Press Release

SAN FRANCISCO, Sept. 2 /PRNewswire-FirstCall/ -- Digital Realty Trust, Inc. (NYSE: DLR), the leading owner and manager of corporate and Internet gateway datacenters, has signed an exclusive agreement with Foster Fuels to provide customers with dependable emergency fuel delivery for power generators at any of Digital Realty Trust's U.S. Turn-Key Datacenter(TM) facilities. This value-added service is unique in the datacenter industry and ensures that Digital Realty Trust customers can maintain their datacenter operations even during prolonged utility outages caused by events such as natural disasters.

Foster Fuels (http://www.emergencyfuelservice.com), in business since 1921, is one of the leading emergency fuel delivery companies in the United States, with nationwide operations capable of rapidly providing fuel support to each of the markets where Digital Realty Trust's domestic properties are located. Through this agreement, Digital Realty Trust customers at any of the company's U.S. Turn-Key Datacenter(TM) facilities will be able to obtain emergency fuel emergency fuel within 24 hours. Both companies are also exploring the possibility of making this available to customers at all Digital Realty Trust U.S. facilities in the near future. Through this agreement, Digital Realty Trust and its customers can also arrange for pre-staging of generator fuel to support uninterrupted fuel delivery even in disaster situations with complex logistics.

"Digital Realty Trust's facilities house critical operations for our customers and this agreement with Foster Fuels ensures that customers can stay up and running on generator power even during prolonged utility power outages," said Ted Martin, Vice President of Technical Operations at Digital Realty Trust. "Foster Fuels has built a very strong reputation for its emergency fuel oil services and it has the resources, operations and protocols to support the specific needs of datacenter customers. We have worked with Foster Fuels to supply our own fuel oil needs, and now this service is available to our customers to support their disaster operations plans. We are proud to be the first company in the datacenter industry to offer this kind of service."

"Emergency fuel service is an area we specialize in and we have the contracts, relationships and dedicated equipment to get fuel to our customers when they need it. In addition to serving Digital Realty Trust and its customers, we are the prime contractor responsible for providing ground fuel support during National Declared Emergencies in support of Department of Homeland Security / FEMA. We have long term relationships with major oil companies around the country that provide availability of fuel supply from a variety of sources and locations. We also have dedicated equipment, trucks and staff solely for our emergency fuel service," said Watt R. Foster Jr., President of Foster Fuels. "If anybody can make it happen during an emergency, Foster Fuels can."

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 Datacenter(TM) and Powered Base Building(TM) 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. 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 datacenter tenants. Comprising approximately 12.9 million rentable square feet as of August 6, 2008, including 1.9 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 http://www.digitalrealtytrust.com.

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, including statements related to the Company's ability to obtain or Foster Fuels' ability to deliver emergency fuel supplies. These risks and uncertainties include adverse economic or real estate developments in the Company's markets or the technology industry; general economic conditions or recession; construction and development delays, termination of leases by tenants; increased interest rates and operating costs; inability to manage domestic; failure to obtain necessary outside financing; decreased rental rates or increased vacancy rates; difficulties in identifying properties to acquire and completing acquisitions at acceptable return levels; failure to successfully operate acquired properties and operations; failure of acquired properties to perform as expected; failure to successfully redevelop properties acquired for such purposes or unexpected costs related thereto; failure to maintain the Company's status as a REIT; environmental uncertainties and risks related to natural disasters; financial market fluctuations; changes in foreign currency exchange rates; risks of operating in foreign markets; and 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, or SEC, including the Company's annual report on Form 10-K for the year ended December 31, 2007 and the Company's quarterly reports on Form 10-Q for the quarters ended March 31, 2008 and June 30, 2008. 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.