Iron Mountain Expands in Colorado

through Acquisition Purchase of DocuVault Strengthens Iron Mountain's Area Foothold in Records Management and Document Shredding

BOSTON and DENVER (May 12, 2008) - Iron Mountain Incorporated (NYSE: IRM), the global leader in information protection and storage services, today announced it acquired the DocuVault companies, a Denver-based records management and information destruction business that provides records storage, secure shredding and data backup services. The move bolsters Iron Mountain's existing presence in Denver and Colorado Springs. Financial terms of the deal were not disclosed.

"Buying a strong local-market performer like DocuVault improves our leadership position in a particular region and our ability to serve companies there," said John Kenny, Iron Mountain's executive vice president of corporate development. "We view acquisitions as an important component of our overall growth strategy, and we will continue to seek out opportunities that enhance existing operations or expand our geographical footprint and service portfolio."

In DocuVault, Iron Mountain acquires the largest privately owned records management and information destruction company in Colorado and one that Inc. magazine named among the fastest-growing, inner-city businesses in the country for five consecutive years since 2004. Iron Mountain also gains two records storage facilities and a secure shredding plant, increasing the company's capacity for storing and destroying records in Colorado.

About Iron Mountain
Iron Mountain Incorporated (NYSE:IRM) helps organizations around the world reduce the costs and risks associated with information protection and storage. The Company offers comprehensive records management and data protection solutions, along with the expertise and experience to address complex information challenges such as rising storage costs, litigation, regulatory compliance and disaster recovery. Founded in 1951, Iron Mountain is a trusted partner to more than 100,000 corporate clients throughout North America, Europe, Latin America and Asia Pacific. For more information, visit the Company's Web site at www.ironmountain.com.

Forward Looking Statements

This press release may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and federal securities laws, and is subject to the safe-harbor created by such Act. Forward-looking statements include the statement that we will continue to seek acquisition opportunities. This statement involves known and unknown risks, uncertainties and other factors that may cause the actual results to be materially different from those contemplated in the forward-looking statement. These factors include, but are not limited to: (i) Iron Mountain's ability or inability to complete acquisitions on satisfactory terms and to integrate acquired companies efficiently; and (ii) other risks described more fully in Iron Mountain's most recently filed Annual Report on Form 10-K under "Item 1A. Risk Factors". Except as required by law, Iron Mountain undertakes no obligation to release publicly the result of any revision to these forward-looking statements that may be made to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events.