Backups with Automatic Tape Loaders 
The Database Manager GUI supports automatic tape loaders. Alternatively, you can backup using an external backup tool (
Backing Up with External Backup Tools).If you want to use an automatic tape loader for
backups, select Extended when defining the medium (Defining a Single Backup Medium, Defining a Group of Parallel Backup Media or Changing Backup Media) and select the Autoloader option.After inserting the tape cartridge in the autoloader, the first tape must be selected manually.
When the end of this tape is reached, the autoloader will then take the next tape available.
For a backup to be successful, you will need to ensure an adequate supply of tapes.
At the end of the backup, the tape device shows the number of tapes written. The tapes should be marked with the
backup ID that was displayed and confirmed at the start of the backup.
Before a backup you must check that none of the tapes is write-protected because this will terminate the entire backup process.