When you try to delete a tape on the NetBackup administration console, the NetBackup prompts that assigned media cannot be deleted.
Step 1 Run a command in the following format to make tapes expire.
$NBU installation directory $/bin/admincmd/bpexpdate -m 000014 -d 0 –froce
Step 2 Delete tapes on the NetBackup administration console.
The media has been allocated by the NetBackup to a client for backup and its status is changed from available to assigned. If the backup data that does not expire exists after the backup operation is performed, the tape cannot be deleted.