Release Details

Digital Realty Trust Recognized for Green Datacenter Leadership in InfoWorld Green 15 Awards

May 19, 2009

Digital Realty Trust Wins Green IT Award from IDG for Second Consecutive Year

SAN FRANCISCO, May 19 /PRNewswire-FirstCall/ -- Digital Realty Trust, Inc. (NYSE: DLR), the world's largest wholesale datacenter provider, announced today that IDG's InfoWorld, the leading integrated media brand for IT Decision Makers, has selected Digital Realty Trust for InfoWorld's Green 15 Awards 2009. Digital Realty Trust received the award in recognition for achieving the datacenter industry's first BREEAM "Excellent" rating for energy efficiency and environmental sustainability. This honor is part of InfoWorld's annual Green 15 special feature published in April on InfoWorld.com. Digital Realty Trust has won this prestigious green IT award for two consecutive years.

The InfoWorld Green 15 awards recognize the 15 most innovative IT initiatives that advance the cause of green IT by successfully boosting energy efficiency, trimming waste, and reducing or eliminating the use or the production of harmful substances.

"It is an honor to receive this recognition and to be in the company of so many other great organizations," said Jim Smith, CTO of Digital Realty Trust. "We are particularly proud of this first BREEAM 'Excellent' rating for a datacenter project because it resulted in more than just a highly energy efficient facility for our customer. It also led to the first BREEAM standard specifically designed for datacenters that will use energy and material inputs in a much smarter, greener manner. Like so many of the Green 15 companies, Digital Realty Trust is committed to helping other organizations adopt green best practices by sharing case studies, donating time and expertise to industry education, and participating in the establishment of industry standards."

"There is great work being done in so many areas of green IT, and Digital Realty Trust's work has focused one of the most critical areas for corporate green IT strategies: datacenter facilities. Facilities experts like Digital Realty Trust have been raising awareness about how much energy and money can be saved when you design, build and operate datacenter facilities with green best practices, and this BREEAM-certified project is a great example of that. Plus the project has produced a BREEAM standard specifically designed for datacenters that other organizations can use for their own facilities," said Ted Samson, Senior Analyst at InfoWorld.

Samson added: "This year's Green 15 winners demonstrate, once again, that green IT projects can be a win-win proposition. These organizations have not only helped the planet by reducing greenhouse gas emissions, preserving trees, and keeping e-waste out of landfills. They have also achieved measurable business benefits, such as significantly lower electricity bills, fewer hardware refreshes, and postponed datacenter-expansion projects -- along with gains in efficiency and productivity."

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 Datacenter(SM) and Powered Base Building(SM) 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 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 13.0 million square feet as of April 30, 2009, including 1.2 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.

About InfoWorld Media Group

InfoWorld Media Group helps IT Decision Makers choose the right technology, within the context of a cohesive strategy for business impact at their organizations. InfoWorld identifies and promotes emerging technology segments that add unique value for the organizations that implement them, as well as the vendors that provide those solutions. Using an integrated communications approach including online, events, research, and a continued investment in an independent Test Center, InfoWorld analysts and editors provide hands-on analysis and evaluation, as well as expert commentary on issues surrounding emerging technologies and products. Visit InfoWorld at http://www.infoworld.com.

About International Data Group

International Data Group (IDG) is the world's leading technology media, events, and research company. IDG's online network includes more than 450 web sites spanning business technology, consumer technology, digital entertainment and video games worldwide. IDG also publishes more than 300 magazines and newspapers in 85 countries. IDG's media brands include CIO, CSO, Computerworld, GamePro, InfoWorld, Macworld, Network World, and PC World. IDG's lead-generation service, IDG Connect, matches technology companies with an audience of engaged, high-quality IT professionals, influencers, and decision makers.

IDG is a leading producer of more than 750 technology-related events including Macworld Conference & Expo, LinuxWorld Conference & Expo, Entertainment for All Expo (E for All), DEMO, Storage Networking World, and IDC Directions. IDC, a subsidiary of IDG, is the premier global provider of market intelligence, advisory services, and events. Over 900 IDC analysts in more than 90 countries provide global, regional, and local expertise on technology and industry opportunities and trends.

Additional information about IDG, a privately held company, is available at http://www.idg.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 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    Chris Crosby
    Chief Financial Officer     Investor/Analyst      Sales &
    and Chief Investment        Information           Technical Services
    Officer                     Digital Realty        Digital Realty
    Digital Realty              Trust, Inc.           Trust, Inc.
    Trust, Inc.                 +1 415-738-6500       +1 214-231-1350
    +1 415-738-6500

SOURCE Digital Realty Trust, Inc.

Contact: 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 Chris Crosby, Sales & Technical Services, +1-214-231-1350, all of Digital Realty Trust, Inc.