DUBLIN, Ireland and LONDON, November 12 /PRNewswire/ --

- New Energy Efficient Datacentre to Provide Mission Critical IT Infrastructure to eircom

Digital Realty Trust, Inc. (NYSE: DLR), the leading owner and manager of corporate and Internet gateway datacentres, announced today the signing of a major lease with eircom, Ireland's largest telecommunications supplier, in the third quarter of 2008 for a new ground up development project totaling approximately 11,500 metres squared (124,500 square feet) in Clonshaugh in Dublin, Ireland. This build-to-suit Datacentre is an example of Digital Realty Trust's industry leadership in advancing energy efficiency and reducing the environmental impact of datacentre facilities. Through its utilisation of energy efficient design elements and operational processes, this new facility in Clonshaugh establishes a new standard for best practices for green datacentres in Europe.

Commenting on the announcement, Cathal Magee, Managing Director, eircom retail, said, Business has changed: customers today are far more reliant on their IT systems and their company network to perform vital functions. Plus, the ICT skills shortage continues to be challenging. The new eircom managed services datacentre tackles both these realities at once -- customers get the ideal environment for their critical systems, as well as access to high-value technical specialists who are skilled at managing the hardware and software that businesses require.

To stay competitive in the knowledge economy, Ireland absolutely must have facilities like these that redefine the state-of-the-art for hosting and managed services and provide the capacity for expansion that businesses demand. This new centre builds on eircom's long track record of providing market-leading solutions in this key area, and is in line with our ongoing commitment to invest in innovation for the benefit of our customers.

Given today's challenging economic climate, and the need to focus on core business activity the Irish market is seeing an expanding demand for datacentre space and associated support. Our energy efficient design makes the eircom facility a preferred infrastructure solution for managed services and hosting customers, said Bernard Geoghegan, Senior Vice President Europe of Digital Realty Trust.

Digital Realty Trust has built custom datacentres for numerous global companies, including telecommunications and financial services companies that have very specific, complex datacentre requirements for the high-volume, low-latency computing systems. Digital Realty Trust manages all build-to-suit datacentre projects using its proprietary Gating Process(TM) which ensures delivery of custom datacentre projects through the timely, efficient coordination of all processes involved in design and construction while optimising costs. Unlike traditional development methods for build-to-suit projects, Digital Realty Trust's Gating Process(TM) provides customers with transparency and inputs at key stages of the project -- from scope and schematic through commissioning and completion -- ensuring that the finished datacentre facility supports the unique needs of each organisation.

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(TM) and Powered Base Building(TM) 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 and corporate enterprise datacentre tenants. Comprising approximately 12.9 million rentable square feet as of November 5, 2008, including 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, including statements related to demand for datacentres in the Irish market. These risks and uncertainties include adverse economic or real estate developments in the Company's markets, including Ireland, or the technology industry; general economic slow-downs or recessions; construction and development delays, difficulties in or inability to lease space, failure to commence rental payments on time under signed leases; tenant bankruptcies; defaults under leases by tenants; 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 and completing acquisitions at all or at acceptable return levels; failure to successfully operate acquired properties and operations; failure of acquired properties to perform as expected; reductions in property values; 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.

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

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