Unable to Inventory the slots.
support.arcserve.com › s › articleOct 10, 2021 · All slots show as dismounted. If you look at the tape.log you may see Errors like, Unable to move tape from slot, E8015 Critical Error, no free slot available. Solution: You need to make sure that the Tape Library Door is properly closed and the free slots are available. Stop the Tape Engine Empty few of the slots from the Tape Library
KB1842: Tape library and drives are shown as separate devices
https://www.veeam.com/kb184205.12.2013 · Line 2: Connect to the Tape Server where the Tape Library and Drives are attached. Open an Administrative Command Prompt. Change directory to a temporary folder (e.g., cd C:\Temp\) Run the following command to dump information from the Veeam Tape Service. The command will complete silently, leaving in the folder a file named "dumpinformation.xml".
Tape library - Wikipedia
https://en.wikipedia.org/wiki/Tape_libraryIn computer storage, a tape library, sometimes called a tape silo, tape robot or tape jukebox, is a storage device that contains one or more tape drives, a number of slots to hold tape cartridges, a barcode reader to identify tape cartridges and an automated method for loading tapes (a robot). Additionally, the area where tapes that are NOT currently in a silo are stored is also called a …