What Does Tape Library Mean?

A tape library is a storage system that contains multiple tape drives, some bays or slots to hold tapes, a scanner of some kind such as a barcode reader or an RF scanner, and a robotic system that automates the loading and changing of tapes. It is essentially a collection of tapes and tape drives that store information, usually for backup.

Techopedia Explains Tape Library

A tape library is a high-capacity storage system used for storing, retrieving, reading from and writing to tape cartridges. A tape library contains racks of cartridges and multiple tape drives with a robotic system used for automatically changing tape cartridges. A filing system that uses a barcode reader or an RF scanner allows the tape library to find the correct tape to load either for writing or for reading.