Exhibit 23.2

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Post-Effective Amendment No. 1 to Registration Statement No. 333-120395 on Form S-8 of our reports dated March 11, 2005, relating to the financial statements of Iron Mountain Incorporated and to the effectiveness of internal control over financial reporting, appearing in the Annual Report on Form 10-K of Iron Mountain Incorporated for the year ended December 31, 2004.

/s/ DELOITTE & TOUCHE LLP

Boston, Massachusetts

May 27, 2005