Microsoft Assumes Savvis Leases at Two Digital Realty Trust Datacenter Facilities in Santa Clara

July 3, 2007; 02:09 AM

San Francisco – Digital Realty Trust, Inc. (NYSE: DLR), a leading owner and manager of corporate datacenters and Internet gateways, announces that Microsoft Corporation (Nasdaq: MSFT) has assumed leases from SAVVIS, Inc. at two adjacent Digital Realty Trust datacenter facilities in Santa Clara. The leases, which expire at the end of 2010, total 300,000 rentable square feet, including approximately 160,000 square feet of raised floor datacenter space.

"We are very pleased to welcome Microsoft as a direct tenant at these two Santa Clara facilities and look forward to continuing to build our relationship with them," commented Michael Foust, Chief Executive Officer of Digital Realty Trust.

"These new lease structures are an important part of our vision for a globally scaled datacenter infrastructure that will keep pace with user demand for innovative online services. Leasing the space directly from Digital Realty Trust will allow us to gain energy and operational efficiencies, helping us continue to run some of the largest services in the world," said Arne Josefsberg, general manager, infrastructure services, Microsoft. "We appreciate Digital Realty Trust's commitment to and focus on technology infrastructure properties and look forward to working with them in future."

About Digital Realty Trust, Inc.

Digital Realty Trust, Inc. owns, acquires, repositions and manages technology-related real estate. Digital Realty Trust's 62 properties, excluding one property held 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 11.4 million rentable square feet, including 1.7 million square feet of space held for redevelopment, Digital Realty Trust's portfolio is located in 25 markets throughout North America and Europe. For additional information, please visit the Digital Realty Trust's website at http://www.digitalrealtytrust.com.