The main server we had when I first started working here (about 7 and a half years ago) had a tape-backup drive. Eventually that server was replaced by a new server, one that didn't have a tape-backup drive.
However, the old backups were still floating around. Stephen here at work wanted to throw them out, but Petey (the IT manager) wouldn't let him, so he wrapped them all together and labelled them, and left them on the shelf in Petey's room. They've been there ever since.