Release Details

SAN FRANCISCO, Dec. 17 /PRNewswire-FirstCall/ -- Digital Realty Trust, Inc. (NYSE: DLR), a leading owner and manager of corporate datacenters and Internet gateways, will host a series of upcoming seminars that will provide datacenter professionals with practical information about best practices for datacenter cooling. The seminars will feature three of the industry's most respected experts in datacenter operations and efficiency:

    --  Robert "Dr. Bob" F. Sullivan, PhD., the Uptime Institute's highly
        respected datacenter cooling expert who originated the concept of
        hot-aisle-cold-aisle datacenter design;
    --  Dr. Amir Radmehr, a widely respected and extensively published
        datacenter cooling expert from Innovative Research, Inc; and
    --  Jim Smith, Vice President, Engineering at Digital Realty Trust, who is
        recognized as one of the foremost authorities in efficient datacenter
        operations and green datacenter design.

The two-day seminars will be held in the following five cities in the United States and Europe during Q1 and Q2 2008:

    --  Dallas -- January 29-30, 2008
    --  San Francisco -- February 26-27, 2008
    --  Dublin -- April 16-17, 2008
    --  New York City -- May 21-22, 2008
    --  Chicago -- June 18-19, 2008

"Each seminar will contain a tremendous amount of practical information. In this fast-paced program, attendees will learn about optimizing datacenter cooling, giving them critical information and best practices to immediately improve operations and save money," said Jim Smith. "We are very proud to have 'Dr. Bob' and Dr. Radmehr on the program. Dr. Bob's portion of the seminar will provide attendees with valuable guidance for high density cooling. Dr. Radmehr and I will focus our joint presentation on how to use airflow modeling to optimize datacenter design. We are very pleased to be able to offer this class in datacenter cooling to our customers."

Dr. Sullivan commented, "These seminars will provide the opportunity for any person involved in datacenter operations to become educated on a critical topic: best practices for efficient and effective cooling. Amir, Jim and I have designed the content to focus on truly practical advice and action items that people will be able to apply in their datacenter the day after they complete the seminar -- making a measurable difference in their datacenter performance and their company's bottom line."

"One of the valuable outcomes of these seminars is the scientific knowledge attendees gain to examine the cooling practices used in their data centers. They also learn very simple yet effective techniques that can be readily used to improve the cooling of their data centers," said Dr. Radmehr.

For more information about the seminars and to register to attend, visit http://www.digitalrealtytrust.com.

About the Uptime Institute

Since 1993, the Uptime Institute, Inc. (Institute) has been a respected provider of educational and consulting services for Facilities and Information Technology organizations interested in maximizing data center uptime. The Institute has pioneered numerous industry innovations, such as the Tier Classifications for data center availability, which serve as industry standards today. For more information about the Uptime Institute, visit http://www.uptimeinstitute.org.

About Innovative Research, Inc.

Innovative Research, Inc. provides quality software packages and consulting services for fluid flow, heat transfer, combustion, turbulence and related processes. Among their product line is TileFlow, a simulation tool for airflow and temperature distribution (cooling performance) in data centers. For more information, visit http://www.inres.com.

About Digital Realty Trust, Inc.

Digital Realty Trust, Inc. owns, acquires, repositions 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 66 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 12.0 million rentable square feet, including 1.7 million square feet of space held for redevelopment, Digital Realty Trust's portfolio is located in 26 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. These risks and uncertainties include adverse economic or real estate developments in the Company's markets or the technology industry; general economic conditions; defaults on or non-renewal of leases by tenants; increased interest rates and operating costs; inability to manage domestic and international growth effectively; 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, 2006, as updated by subsequent reports on Form 10-Q and Form 8-K filed with the SEC. 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
     Chief Financial Officer and Chief Investment Officer
     Digital Realty Trust, Inc.
     (415) 738-6500

     Pamela A. Matthews
     Investor/Analyst Information
     Digital Realty Trust, Inc.
     (415) 738-6500

     Chris Crosby
     Sales & Technical Operations
     Digital Realty Trust, Inc.
     (214) 231-1350

SOURCE Digital Realty Trust, Inc.