Mount/Dismount Magazine Option

Use this function to load or remove a magazine from the library. Mounting a magazine initiates an inventory of the slots in the magazine. Dismounting a magazine returns all media to their home slots and prepares the magazine for removal. The time this process takes varies according to the number of media in the magazine you are mounting or dismounting.

Note: Magazines must be mounted for library operations to commence. Magazines should be dismounted before you physically remove them.

More information:

Mount or Dismount a Magazine