EXHIBIT 23.2 Consent of Independent Public Accountants As independent public accountants, we hereby consent to the incorporation of our reports, dated February 22, 2000, on Pierce Leahy Corp.'s, a Pennsylvania corporation, financial statements included in this Form 10-K, into Iron Mountain Incorporated's, a Pennsylvania corporation, previously filed registration statements on Forms S-3 (File Nos. 333-91577 and 333-72191) and S-8 (File Nos. 333-43787, 333-69859 and 333-95901). /s/ Arthur Andersen LLP Arthur Andersen LLP Philadelphia, Pennsylvania March 27, 2000