentive units, respectively. During the nine months ended September 30, 2012 and 2011, certain employees were also granted an aggregate of 86,843 and 98,632 long-term incentive units, respectively, which, in addition to a service condition, are subject to a performance condition that impacts the number of units which ultimately vests. The performance condition is based upon our achievement of the respective fiscal years’ Funds From Operations, or FFO, per share targets. Upon evaluating the results of the performance condition, the final number of units is determined and such units vest based on satisfaction of the service conditions. The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date, provided the grantee continues employment on each anniversary date. Based on our 2011 FFO per diluted share and unit, all of the 2011 long-term incentive units satisfied the performance condition. The grant date fair values, which equal the market price of Digital Realty Trust, Inc. common stock, are being expensed on a straight-line basis for service awards over the vesting period of the long-term incentive units, which ranges from three to five years. For performance based awards, we expense the fair value using an accelerated method with each vesting tranche valued as a separate award.  

The expense recorded for the three months ended September 30, 2012 and 2011 related to long-term incentive units was approximately $2.1 million and $2.2 million, respectively, and approximately $7.2 million and $6.6 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.4 million and $0.2 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.8 million and $0.6 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the long-term incentive units totaled $15.4 million and $12.7 million as of September 30, 2012 and December 31, 2011, respectively. We expect to recognize this unearned compensation over the next 2.7 years on a weighted average basis.

(b) Class C Profits Interest Units

On May 2, 2007, we granted awards of Class C Profits Interest Units of the Operating Partnership or similar stock-based performance awards, which we refer to collectively as the Class C Units, under the Amended and Restated 2004 Incentive Award Plan (2007 Grant) to each of our named executive officers and certain other officers and employees.

The Class C Units subject to this award were subject to vesting based on the achievement of a total stockholder return (which we refer to as the market condition) as measured on November 1, 2008 (which we refer to as the first measurement date) and May 1, 2010 (which we refer to as the second measurement date).

We previously determined that the market condition with respect to the first measurement date was not achieved. On May 1, 2010, we determined that 593,316 of the Class C Units and 20,169 shares of restricted stock subject to the 2007 Grant satisfied the market condition on the second measurement date (May 1, 2010), with the value of these units equal to the maximum amount of the award pool payable pursuant to the 2007 Grant on the second measurement date. Of the Class C Units that satisfied the market condition on May 1, 2010, 60% vested on May 1, 2010 and the remaining 40% will vest ratably each month thereafter for 24 months.

The fair value of the 2007 Grant was measured on the grant date using a Monte Carlo simulation to estimate the probability of the multiple market conditions being satisfied. The Monte Carlo simulation uses a statistical formula underlying the Black-Scholes and binomial formulas, and such simulation was run approximately 100,000 times. For each simulation, the value of the payoff was calculated at the settlement date and was then discounted to the grant date at a risk-free interest rate. The expected value of the Class C Units on the grant date was determined by multiplying the average of the values over all simulations by the number of outstanding shares of Digital Realty Trust, Inc. common stock and Operating Partnership units. The valuation was performed in a risk-neutral framework, so no assumption was made with respect to an equity risk premium. Other significant assumptions used in the valuation included an expected term of 36 months, expected stock price volatility of 23%, a risk-free interest rate of 4.6%, and a dividend growth rate of 5.0%. The fixed award limit under the plan was $17 million for the first market condition and $40 million for the second market condition, and there were 69.2 million shares of Digital Realty Trust, Inc. common stock and Operating Partnership units outstanding as of the 2007 grant date. The grant date fair value of these awards of approximately $11.8 million will be recognized as compensation expense on a straight-line basis over the expected service period of five years, which ended during the three months ended June 30, 2012. The unearned compensation as of September 30, 2012 and December 31, 2011 was $0 and $0.6 million, respectively. As of June 30, 2012, all of the Class C Units subject to the 2007 Grant had vested. We recognized compensation expense related to the Class C Units subject to the 2007 Grant of $0 and $0.7 million for the three months ended September 30, 2012 and 2011, respectively, and $0.5 million and $1.6 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0 and $0.1 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.1 million and $0.2 million for the nine months ended September 30, 2012 and 2011, respectively.

(c) Stock Options

The fair value of each option granted under the Amended and Restated 2004 Incentive Award Plan is estimated on the date of the grant using the Black-Scholes option-pricing model. For the nine months ended September 30, 2012 and 2011, no stock options were granted. The fair values are being expensed on a straight-line basis over the vesting period of the options, which ranges from four to five years. The expense recorded for the three months ended September 30, 2012 and 2011 was approximately $0 and $0.2 million, respectively, and approximately $0.2 million and $0.7 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0 and $0.1 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $0.1 million and $0.2 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the stock options totaled $0 and $0.3 million as of September 30, 2012 and December 31, 2011, respectively. All unearned compensation has been recognized as of September 30, 2012.

The following table summarizes the Amended and Restated 2004 Incentive Award Plan’s stock option activity for the nine months ended September 30, 2012:

	Period ended September 30,  2012
	Shares			Weighted average exercise price
Options outstanding, beginning of period		337,760		$	24.17
Exercised		(207,550	)		20.11
Cancelled / Forfeited		(301	)		41.73
Options outstanding, end of period		129,909		$	30.62
Exercisable, end of period		129,909		$	30.62

The following table summarizes information about stock options outstanding and exercisable as of September 30, 2012:

Options outstanding									Options exercisable
Exercise price	Number outstanding		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic  value		Number exercisable		Weighted average remaining contractual life (years)		Weighted average exercise price		Aggregate intrinsic  value
$12.00-13.02		34,870		2.08	$	12.00	$	2,017,230		34,870		2.08	$	12.00	$	2,017,230
$20.37-28.09		17,000		3.14		21.28		825,720		17,000		3.14		21.28		825,720
$33.18-41.73		78,039		4.54		40.97		2,253,392		78,039		4.54		40.97		2,253,392
		129,909		3.70	$	30.62	$	5,096,342		129,909		3.70	$	30.62	$	5,096,342

(d) Restricted Stock

During the nine months ended September 30, 2012 and 2011, certain employees were granted an aggregate of 45,184 and 41,220 shares of restricted stock, respectively. During the nine months ended September 30, 2012 and 2011, certain employees were also granted an aggregate of 52,947 and 50,999 shares of restricted stock, respectively, which, in addition to a service condition, are subject to a performance condition that impacts the number of shares which ultimately vests. The performance condition is based upon our achievement of the respective year’s FFO per share targets. Upon evaluating the results of the performance condition, the final number of shares is determined and such shares vest based on satisfaction of the service conditions. The service conditions of the awards provide for 20% vesting on each of the first and second anniversaries of the grant date and 30% vesting on each of the third and fourth anniversaries of the grant date provided the grantee continues employment on each anniversary date. Based on our 2011 FFO per diluted share and unit, all of the 2011 restricted stock satisfied the performance condition.

The grant date fair values, which equal the market price of Digital Realty Trust, Inc. common stock, are being expensed on a straight-line basis for service awards over the vesting period of the restricted stock, which ranges from three to four years. For performance based awards, we expense the fair value using an accelerated method with each vesting tranche valued as a separate award.

The expense recorded for the three months ended September 30, 2012 and 2011 related to grants of restricted stock was approximately $0.6 million and $0.5 million, respectively, and approximately $2.1 million and $1.5 million for the nine months ended September 30, 2012 and 2011, respectively. We capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $0.6 million and $0.4 million for the three months ended September 30, 2012 and 2011, respectively, and approximately $1.5 million and $1.1 million for the nine months ended September 30, 2012 and 2011, respectively. Unearned compensation representing the unvested portion of the restricted stock totaled $8.8 million and $5.5 million as of September 30, 2012 and December 31, 2011, respectively. We expect to recognize this unearned compensation over the next 2.9 years on a weighted average basis.

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Subsequent Events

9 Months Ended

Sep. 30, 2012

Subsequent Events

17. Subsequent Events

On October 30, 2012, we declared the following dividends per share and the Operating Partnership declared an equivalent distribution per unit:

Share Class	Series D Preferred Stock	Series E Preferred Stock	Series F Preferred Stock	Common stock and common unit
Dividend and distribution amount	$ 0.343750	$ 0.437500	$ 0.414063	$ 0.730000
Dividend and distribution payable date	December 31, 2012	December 31, 2012	December 31, 2012	January 15, 2013
Dividend payable to shareholders of record on	December 14, 2012	December 14, 2012	December 14, 2012	December 14, 2012
Annual equivalent rate of dividend and distribution	$ 1.375	$ 1.750	$ 1.65625	$ 2.920

Digital Realty Trust, L.P. [Member]

Subsequent Events

17. Subsequent Events

On October 30, 2012, we declared the following dividends per share and the Operating Partnership declared an equivalent distribution per unit:

Share Class	Series D Preferred Stock	Series E Preferred Stock	Series F Preferred Stock	Common stock and common unit
Dividend and distribution amount	$ 0.343750	$ 0.437500	$ 0.414063	$ 0.730000
Dividend and distribution payable date	December 31, 2012	December 31, 2012	December 31, 2012	January 15, 2013
Dividend payable to shareholders of record on	December 14, 2012	December 14, 2012	December 14, 2012	December 14, 2012
Annual equivalent rate of dividend and distribution	$ 1.375	$ 1.750	$ 1.65625	$ 2.920

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Debt Of The Operating Partnership (Global Revolving Credit Facility) (Narrative) (Details) (Global Revolving Credit Facility [Member], Digital Realty Trust, L.P. [Member], USD $)	9 Months Ended
	Sep. 30, 2012		Aug. 10, 2012	Dec. 31, 2011		Nov. 03, 2011
Debt of the Operating Partnership [Line Items]
Revolving credit facility borrowing capacity	$ 1,800,000,000		$ 1,500,000,000			$ 850,000,000
Revolving credit facility maturity date	November 2015
Revolving credit facility commitments extension (years)	1 year
Revolving credit facility basis spread on variable rate	125
Basis rate for unused portion of the credit facility	25
Line of credit facility interest rate description	As of September 30, 2012, borrowings under the global revolving credit facility bore interest at a blended rate of 1.79% (GBP), 1.56% (Singapore Dollars), 4.83% (Australian Dollars) and 1.55% (Hong Kong Dollars), which are based on 1-month GBP LIBOR, 1-month SIBOR, 1-month BBR and 1-month HIBOR, respectively, plus a margin of 1.25%.
Interest rate basis spread	1.25%
Capitalized financing costs related to global revolving facilities	11,200,000
Principal outstanding	526,372,000	[1]		275,106,000	[1]
Letter of credit security amount	22,400,000
GBP [Member]
Debt of the Operating Partnership [Line Items]
Blended interest rate	1.79%
Variable rate basis description	1-month GBP LIBOR
Principal outstanding	447,018,000	[2]		49,892,000	[3]
SGD [Member]
Debt of the Operating Partnership [Line Items]
Blended interest rate	1.56%
Variable rate basis description	1-month SIBOR
Principal outstanding	21,183,000	[2]		28,151,000	[3]
AUD [Member]
Debt of the Operating Partnership [Line Items]
Blended interest rate	4.83%
Variable rate basis description	1-month BBR
Principal outstanding	39,021,000	[2]		3,063,000	[3]
HKD [Member]
Debt of the Operating Partnership [Line Items]
Blended interest rate	1.55%
Variable rate basis description	1-month HIBOR
Principal outstanding	19,150,000	[2]
Accordian Feature [Member]
Debt of the Operating Partnership [Line Items]
Revolving credit facility borrowing capacity	$ 2,250,000,000

[1] 2) Balances as of September 30, 2012 and December 31, 2011 are as follows (balances, in thousands): Denomination of Draw Balance as of September 30, 2012 Weighted-average interest rate Balance as of December 31, 2011 Weighted-average interest rate US ($) $ - 0.00% $ 194,000 1.54% British Sterling (£) 447,018 (a) 1.79% 49,892 (b) 1.99% Singapore Dollar (SGD) 21,183 (a) 1.56% 28,151 (b) 1.56% Australian Dollar (AUD) 39,021 (a) 4.83% 3,063 (b) 5.89% Hong Kong Dollar (HKD) 19,150 (a) 1.55% - - Total $ 526,372 1.99% $ 275,106 1.67% (a) Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012. (b) Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

[2] Based on exchange rates of $1.62 to £1.00, $0.81 to 1.00 SGD, $1.04 to 1.00 AUD and $0.13 to 1.00 HKD, respectively, as of September 30, 2012.

[3] Based on exchange rates of $1.55 to £1.00, $0.77 to 1.00 SGD and $1.02 to 1.00 AUD, respectively, as of December 31, 2011.

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Investments In Real Estate (Narrative) (Details)	3 Months Ended		9 Months Ended			0 Months Ended		3 Months Ended		9 Months Ended		6 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Dec. 31, 2011 USD ($)	Jul. 11, 2012 Sentrum Portfolio [Member] USD ($) sqft	Jul. 11, 2012 Sentrum Portfolio [Member] GBP (£)	Sep. 30, 2012 Sentrum Portfolio [Member] USD ($)		Sep. 30, 2012 Sentrum Portfolio [Member] USD ($)		Jun. 30, 2012 Savvis Joint Venture Property, Hong Kong [Member] USD ($)	Jun. 26, 2012 Savvis Joint Venture Property, Hong Kong [Member] sqft
Business Acquisition [Line Items]
Acquisition, Date Acquired						Jul. 11, 2012	Jul. 11, 2012			Jul. 11, 2012	[1]	Jun. 26, 2012
Square footage of real estate property						733,000	733,000						164,000
Acquisition, Amount	$ 1,462,200,000		$ 1,462,200,000			$ 1,100,000,000	£ 734,600,000	$ 1,138,600,000	[1]	$ 1,138,600,000	[1]	$ 20,600,000
Acquisition allocation to land						18,100,000
Acquisition allocation to ground leases						7,000,000
Acquisition allocation to buildings and improvements						1,200,000,000
Acquisition allocation to tenant improvements						11,600,000
Acquisition allocation to intangible assets						151,600,000
Acquired in place lease value, Net	492,393,000		492,393,000		335,381,000	107,200,000
Acquired above market leases, Net	68,269,000		68,269,000		29,701,000	44,400,000
Acquisition allocation to intangible liabilities						38,200,000
Operating revenue	342,479,000	273,476,000	929,331,000	792,098,000				28,400,000		28,400,000
Operating income	$ 97,075,000	$ 71,626,000	$ 271,440,000	$ 223,011,000				$ 6,800,000		$ 6,800,000

[1] On July 11, 2012, we completed the acquisition of a three-property data center portfolio, totaling approximately 733,000 square feet, located in the greater London area, referred to as the Sentrum Portfolio. The purchase price was £734.6 million (equivalent to approximately $1.1 billion based on the July 11, 2012 exchange rate of £1.00 to $1.55), which includes an £18.7 million (equivalent to approximately $29.0 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) adjustment in the purchase price to reflect amounts associated with the early repayment of property debt. In addition, non-cash consideration of £56.5 million (or $87.6 million based on the July 11, 2012 exchange rate of £1.00 to $1.55) was recorded as the expected fair value of contingent consideration as required by prevailing accounting guidance. There was also a non-cash purchase adjustment related to deferred taxes, which amounted to £68.6 million (or $106.3 million based on the July 11, 2012 exchange rate of £1.00 to $1.55). The purchase price was paid in cash funded with proceeds from our common stock offering in July 2012 along with borrowings under our global revolving credit facility.

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Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 56,921	$ 37,689	$ 160,152	$ 114,929
Other comprehensive income (loss):
Foreign currency translation adjustments	34,985	(35,580)	36,286	(10,543)
Decrease in fair value of interest rate swaps	(3,906)	(2,089)	(6,794)	(3,036)
Reclassification to interest expense from interest rate swaps	1,174	1,293	2,964	4,467
Comprehensive income	89,174	1,313	192,608	105,817
Comprehensive (income) loss attributable to noncontrolling interests	(2,605)	207	(5,484)	(4,180)
Comprehensive income attributable to Digital Realty Trust, Inc./L.P	86,569	1,520	187,124	101,637
Digital Realty Trust, L.P. [Member]
Net income	56,921	37,689	160,152	114,929
Other comprehensive income (loss):
Foreign currency translation adjustments	34,985	(35,580)	36,286	(10,543)
Decrease in fair value of interest rate swaps	(3,906)	(2,089)	(6,794)	(3,036)
Reclassification to interest expense from interest rate swaps	1,174	1,293	2,964	4,467
Comprehensive income	$ 89,174	$ 1,313	$ 192,608	$ 105,817

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Organization And Description Of Business

9 Months Ended

Sep. 30, 2012

Organization And Description Of Business

1. Organization and Description of Business

Digital Realty Trust, Inc. through its controlling interest in Digital Realty Trust, L.P. (the Operating Partnership) and the subsidiaries of the Operating Partnership (collectively, we, our, us or the Company) is engaged in the business of owning, acquiring, developing, redeveloping and managing technology-related real estate. The Company is focused on providing customer driven datacenter solutions for domestic and international tenants across a variety of industry verticals ranging from information technology and Internet enterprises, to manufacturing and financial services. As of September 30, 2012, our portfolio consisted of 110 properties, excluding three properties held as investments in unconsolidated joint ventures and land held for development, of which 91 are located throughout North America, 18 are located in Europe and one is located in Asia. We are diversified in major markets where corporate datacenter and technology tenants are concentrated, including the Boston, Chicago, Dallas, Los Angeles, New York Metro, Northern Virginia, Phoenix, San Francisco and Silicon Valley metropolitan areas in the U.S., Amsterdam, Dublin, London and Paris markets in Europe and Singapore, Sydney and Melbourne markets in the Asia Pacific region. The portfolio consists of Internet gateway and corporate datacenter properties, technology manufacturing properties and regional or national headquarters of technology companies.

The Operating Partnership was formed on July 21, 2004 in anticipation of Digital Realty Trust, Inc.’s initial public offering (IPO) on November 3, 2004 and commenced operations on that date. As of September 30, 2012, Digital Realty Trust, Inc. owns a 96.4% common interest and a 100% preferred interest in the Operating Partnership. As sole general partner, Digital Realty Trust, Inc. has control over the Operating Partnership. The limited partners of the Operating Partnership do not have rights to replace Digital Realty Trust, Inc. as the general partner nor do they have participating rights, although they do have certain protective rights.

Digital Realty Trust, L.P. [Member]

Organization And Description Of Business

1. Organization and Description of Business

Digital Realty Trust, Inc. through its controlling interest in Digital Realty Trust, L.P. (the Operating Partnership) and the subsidiaries of the Operating Partnership (collectively, we, our, us or the Company) is engaged in the business of owning, acquiring, developing, redeveloping and managing technology-related real estate. The Company is focused on providing customer driven datacenter solutions for domestic and international tenants across a variety of industry verticals ranging from information technology and Internet enterprises, to manufacturing and financial services. As of September 30, 2012, our portfolio consisted of 110 properties, excluding three properties held as investments in unconsolidated joint ventures and land held for development, of which 91 are located throughout North America, 18 are located in Europe and one is located in Asia. We are diversified in major markets where corporate datacenter and technology tenants are concentrated, including the Boston, Chicago, Dallas, Los Angeles, New York Metro, Northern Virginia, Phoenix, San Francisco and Silicon Valley metropolitan areas in the U.S., Amsterdam, Dublin, London and Paris markets in Europe and Singapore, Sydney and Melbourne markets in the Asia Pacific region. The portfolio consists of Internet gateway and corporate datacenter properties, technology manufacturing properties and regional or national headquarters of technology companies.

The Operating Partnership was formed on July 21, 2004 in anticipation of Digital Realty Trust, Inc.’s initial public offering (IPO) on November 3, 2004 and commenced operations on that date. As of September 30, 2012, Digital Realty Trust, Inc. owns a 96.4% common interest and a 100% preferred interest in the Operating Partnership. As sole general partner, Digital Realty Trust, Inc. has control over the Operating Partnership. The limited partners of the Operating Partnership do not have rights to replace Digital Realty Trust, Inc. as the general partner nor do they have participating rights, although they do have certain protective rights.

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Debt Of The Operating Partnership (Schedule Of Debt Maturities And Principal Maturities) (Details) (USD $)	9 Months Ended
	Sep. 30, 2012		Dec. 31, 2011
Debt of the Operating Partnership [Line Items]
Total, Unsecured Debt	$ 1,737,881,000		$ 1,441,072,000
Total, Exchangeable Senior Debentures	266,400,000		266,400,000
Total, Mortgage Loans	794,485,000		947,132,000
Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Remainder of 2012	3,765,000
2013	226,837,000
2014	482,788,000
2015	1,043,865,000
2016	216,979,000
Thereafter	2,115,700,000
Subtotal	4,089,934,000
Unamortized discounts	(12,119,000)		(8,928,000)
Unamortized premium	2,258,000
Total, Unsecured Debt	1,737,881,000		1,441,072,000
Total, Senior Notes	1,562,881,000		1,266,072,000
Total, Exchangeable Senior Debentures	266,400,000		266,400,000
Total, Mortgage Loans	794,485,000		947,132,000
Total Indebtedness	4,080,073,000		2,940,210,000
Global Revolving Credit Facility [Member]
Debt of the Operating Partnership [Line Items]
Total, Credit Facility	526,372,000		275,106,000
Global Revolving Credit Facility [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
2015	526,372,000	[1]
Subtotal	526,372,000	[1]
Total, Credit Facility	526,372,000	[1]	275,106,000
Revolving credit facility commitments extension (years)	1 year
Unsecured Term Loan [Member]
Debt of the Operating Partnership [Line Items]
Total, Credit Facility	754,935,000
Unsecured Term Loan [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Thereafter	754,935,000
Subtotal	754,935,000
Total, Credit Facility	754,935,000
Unsecured Senior Notes [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
2013	33,000,000
2015	67,000,000
2016	25,000,000
Thereafter	50,000,000
Subtotal	175,000,000
Total, Unsecured Debt	175,000,000
Senior Notes [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
2015	375,000,000
Thereafter	1,200,000,000
Subtotal	1,575,000,000
Unamortized discounts	(12,119,000)
Total, Senior Notes	1,562,881,000
Exchangeable Senior Debentures [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
2014	266,400,000
Subtotal	266,400,000
Total, Exchangeable Senior Debentures	266,400,000		266,400,000
First redemption date	Apr. 01, 2014
Mortgage Loans [Member] | Digital Realty Trust, L.P. [Member]
Debt of the Operating Partnership [Line Items]
Remainder of 2012	3,765,000	[2]
2013	193,837,000	[2]
2014	216,388,000	[2]
2015	75,493,000	[2]
2016	191,979,000	[2]
Thereafter	110,765,000	[2]
Subtotal	792,227,000	[2]
Unamortized premium	2,258,000	[2]	2,077,000
Total, Mortgage Loans	794,485,000	[2]
Limited recourse guarantees	38,600,000
Partial letter of credit	$ 37,200,000

[1] Subject to a one-year extension option exercisable by us. The bank group is obligated to grant the extension option provided we give proper notice, we make certain representations and warranties and no default exists under the global revolving credit facility.

[2] Our mortgage loans are generally non-recourse to us, subject to carve-outs for specified actions by us or specified undisclosed environmental liabilities. As of September 30, 2012, we provided limited recourse guarantees with respect to approximately $38.6 million of the outstanding mortgage indebtedness, and partial letter of credit support with respect to approximately an additional $37.2 million of the outstanding mortgage indebtedness (based on exchange rates as of September 30, 2012).

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Fair Value Of Instruments (Estimated Fair Value And Carrying Amounts) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012		Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other secured loan			$ 10,500
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unsecured senior notes	1,923,854	[1],[2]	1,502,271	[1],[2]
Exchangeable senior debentures	460,347	[1],[2]	438,327	[1],[2]
Mortgage Loans	850,356	[1]	1,007,615	[1]
Other secured loan			10,688
Long-term Debt	4,515,864		3,234,007
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unsecured senior notes	1,737,881	[1],[2]	1,441,072	[1],[2]
Exchangeable senior debentures	266,400	[1],[2]	266,400	[1],[2]
Mortgage Loans	794,485	[1]	947,132	[1]
Other secured loan			10,500
Long-term Debt	4,080,073		2,940,210
Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unamortized discount	12,119		8,928
Global Revolving Credit Facility [Member] | Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	526,372	[3]	275,106	[3]
Global Revolving Credit Facility [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	526,372	[3]	275,106	[3]
Unsecured Term Loan [Member] | Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	754,935	[4]
Unsecured Term Loan [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Lines of credit	$ 754,935	[4]

[1] Valuations for our unsecured senior notes, mortgage loans and other secured loan are determined based on the expected future payments discounted at risk-adjusted rates. The 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes and exchangeable senior debentures are valued based on quoted market prices.

[2] The carrying value of the 2015 Notes, 2020 Notes, 2021 Notes and 2022 Notes are net of discount of $12,119 and $8,928 in the aggregate as of September 30, 2012 and December 31, 2011, respectively.

[3] The carrying value of our global revolving credit facility approximates estimated fair value, due to the short-term nature of this instrument along with the variability of interest rates.

[4] The carrying value of our unsecured term loan approximates estimated fair value, due to the variability of interest rates.

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Equity And Accumulated Other Comprehensive Loss, Net (Schedule Of Dividends) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended		12 Months Ended
	Sep. 30, 2012		Dec. 31, 2012	Dec. 31, 2011
Series C Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	$ 1,402	[1],[2]
Preferred stock dividend per share amount	$ 1.094
Preferred stock, conversion date	Apr. 17, 2012
Preferred stock, dividend rate	4.375%			4.375%
Shares issued upon conversion	0.5480
Series D Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividend/Distribution payable date			Dec. 31, 2012
Dividends/Distributions, preferred stock/units	6,515	[3]
Preferred stock dividend per share amount	$ 1.375		$ 1.375
Preferred stock, dividend rate	5.50%			5.50%
Series E Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividend/Distribution payable date			Dec. 31, 2012
Dividends/Distributions, preferred stock/units	15,093	[4]
Preferred stock dividend per share amount	$ 1.750		$ 1.750
Preferred stock, dividend rate	7.00%			7.00%
Series F Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividend/Distribution payable date			Dec. 31, 2012
Dividends/Distributions, preferred stock/units	5,911	[5]
Preferred stock dividend per share amount	$ 1.656		$ 1.65625
Preferred stock, dividend rate	6.625%			6.625%
Common Stock [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividend/Distribution payable date			Jan. 15, 2013
Dividends/Distributions, common stock/units	248,492	[6]
Preferred stock dividend per share amount			$ 2.920
Common stock dividend per share amount	$ 2.920
February 14, 2012 [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date dividend/distribution declared	Feb. 14, 2012
Dividend/Distribution payable date	Mar. 30, 2012
February 14, 2012 [Member] | Series C Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	1,402	[1],[2]
February 14, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	2,398	[3]
February 14, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	5,031	[4]
February 14, 2012 [Member] | Common Stock [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, common stock/units	78,335	[6]
April 23, 2012 [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date dividend/distribution declared	Apr. 23, 2012
Dividend/Distribution payable date	Jun. 29, 2012
April 23, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	2,394	[3]
April 23, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	5,031	[4]
April 23, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	2,888	[5],[7]
April 23, 2012 [Member] | Common Stock [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, common stock/units	80,478	[6]
July 19, 2012 [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Date dividend/distribution declared	Jul. 19, 2012
Dividend/Distribution payable date	Sep. 28, 2012
July 19, 2012 [Member] | Series D Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	1,723	[3]
July 19, 2012 [Member] | Series E Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	5,031	[4]
July 19, 2012 [Member] | Series F Cumulative Convertible Preferred Units [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, preferred stock/units	3,023	[5]
July 19, 2012 [Member] | Common Stock [Member]
Equity and Accumulated Other Comprehensive Income (Loss) [Line Items]
Dividends/Distributions, common stock/units	$ 89,679	[6]

[1] $1.094 annual rate of dividend per share.

[2] Effective April 17, 2012, Digital Realty Trust, Inc. converted all outstanding shares of its 4.375% series C cumulative convertible preferred stock, or the series C preferred stock, into shares of its of common stock in accordance with the terms of the series C preferred stock. Each share of series C preferred stock was converted into 0.5480 share of common stock of Digital Realty Trust, Inc.

[3] $1.375 annual rate of dividend per share.

[4] $1.750 annual rate of dividend per share.

[5] $1.656 annual rate of dividend per share.

[6] $2.920 annual rate of dividend per share.

[7] Represents a pro rata dividend from and including the original issue date to and including June 30, 2012.

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Summary Of Significant Accounting Policies (Policy)

9 Months Ended

Sep. 30, 2012

Principles Of Consolidation And Basis Of Presentation

(a) Principles of Consolidation and Basis of Presentation

The accompanying interim condensed consolidated financial statements include all of the accounts of Digital Realty Trust, Inc., the Operating Partnership and the subsidiaries of the Operating Partnership. Intercompany balances and transactions have been eliminated.

The accompanying interim condensed consolidated financial statements are unaudited, but have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) for interim financial information and in compliance with the rules and regulations of the United States Securities and Exchange Commission. Accordingly, they do not include all of the disclosures required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments necessary for a fair presentation have been included. All such adjustments are considered to be of a normal recurring nature, except as otherwise indicated. The results of operations for the interim periods are not necessarily indicative of the results to be obtained for the full fiscal year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our annual report on Form 10-K for the year ended December 31, 2011.

The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide the following benefits:

• enhancing investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;

• eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and

• creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.

There are few differences between the Company and the Operating Partnership, which are reflected in these condensed consolidated financial statements. We believe it is important to understand the differences between the Company and the Operating Partnership in the context of how we operate as an interrelated consolidated company. Digital Realty Trust, Inc.’s only material asset is its ownership of partnership interests of the Operating Partnership. As a result, Digital Realty Trust, Inc. does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing public equity from time to time and guaranteeing certain unsecured debt of the Operating Partnership. Digital Realty Trust, Inc. itself does not hold any indebtedness but guarantees the unsecured debt of the Operating Partnership and certain of its subsidiaries, as disclosed in these notes. The Operating Partnership holds substantially all the assets of the Company and holds the ownership interests in the Company’s joint ventures. The Operating Partnership conducts the operations ofthe business and is structured as a partnership with no publicly traded equity. Except for net proceeds from public equity issuances by Digital Realty Trust, Inc., which are generally contributed to the Operating Partnership in exchange for partnership units, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, by the Operating Partnership’s direct or indirect incurrence of indebtedness or through the issuance of partnership units.

The presentation of noncontrolling interests in operating partnership, stockholder’s equity and partners’ capital are the main areas of difference between the condensed consolidated financial statements of Digital Realty Trust, Inc. and those of the Operating Partnership. The common limited partnership interests held by the limited partners in the Operating Partnership are presented as limited partners’ capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as noncontrolling interests in operating partnership within equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The common and preferred partnership interests held by Digital Realty Trust, Inc. in the Operating Partnership are presented as general partner’s capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as preferred stock, common stock, additional paid-in capital and accumulated dividends in excess of earnings within stockholders’ equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The differences in the presentations between stockholders’ equity and partners’ capital result from the differences in the equity issued at the Digital Realty Trust, Inc. and the Operating Partnership levels.

To help investors understand the significant differences between the Company and the Operating Partnership, these condensed consolidated financial statements present the following separate sections for each of the Company and the Operating Partnership:

• condensed consolidated face financial statements; and

• the following notes to the condensed consolidated financial statements:

• Debt of the Company and Debt of the Operating Partnership;

• Income per Share and Income per Unit; and

• Equity and Accumulated Other Comprehensive Loss, Net of the Company and Capital and Comprehensive Income of the Operating Partnership.

In the sections that combine disclosure of Digital Realty Trust, Inc. and the Operating Partnership, these notes refer to actions or holdings as being actions or holdings of the Company. Although the Operating Partnership is generally the entity that enters into contracts and joint ventures and holds assets and debt, reference to the Company is appropriate because the business is one enterprise and the Company operates the business through the Operating Partnership.  

Cash Equivalents

(b) Cash Equivalents

For the purpose of the condensed consolidated statements of cash flows, we consider short-term investments with original maturities of 90 days or less to be cash equivalents. As of September 30, 2012, cash equivalents consist of investments in money market instruments.

Share Based Compensation

(c) Share Based Compensation

We account for share based compensation using the fair value method of accounting. The estimated fair value of the stock options granted by us is being amortized on a straight-line basis over the vesting period of the stock options. The estimated fair value of the long-term incentive units and Class C Units (discussed in note 12(b)) granted by us is being amortized on a straight-line basis over the expected service period.

For share based compensation awards with performance conditions, we estimate the fair value of the award for each of the possible performance condition outcomes and amortize the compensation cost based on management’s projected performance outcome. In the instance management’s projected performance outcome changes prior to the final measurement date, compensation cost is adjusted accordingly.

Income Taxes

(d) Income Taxes

Digital Realty Trust, Inc. (the Parent Company) has elected to be treated and believes that it has been organized and has operated in a manner that has enabled the Parent Company to qualify as a REIT for federal income tax purposes. As a REIT, the Parent Company generally is not required to pay federal corporate income taxes on its taxable income to the extent it is currently distributed to its stockholders.

However, qualification and taxation as a REIT depend upon the Parent Company’s ability to meet the various qualification tests imposed under the Internal Revenue Code of 1986, as amended (the Code), including tests related to annual operating results, asset composition, distribution levels and diversity of stock ownership. Accordingly, no assurance can be given that the Parent Company has been organized or has operated or will continue to operate in a manner so as to qualify or remain qualified as a REIT. If the Parent Company fails to qualify as a REIT in any taxable year, it will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates.

The Operating Partnership is a partnership and is not required to pay federal income tax. Instead, taxable income is allocated to its partners, who include such amounts on their federal income tax returns. As such, no provision for federal income taxes has been included in the Operating Partnership’s accompanying condensed consolidated financial statements.

Even if the Parent Company and the Operating Partnership are not subject to federal income taxes, they are taxed in certain states in which they operate. The Company is also taxed in non-U.S. countries where it operates that do not recognize U.S. REITs under their respective tax laws. The Company’s consolidated taxable REIT subsidiary is subject to both federal and state income taxes to the extent there is taxable income. Accordingly, the Company recognizes and accrues income taxes for its taxable REIT subsidiary, certain states and non-U.S. jurisdictions, as appropriate.

We assess our significant tax positions in accordance with U.S. GAAP for all open tax years and determine whether we have any material unrecognized liabilities from uncertain tax benefits. If a tax position is not considered “more-likely-than-not” to be sustained solely on its technical merits, no benefits of the tax position are to be recognized (for financial statement purposes). As of September 30, 2012 and December 31, 2011, we have no assets or liabilities for uncertain tax positions. We classify interest and penalties from significant uncertain tax positions as interest expense and operating expense, respectively, in our condensed consolidated statements of operations. For the three and nine months ended September 30, 2012 and 2011, we had no such interest or penalties. The tax years 2009 through 2011 remain open to examination by the major taxing jurisdictions with which the Parent Company and its subsidiaries file tax returns.

See Note 9 for further discussion on income taxes.

Presentation Of Transactional-Based Taxes

(e) Presentation of Transactional-based Taxes

We account for transactional-based taxes, such as value added tax, or VAT, for our international properties on a net basis.

Asset Retirement Obligations

(f) Asset Retirement Obligations

We record accruals for estimated retirement obligations as required by current accounting guidance. The amount of asset retirement obligations relates primarily to estimated asbestos removal costs at the end of the economic life of properties that were built before 1984. As of September 30, 2012 and December 31, 2011, the amount included in accounts payable and other accrued liabilities on our condensed consolidated balance sheets was approximately $1.7 million and $1.2 million, respectively.

Construction Management Revenue

(g) Construction Management Revenue

Construction management revenue for long-term contracts are recognized under the percentage-of-completion method of accounting. Revenues are determined by measuring the percentage of total costs incurred to date to estimated total costs for each construction management contract based on current estimates of costs to complete. Contract costs include all labor and benefits, materials, subcontracts, and an allocation of indirect costs related to contract performance. Indirect costs are allocated to projects based upon labor hours charged. Third party costs are included in construction management expense and their reimbursements are included in construction management revenue to the extent that the Company is the primary obligor for the third party costs.  Otherwise, construction management revenue and expense is reflected net of third party costs.  As long-term design-build projects extend over one or more years, revisions in cost and estimated earnings during the course of the work are reflected in the accounting period in which the facts which require the revision become known. At the time a loss on a design-build project becomes known, the entire amount of the estimated loss is recognized in the condensed consolidated financial statements. Change orders are recognized when they are approved by the client.

Costs and estimated earnings in excess of billings on uncompleted construction management projects are included in other assets in the condensed consolidated balance sheets. Billings in excess of costs and estimated earnings on uncompleted construction management projects are included in accounts payable and other accrued liabilities in the condensed consolidated balance sheets. Customers are billed on a monthly basis at the end of each month, which can be in advance of work performed.

Assets And Liabilities Measured At Fair Value

(h) Assets and Liabilities Measured at Fair Value

Fair value under U.S. GAAP is a market-based measurement, not an entity-specific measurement. Therefore, our fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair-value measurements, we use a fair-value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair-value measurement is based on inputs from different levels of the fair-value hierarchy, the level in the fair-value hierarchy within which the entire fair-value measurement falls is based on the lowest level input that is significant to the fair-value measurement in its entirety. Our assessment of the significance of a particular input to the fair-value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.

Transactions Expense

(i) Transactions Expense

Transactions expense includes acquisition-related expenses and other business development expenses, which are expensed as incurred. Acquisition-related expenses include closing costs, broker commissions and other professional fees, including legal and accounting fees related to acquisitions and potential acquisitions.

Capitalization Of Costs

(j) Capitalization of Costs

Direct and indirect project costs that are clearly associated with the development and redevelopment of properties are capitalized as incurred. Project costs include all costs directly associated with the development or redevelopment of a property, including construction costs, interest, property taxes, insurance, legal fees and costs of personnel working on the project. Indirect costs that do not clearly relate to the projects under development/redevelopment are not capitalized and are charged to expense as incurred.

Capitalization of costs begins when the activities necessary to get the development/redevelopment project ready for its intended use begins, which include costs incurred before the beginning of construction. Capitalization of costs ceases when the development/redevelopment project is substantially complete and ready for its intended use. Determining when a development/redevelopment project commences, and when it is substantially complete and ready for its intended use involves a degree of judgment. We generally consider a development/redevelopment project to be substantially complete and ready for its intended use upon commissioning, which is when the redeveloped/developed project has been tested at full load, or receipt of a certificate of occupancy. We cease cost capitalization if activities necessary for the development/redevelopment of the property have been suspended. Capitalized costs are allocated to the specific components of a project that are benefited.

During the three months ended September 30, 2012 and 2011, we capitalized interest of approximately $4.5 million and $4.8 million, respectively, and $13.6 million and $13.6 million during the nine months ended September 30, 2012 and 2011, respectively. During the three months ended September 30, 2012 and 2011, we capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $8.0 million and $6.5 million, respectively, and $23.3 million and $18.8 million during the nine months ended September 30, 2012 and 2011, respectively. Cash flows from capitalized leasing costs of $26.5 million and $19.1 million are included in improvements to and advances for investments in real estate in cash flows from investing activities in the condensed consolidated statements of cash flows for the nine months ended September 30, 2012 and 2011, respectively.

Management's Estimates

(k) Management’s Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates made. On an on-going basis, we evaluate our estimates, including those related to the valuation of our real estate properties, accounts receivable and deferred rent receivable, performance-based equity compensation plans, the completeness of accrued liabilities and Digital Realty Trust, Inc.’s qualification as a REIT. We base our estimates on historical experience, current market conditions, and various other assumptions that are believed to be reasonable under the circumstances. Actual results may vary from those estimates and those estimates could vary under different assumptions or conditions.

Segment Information

(l) Segment Information

All of our properties generate similar revenues and expenses related to tenant rent and reimbursements and operating expenses. The delivery of our products is consistent across all properties and although services are provided to a wide range of customers, the types of services provided to them are limited to a few core principles. As such, the properties in our portfolio have similar economic characteristics and the nature of the products and services provided to our customers and the method to distribute such services are consistent throughout the portfolio. Consequently, our properties qualify for aggregation into one reporting segment.

Recent Accounting Pronouncements

(m) Recent Accounting Pronouncements

In May 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2011-04, Fair Value Measurement (Topic 820). This ASU is intended to create consistency between U.S. GAAP and International Financial Reporting Standards on the definition of fair value and on the guidance on how to measure fair value and on what to disclose about fair value measurements. We adopted this accounting guidance for financial statements issued for fiscal periods beginning after December 15, 2011. This update did not have a material effect on our financial statements.

In June 2011, the FASB issued ASU No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income (“ASU 2011-05”). This update amends Accounting Standards Codification (“ASC”) Topic 220, Comprehensive Income, to provide that total comprehensive income will be reported in one continuous statement or two separate but consecutive statements of financial performance. Presentation of total comprehensive income in the statement of stockholders’ equity (or statement of capital) or the footnotes will no longer be allowed. The calculation of net income and basic and diluted net income per share (or per unit) was not affected. ASU 2011-05 is effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2011. This update did not have a material effect on our financial statements.

Digital Realty Trust, L.P. [Member]

Principles Of Consolidation And Basis Of Presentation

(a) Principles of Consolidation and Basis of Presentation

The accompanying interim condensed consolidated financial statements include all of the accounts of Digital Realty Trust, Inc., the Operating Partnership and the subsidiaries of the Operating Partnership. Intercompany balances and transactions have been eliminated.

The accompanying interim condensed consolidated financial statements are unaudited, but have been prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) for interim financial information and in compliance with the rules and regulations of the United States Securities and Exchange Commission. Accordingly, they do not include all of the disclosures required by U.S. GAAP for complete financial statements. In the opinion of management, all adjustments necessary for a fair presentation have been included. All such adjustments are considered to be of a normal recurring nature, except as otherwise indicated. The results of operations for the interim periods are not necessarily indicative of the results to be obtained for the full fiscal year. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and the notes thereto included in our annual report on Form 10-K for the year ended December 31, 2011.

The notes to the condensed consolidated financial statements of Digital Realty Trust, Inc. and the Operating Partnership have been combined to provide the following benefits:

• enhancing investors’ understanding of the Company and the Operating Partnership by enabling investors to view the business as a whole in the same manner as management views and operates the business;

• eliminating duplicative disclosure and providing a more streamlined and readable presentation since a substantial portion of the disclosure applies to both the Company and the Operating Partnership; and

• creating time and cost efficiencies through the preparation of one set of notes instead of two separate sets of notes.

There are few differences between the Company and the Operating Partnership, which are reflected in these condensed consolidated financial statements. We believe it is important to understand the differences between the Company and the Operating Partnership in the context of how we operate as an interrelated consolidated company. Digital Realty Trust, Inc.’s only material asset is its ownership of partnership interests of the Operating Partnership. As a result, Digital Realty Trust, Inc. does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing public equity from time to time and guaranteeing certain unsecured debt of the Operating Partnership. Digital Realty Trust, Inc. itself does not hold any indebtedness but guarantees the unsecured debt of the Operating Partnership and certain of its subsidiaries, as disclosed in these notes. The Operating Partnership holds substantially all the assets of the Company and holds the ownership interests in the Company’s joint ventures. The Operating Partnership conducts the operations ofthe business and is structured as a partnership with no publicly traded equity. Except for net proceeds from public equity issuances by Digital Realty Trust, Inc., which are generally contributed to the Operating Partnership in exchange for partnership units, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, by the Operating Partnership’s direct or indirect incurrence of indebtedness or through the issuance of partnership units.

The presentation of noncontrolling interests in operating partnership, stockholder’s equity and partners’ capital are the main areas of difference between the condensed consolidated financial statements of Digital Realty Trust, Inc. and those of the Operating Partnership. The common limited partnership interests held by the limited partners in the Operating Partnership are presented as limited partners’ capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as noncontrolling interests in operating partnership within equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The common and preferred partnership interests held by Digital Realty Trust, Inc. in the Operating Partnership are presented as general partner’s capital within partners’ capital in the Operating Partnership’s condensed consolidated financial statements and as preferred stock, common stock, additional paid-in capital and accumulated dividends in excess of earnings within stockholders’ equity in Digital Realty Trust, Inc.’s condensed consolidated financial statements. The differences in the presentations between stockholders’ equity and partners’ capital result from the differences in the equity issued at the Digital Realty Trust, Inc. and the Operating Partnership levels.

To help investors understand the significant differences between the Company and the Operating Partnership, these condensed consolidated financial statements present the following separate sections for each of the Company and the Operating Partnership:

• condensed consolidated face financial statements; and

• the following notes to the condensed consolidated financial statements:

• Debt of the Company and Debt of the Operating Partnership;

• Income per Share and Income per Unit; and

• Equity and Accumulated Other Comprehensive Loss, Net of the Company and Capital and Comprehensive Income of the Operating Partnership.

In the sections that combine disclosure of Digital Realty Trust, Inc. and the Operating Partnership, these notes refer to actions or holdings as being actions or holdings of the Company. Although the Operating Partnership is generally the entity that enters into contracts and joint ventures and holds assets and debt, reference to the Company is appropriate because the business is one enterprise and the Company operates the business through the Operating Partnership.  

Cash Equivalents

(b) Cash Equivalents

For the purpose of the condensed consolidated statements of cash flows, we consider short-term investments with original maturities of 90 days or less to be cash equivalents. As of September 30, 2012, cash equivalents consist of investments in money market instruments.

Share Based Compensation

(c) Share Based Compensation

We account for share based compensation using the fair value method of accounting. The estimated fair value of the stock options granted by us is being amortized on a straight-line basis over the vesting period of the stock options. The estimated fair value of the long-term incentive units and Class C Units (discussed in note 12(b)) granted by us is being amortized on a straight-line basis over the expected service period.

For share based compensation awards with performance conditions, we estimate the fair value of the award for each of the possible performance condition outcomes and amortize the compensation cost based on management’s projected performance outcome. In the instance management’s projected performance outcome changes prior to the final measurement date, compensation cost is adjusted accordingly.

Income Taxes

(d) Income Taxes

Digital Realty Trust, Inc. (the Parent Company) has elected to be treated and believes that it has been organized and has operated in a manner that has enabled the Parent Company to qualify as a REIT for federal income tax purposes. As a REIT, the Parent Company generally is not required to pay federal corporate income taxes on its taxable income to the extent it is currently distributed to its stockholders.

However, qualification and taxation as a REIT depend upon the Parent Company’s ability to meet the various qualification tests imposed under the Internal Revenue Code of 1986, as amended (the Code), including tests related to annual operating results, asset composition, distribution levels and diversity of stock ownership. Accordingly, no assurance can be given that the Parent Company has been organized or has operated or will continue to operate in a manner so as to qualify or remain qualified as a REIT. If the Parent Company fails to qualify as a REIT in any taxable year, it will be subject to federal income tax (including any applicable alternative minimum tax) on its taxable income at regular corporate tax rates.

The Operating Partnership is a partnership and is not required to pay federal income tax. Instead, taxable income is allocated to its partners, who include such amounts on their federal income tax returns. As such, no provision for federal income taxes has been included in the Operating Partnership’s accompanying condensed consolidated financial statements.

Even if the Parent Company and the Operating Partnership are not subject to federal income taxes, they are taxed in certain states in which they operate. The Company is also taxed in non-U.S. countries where it operates that do not recognize U.S. REITs under their respective tax laws. The Company’s consolidated taxable REIT subsidiary is subject to both federal and state income taxes to the extent there is taxable income. Accordingly, the Company recognizes and accrues income taxes for its taxable REIT subsidiary, certain states and non-U.S. jurisdictions, as appropriate.

We assess our significant tax positions in accordance with U.S. GAAP for all open tax years and determine whether we have any material unrecognized liabilities from uncertain tax benefits. If a tax position is not considered “more-likely-than-not” to be sustained solely on its technical merits, no benefits of the tax position are to be recognized (for financial statement purposes). As of September 30, 2012 and December 31, 2011, we have no assets or liabilities for uncertain tax positions. We classify interest and penalties from significant uncertain tax positions as interest expense and operating expense, respectively, in our condensed consolidated statements of operations. For the three and nine months ended September 30, 2012 and 2011, we had no such interest or penalties. The tax years 2009 through 2011 remain open to examination by the major taxing jurisdictions with which the Parent Company and its subsidiaries file tax returns.

See Note 9 for further discussion on income taxes.

Presentation Of Transactional-Based Taxes

(e) Presentation of Transactional-based Taxes

We account for transactional-based taxes, such as value added tax, or VAT, for our international properties on a net basis.

Asset Retirement Obligations

(f) Asset Retirement Obligations

We record accruals for estimated retirement obligations as required by current accounting guidance. The amount of asset retirement obligations relates primarily to estimated asbestos removal costs at the end of the economic life of properties that were built before 1984. As of September 30, 2012 and December 31, 2011, the amount included in accounts payable and other accrued liabilities on our condensed consolidated balance sheets was approximately $1.7 million and $1.2 million, respectively.

Construction Management Revenue

(g) Construction Management Revenue

Construction management revenue for long-term contracts are recognized under the percentage-of-completion method of accounting. Revenues are determined by measuring the percentage of total costs incurred to date to estimated total costs for each construction management contract based on current estimates of costs to complete. Contract costs include all labor and benefits, materials, subcontracts, and an allocation of indirect costs related to contract performance. Indirect costs are allocated to projects based upon labor hours charged. Third party costs are included in construction management expense and their reimbursements are included in construction management revenue to the extent that the Company is the primary obligor for the third party costs.  Otherwise, construction management revenue and expense is reflected net of third party costs.  As long-term design-build projects extend over one or more years, revisions in cost and estimated earnings during the course of the work are reflected in the accounting period in which the facts which require the revision become known. At the time a loss on a design-build project becomes known, the entire amount of the estimated loss is recognized in the condensed consolidated financial statements. Change orders are recognized when they are approved by the client.

Costs and estimated earnings in excess of billings on uncompleted construction management projects are included in other assets in the condensed consolidated balance sheets. Billings in excess of costs and estimated earnings on uncompleted construction management projects are included in accounts payable and other accrued liabilities in the condensed consolidated balance sheets. Customers are billed on a monthly basis at the end of each month, which can be in advance of work performed.

Assets And Liabilities Measured At Fair Value

(h) Assets and Liabilities Measured at Fair Value

Fair value under U.S. GAAP is a market-based measurement, not an entity-specific measurement. Therefore, our fair value measurements are determined based on the assumptions that market participants would use in pricing the asset or liability. As a basis for considering market participant assumptions in fair-value measurements, we use a fair-value hierarchy that distinguishes between market participant assumptions based on market data obtained from sources independent of the reporting entity (observable inputs that are classified within Levels 1 and 2 of the hierarchy) and the reporting entity’s own assumptions about market participant assumptions (unobservable inputs classified within Level 3 of the hierarchy).

Level 1 inputs utilize quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access. Level 2 inputs are inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability which are typically based on an entity’s own assumptions, as there is little, if any, related market activity. In instances where the determination of the fair-value measurement is based on inputs from different levels of the fair-value hierarchy, the level in the fair-value hierarchy within which the entire fair-value measurement falls is based on the lowest level input that is significant to the fair-value measurement in its entirety. Our assessment of the significance of a particular input to the fair-value measurement in its entirety requires judgment, and considers factors specific to the asset or liability.

Transactions Expense

(i) Transactions Expense

Transactions expense includes acquisition-related expenses and other business development expenses, which are expensed as incurred. Acquisition-related expenses include closing costs, broker commissions and other professional fees, including legal and accounting fees related to acquisitions and potential acquisitions.

Capitalization Of Costs

(j) Capitalization of Costs

Direct and indirect project costs that are clearly associated with the development and redevelopment of properties are capitalized as incurred. Project costs include all costs directly associated with the development or redevelopment of a property, including construction costs, interest, property taxes, insurance, legal fees and costs of personnel working on the project. Indirect costs that do not clearly relate to the projects under development/redevelopment are not capitalized and are charged to expense as incurred.

Capitalization of costs begins when the activities necessary to get the development/redevelopment project ready for its intended use begins, which include costs incurred before the beginning of construction. Capitalization of costs ceases when the development/redevelopment project is substantially complete and ready for its intended use. Determining when a development/redevelopment project commences, and when it is substantially complete and ready for its intended use involves a degree of judgment. We generally consider a development/redevelopment project to be substantially complete and ready for its intended use upon commissioning, which is when the redeveloped/developed project has been tested at full load, or receipt of a certificate of occupancy. We cease cost capitalization if activities necessary for the development/redevelopment of the property have been suspended. Capitalized costs are allocated to the specific components of a project that are benefited.

During the three months ended September 30, 2012 and 2011, we capitalized interest of approximately $4.5 million and $4.8 million, respectively, and $13.6 million and $13.6 million during the nine months ended September 30, 2012 and 2011, respectively. During the three months ended September 30, 2012 and 2011, we capitalized amounts relating to compensation expense of employees direct and incremental to construction and successful leasing activities of approximately $8.0 million and $6.5 million, respectively, and $23.3 million and $18.8 million during the nine months ended September 30, 2012 and 2011, respectively. Cash flows from capitalized leasing costs of $26.5 million and $19.1 million are included in improvements to and advances for investments in real estate in cash flows from investing activities in the condensed consolidated statements of cash flows for the nine months ended September 30, 2012 and 2011, respectively.

Management's Estimates

(k) Management’s Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates made. On an on-going basis, we evaluate our estimates, including those related to the valuation of our real estate properties, accounts receivable and deferred rent receivable, performance-based equity compensation plans, the completeness of accrued liabilities and Digital Realty Trust, Inc.’s qualification as a REIT. We base our estimates on historical experience, current market conditions, and various other assumptions that are believed to be reasonable under the circumstances. Actual results may vary from those estimates and those estimates could vary under different assumptions or conditions.

Segment Information

(l) Segment Information

All of our properties generate similar revenues and expenses related to tenant rent and reimbursements and operating expenses. The delivery of our products is consistent across all properties and although services are provided to a wide range of customers, the types of services provided to them are limited to a few core principles. As such, the properties in our portfolio have similar economic characteristics and the nature of the products and services provided to our customers and the method to distribute such services are consistent throughout the portfolio. Consequently, our properties qualify for aggregation into one reporting segment.

Recent Accounting Pronouncements

(m) Recent Accounting Pronouncements

In May 2011, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2011-04, Fair Value Measurement (Topic 820). This ASU is intended to create consistency between U.S. GAAP and International Financial Reporting Standards on the definition of fair value and on the guidance on how to measure fair value and on what to disclose about fair value measurements. We adopted this accounting guidance for financial statements issued for fiscal periods beginning after December 15, 2011. This update did not have a material effect on our financial statements.

In June 2011, the FASB issued ASU No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income (“ASU 2011-05”). This update amends Accounting Standards Codification (“ASC”) Topic 220, Comprehensive Income, to provide that total comprehensive income will be reported in one continuous statement or two separate but consecutive statements of financial performance. Presentation of total comprehensive income in the statement of stockholders’ equity (or statement of capital) or the footnotes will no longer be allowed. The calculation of net income and basic and diluted net income per share (or per unit) was not affected. ASU 2011-05 is effective for fiscal years, and interim periods within those years, beginning on or after December 15, 2011. This update did not have a material effect on our financial statements.

XML

Incentive Plan (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended
	May 02, 2007	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares granted per employee	1,500,000
Maximum amount of cash paid per employee	$ 10.0
Number of shares remaining for issuance under the "Incentive Plan"		3,495,677
2004 Incentive Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized and reserved for issuance under the "Incentive Plan"		4,474,102
Amended And Restated 2004 Incentive Award Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized and reserved for issuance under the "Incentive Plan"	9,474,102
Increase in number of shares reserved for issuance	5,000,000

XML

Subsequent Events (Tables)

9 Months Ended

Sep. 30, 2012

Schedule Of Dividends Declared And Distributions Per Unit

Share Class	Series D Preferred Stock	Series E Preferred Stock	Series F Preferred Stock	Common stock and common unit
Dividend and distribution amount	$ 0.343750	$ 0.437500	$ 0.414063	$ 0.730000
Dividend and distribution payable date	December 31, 2012	December 31, 2012	December 31, 2012	January 15, 2013
Dividend payable to shareholders of record on	December 14, 2012	December 14, 2012	December 14, 2012	December 14, 2012
Annual equivalent rate of dividend and distribution	$ 1.375	$ 1.750	$ 1.65625	$ 2.920

Digital Realty Trust, L.P. [Member]

Schedule Of Dividends Declared And Distributions Per Unit

Share Class	Series D Preferred Stock	Series E Preferred Stock	Series F Preferred Stock	Common stock and common unit
Dividend and distribution amount	$ 0.343750	$ 0.437500	$ 0.414063	$ 0.730000
Dividend and distribution payable date	December 31, 2012	December 31, 2012	December 31, 2012	January 15, 2013
Dividend payable to shareholders of record on	December 14, 2012	December 14, 2012	December 14, 2012	December 14, 2012
Annual equivalent rate of dividend and distribution	$ 1.375	$ 1.750	$ 1.65625	$ 2.920

XML

Capital And Comprehensive Income (Digital Realty Trust, L.P. [Member])

9 Months Ended

Sep. 30, 2012

Digital Realty Trust, L.P. [Member]

Capital And Comprehensive Income

11. Capital and Comprehensive Income

(a) Redeemable Preferred Units

On April 5, 2012 and April 18, 2012, the Operating Partnership issued a total of 7,300,000 units of its 6.625% series F cumulative redeemable preferred units, or series F preferred units, to Digital Realty Trust, Inc. (the General Partner) in conjunction with the General Partner’s issuance of an equivalent number of shares of its 6.625% series F cumulative redeemable preferred stock, or the series F preferred stock. Distributions are cumulative on the series F preferred units from the date of original issuance in the amount of $1.65625 per unit each year, which is equivalent to 6.625% of the $25.00 liquidation preference per unit. Distributions on the series F preferred units are payable quarterly in arrears. The first distribution paid on the series F preferred units on June 29, 2012 was a pro rata distribution from and including the original issue date to and including June 30, 2012 in the amount of $0.39566 per unit. The series F preferred units do not have a stated maturity date and are not subject to any sinking fund. The Operating Partnership is required to redeem the series F preferred units in the event that the General Partner redeems the series F preferred stock. The General Partner is not allowed to redeem the series F preferred stock prior to April 5, 2017 except in limited circumstances to preserve the General Partner’s status as a REIT. On or after April 5, 2017, the General Partner may, at its option, redeem the series F preferred stock, in whole or in part, at any time or from time to time, for cash at a redemption price of $25.00 per share, plus all accrued and unpaid dividends on such series F preferred stock up to but excluding the redemption date. Upon liquidation, dissolution or winding up, the series F preferred units will rank senior to the common units with respect to the payment of distributions and other amounts and rank on parity with the Operating Partnership’s series D cumulative convertible preferred units and series E cumulative redeemable preferred units. Except in connection with specified change of control transactions of the General Partner, the series F preferred units are not convertible into or exchangeable for any other property or securities of the Operating Partnership.

(b) Allocations of Net Income and Net Losses to Partners

Except for special allocations to holders of profits interest units described below in note 12(a) under the heading “Incentive Plan-Long-Term Incentive Units,” the Operating Partnership’s net income will generally be allocated to the General Partner to the extent of the accrued preferred return on its preferred units, and then to the General Partner and the Operating Partnership’s limited partners in accordance with the respective percentage interests in the common units issued by the Operating Partnership. Net loss will generally be allocated to the General Partner and the Operating Partnership’s limited partners in accordance with the respective common percentage interests in the Operating Partnership until the limited partner’s capital is reduced to zero and any remaining net loss would be allocated to the General Partner. However, in some cases, losses may be disproportionately allocated to partners who have guaranteed our debt. The allocations described above are subject to special allocations relating to depreciation deductions and to compliance with the provisions of Sections 704(b) and 704(c) of the Code, and the associated Treasury Regulations.

(c) Partnership Units

Limited partners have the right to require the Operating Partnership to redeem part or all of their common units for cash based on the fair market value of an equivalent number of shares of the General Partner’s common stock at the time of redemption. Alternatively, the General Partner may elect to acquire those common units in exchange for shares of the General Partner’s common stock on a one-for-one basis, subject to adjustment in the event of stock splits, stock dividends, issuance of stock rights, specified extraordinary distributions and similar events. Pursuant to authoritative accounting guidance, the Operating Partnership evaluated whether it controls the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the share settlement of the limited partners’ common units and the vested incentive units. Based on the results of this analysis, the Operating Partnership concluded that the common and vested incentive Operating Partnership units met the criteria to be classified within capital.

The redemption value of the limited partners’ common units and the vested incentive units was approximately $290.1 million and $291.5 million based on the closing market price of Digital Realty Trust, Inc.’s common stock on September 30, 2012 and December 31, 2011, respectively.

(d) Distributions

All distributions on our units are at the discretion of Digital Realty Trust, Inc.’s board of directors. As of September 30, 2012, the Operating Partnership declared and paid the following distributions (in thousands):

Date distribution declared	Distribution payable date	Series C Preferred Units (1)(6)	Series D Preferred Units (2)	Series E Preferred Units (3)	Series F Preferred Units (4)		Common Units (5)
February 14, 2012	Mar. 30, 2012	$             1,402	$            2,398	$           5,031	$                  -		$        81,917
April 23, 2012	June 29, 2012	-	2,394	5,031	2,888	(7)	83,982
July 19, 2012	Sept. 28, 2012	-	1,723	5,031	3,023		93,076
		$             1,402	$            6,515	$         15,093	$           5,911		$      258,975

(1) $1.094 annual rate of distribution per unit.

(2) $1.375 annual rate of distribution per unit.

(3) $1.750 annual rate of distribution per unit.

(4) $1.656 annual rate of distribution per unit.

(5) $2.920 annual rate of distribution per unit.

(6) Effective April 17, 2012, in connection with the conversion of the series C preferred stock by Digital Realty Trust, Inc., all of the outstanding 4.375% series C cumulative convertible preferred units, or the series C preferred units, were converted into common units in accordance with the terms of the series C preferred units. Each series C preferred unit was converted into 0.5480 common unit of the Operating Partnership.

(7) Represents a pro rata distribution from and including the original issue date to and including June 30, 2012.

(e) Accumulated Other Comprehensive Loss

The accumulated balances for each classification of other comprehensive loss as of September 30, 2012 are as follows (in thousands):

	Foreign currency translation adjustments	Cash flow hedge adjustments	Accumulated other comprehensive loss
Balance as of December 31, 2011	$               (52,704)	$                 (7,363)	$               (60,067)
Net current period change	36,286	(6,796)	29,490
Reclassification to interest expense from interest rate swaps	-	2,964	2,964
Balance as of September 30, 2012	$               (16,418)	$               (11,195)	$               (27,613)

(f) Noncontrolling Interests in Consolidated Joint Ventures

On May 4, 2012, we acquired all of the noncontrolling ownership interest in the entity that owns 2805 Lafayette Street from our joint venture partner for approximately $12.4 million (subject to adjustment in limited circumstances). Concurrent with the acquisition, we repaid the secured debt on the property. The acquisition and debt repayment were financed with borrowings under our global revolving credit facility. The amount paid in excess of the carrying value of the noncontrolling ownership interest resulted in a decrease to general partner common capital as presented in the accompanying condensed consolidated statement of capital.