Iron Mountain Incorporated Schedules Third Quarter Earnings Release and Conference Call

October 22, 2003

BOSTON, MA - Iron Mountain Incorporated (NYSE:IRM), the leader in records and information management services, today announced that its press announcement of the third quarter 2003 results is scheduled to be released before market hours on Wednesday, October 29, 2003. A conference call has been scheduled to discuss the third quarter results and a taped replay of the conference call will be available shortly after the end of the call. Call and replay information are as follows:

Call Date: Wednesday, October 29, 2003
Call Time: 11:00 A.M. (Eastern Time)
Call Hosts: Richard Reese, Chief Executive Officer; John Kenny, Chief Financial Officer

Domestic Call Dial In: (800) 901-5241
International Call Dial In: (617) 786-2963
Access Code: 61520868

Online Info: www.ironmountain.com at the Investor Relations page
Live Simulcast (listen only) available during the call.

Replay available one hour after the conclusion of the call until November 5, 2003.

Replay Domestic Dial In: (888) 286-8010
Replay International Dial In: (617) 801-6888
Replay Access Code: 93633797

Contact: