EXHIBIT 99.2

CONSENT

Forrester Research, Inc. hereby consents to the use by Digital Realty Trust, Inc. in its Form S-11 Filing, of the Forrester material set forth on the attached Exhibit A.

Forrester Research, Inc.

/s/ Stephen M. Davidson

Director, Forrester Consulting

617-613-6351

EXHIBIT A

According to Forrester Research, Inc., a leading technology research firm, between 1996 and 2000, technology expenditures in the U.S. grew from $397.3 billion to $709.8 billion, representing a 15.6% annualized growth rate, which was more than double the growth rate of the overall economy over the same period, as measured by GDP.⁽¹⁾

U.S. technology spending has now stabilized and, according to Forrester Research, Inc., is expected to increase by 6.9% annually from $763.1 billion in 2004 to $995.5 billion in 2008.⁽¹⁾

Fueled by these positive trends, U.S. IT services spending reached $369.4 billion in 2003 and is expected to increase 4.3% in 2004 to approximately $385.3 billion, according to Forrester Research, Inc.⁽²⁾ Forrester Research, Inc. also expects U.S. IT services spending to grow 4.6% annually through 2008.⁽¹⁾

(1) IT Spending Outlook: 2004 - 2008 and Beyond, Forrester Research, Inc., July 2004

(2) Projected 2004 US IT Growth Edges Up To 6%, Forrester Research, Inc., June 2004