DUBLIN and LONDON, February 23 /PRNewswire/ --

Digital Realty Trust, Inc. (NYSE: DLR), the world's largest wholesale datacentre provider, has completed a Turn-Key Datacentre(SM) lease agreement with Tata Communications, a provider of a new world of communications and the global telecommunications arm of the US$62.5 billion Tata Group, one of India's oldest, largest and most respected business conglomerates. As per the agreement, Tata Communications will establish a new datacentre at a Digital Realty Trust facility in the UK to support its global IT infrastructure.

We are pleased that Tata Communications has chosen to work with Digital Realty Trust on the establishment of this new datacenter, said Bernard Geoghegan, Senior Vice President at Digital Realty Trust, who oversees International Operations. This new contract affirms that we offer real value to our customers.

We are pleased to partner with Digital Realty Trust as we execute our global managed services expansion strategy. This partnership allows us to significantly enhance our position as a data centre services provider within the UK and European market, and provides us with the ability to meet the current and future services needs of our customers in this market, said Abid Qadiri, Vice President, Data Centre Services for Tata Communications.

Mr. Geoghegan added, Because we build more datacentres than anyone else in the world, companies that select us as their datacentre partner benefit from our unmatched experience, economies of scale and financial stability. With Digital Realty Trust's Turn-Key Datacentre(SM), Tata Communications is able to utilize the facilities within weeks of signing the lease agreement, far ahead of the normal industry standards.

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 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 75 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 1.2 million square metres (13.0 million square feet) as of December 31, 2008, including approximately 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 Europe and North America. 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. These risks and uncertainties include adverse economic or real estate developments in the Company's markets, including in the UK and Europe; general economic slow-downs or recessions; reductions in information technology spending; difficulties in or inability to lease space, including redeveloped space; construction and development delays; increased development costs; tenant bankruptcies or defaults under leases by tenants; failure to commence rental payments on time under signed leases; increased interest rates; increased operating costs; failure to obtain necessary outside financing; decreased rental rates or increased vacancy rates; difficulties in identifying properties to acquire; completing acquisitions at all or at acceptable return levels; failure to successfully operate properties; failure of existing, acquired or redeveloped properties to perform as expected; reductions in property values; 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, 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, June 30, 2008 and September 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.

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 Bernard Geoghegan Fred Potter Senior Vice President Managing Director International Operations International Finance Digital Realty Trust, Inc. Digital Realty Trust, Inc. +353(1)2450650 +44(0)20-7954-9134

A. William Stein, Chief Financial Officer and Chief Investment Officer, +1-415-738-6500, or Pamela A. Matthews, Investor/Analyst Information, +1-415-738-6500, or Bernard Geoghegan, Senior Vice President International Operations, +353-(1)-2450650, or Fred Potter, Managing Director International Finance, +44(0)20-7954-9134, all of Digital Realty Trust, Inc.