ServeCentric Signs Turn-Key Datacentre(SM) Lease Agreement With Digital Realty Trust

DUBLIN - Digital Realty Trust, Inc. (NYSE: DLR), the world’s largest wholesale datacentre provider, has completed a Turn-Key Datacentre(SM) lease agreement with ServeCentric (www.servecentric.com), Ireland’s leading managed services and data centre operator. Under this agreement, ServeCentric will expand its footprint in Digital Realty Trust’s property in Dublin.

“Digital Realty Trust’s Turn-Key Datacentres(SM) enable managed services companies like ServeCentric to respond rapidly to their customers’ needs with an ideal datacentre environment to support their mission critical applications. Our Turn-Key Datacentres(SM) significantly reduce the amount of time required to bring a new datacentre online, from months or years to only weeks. That is a tremendous competitive advantage to datacentre operators and hosting companies that are seeing strong demand for their services,” said Brent Behrman, Vice President of Digital Realty Trust.

Digital Realty Trust Turn-Key Datacentre(SM) facilities provide state-of-the-art environments for supporting mission critical infrastructure, with advanced cooling, power, redundancy, and sustainability features to ensure that critical applications are available while optimising energy efficiency. Digital Realty Trust’s Turn-Key Datacentres(SM) are scalable from hundreds of kilowatts of IT load to megawatts of IT load and are located in markets throughout North America and Europe. Each Turn-Key Datacentre(SM) facility is physically secure and features a state-of-the-art power and cooling architecture that has been optimised for green operation. Every Turn-Key Datacentre(SM) is built using the company’s proprietary POD Architecture(SM) and uses metered power to ensure that clients pay only for the power that they use.

About Digital Realty Trust, Inc.

Digital Realty Trust, Inc. owns, acquires, redevelops, develops and manages technology-related real estate. The Company is focused on providing Turn-Key Datacentre(SM) and Powered Base Building(SM) datacentre solutions for domestic and international tenants across a variety of industry verticals ranging from information technology and internet enterprises, to manufacturing and financial services. Digital Realty Trust’s 74 properties, excluding one property held as an investment in an unconsolidated joint venture, contain applications and operations critical to the day-to-day operations of technology industry tenants and corporate enterprise datacentre tenants. Comprising approximately 1.2 million rentable square metres (12.9 million rentable square feet) as of November 5, 2008, including 150,000 square metres (1.6 million square feet) of space held for redevelopment, Digital Realty Trust’s portfolio is located in 27 markets throughout North America and Europe. For additional information, please visit Digital Realty Trust’s website at www.digitalrealtytrust.com.

About ServeCentric

ServeCentric is a wholly owned, private funded, Irish organisation. It was established in August 2002 and has its headquarters in Blanchardstown Corporate Park in Dublin. It is currently Ireland’s leading managed services and data centre operator and provides high-quality, scaleable solutions from single cabinet collocation services to full-scale provision of managed services.

Safe Harbor Statement

This press release contains forward-looking statements which are based on current expectations, forecasts and assumptions that involve risks and uncertainties that could cause actual outcomes and results to differ materially. These risks and uncertainties include the impact of the current deterioration in the global economy, including the turmoil in the financial and credit markets; the downturn of 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; decreases in real estate valuations and resulting impairment charges; our dependence upon significant tenants; bankruptcy or insolvency of one or more major tenants 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 for refinancing current debt obligations, undertaking or completing redevelopment, completing acquisitions or other purposes; increased interest rates and operating costs; our failure to repay debt when due or our breach of covenants or other terms contained in our loan documents; financial market fluctuations; changes in foreign currency exchange rates; our ability to manage our growth effectively; difficulty acquiring or operating properties in foreign jurisdictions; our failure to successfully operate acquired or redeveloped properties; risks related to joint venture investments, including as a result of our lack of control of certain of these 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; inability to successfully redevelop 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 public companies; our failure to maintain our 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; changes in foreign laws and regulations, including those related to taxation and real estate ownership and operation; changes in real estate and zoning laws; and increases in real property tax rates. For a further list and description of such risks and uncertainties, see the reports and other filings by the Company with the United States Securities and Exchange Commission, including the Company’s annual report on Form 10-K for the year ended December 31, 2008 and the Company’s quarterly reports on Form 10-Q for the quarter ended March 31, 2009. The Company disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

For Additional Information: A. William Stein Pamela A. Matthews Chief Financial Officer and Investor/Analyst Information Chief Investment Officer Digital Realty Trust, Inc. Digital Realty Trust, Inc. +1-415-738-6500 +1-415-738-6500 Chris Crosby Sales & Technical Services Digital Realty Trust, Inc. +1-214-231-1350

Source: Digital Realty Trust, Inc.

Chris Crosby, Sales & Technical Services, +1-214-231-1350, or A. William Stein, Chief Financial Officer and Chief Investment Officer, or Pamela A. Matthews, Investor/Analyst Information, all of Digital Realty Trust, Inc., +1-415-738-6500