Iron Mountain Inc. reported fourth-quarter FY21 revenue growth of 9 percent year-on-year to $1.16 billion, beating the consensus of $1.15 billion. Storage Rental Revenue grew 4 percent Y/Y to $725 million. Service Revenue rose 20 percent Y/Y to $434 million. The adjusted EBITDA margin expanded 180 bps to 37.1 percent. Adjusted EPS of $0.43 beat the…