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