All media require labels. Labeling media with an automated library requires you to check media into the library. Checkin processing can be done at the same time that the volume is labeled.
To label volumes with the LABEL LIBVOLUME command, specify the CHECKIN parameter.
To automatically label tape volumes in SCSI-type libraries, use the AUTOLABEL parameter on the DEFINE LIBRARY and UPDATE LIBRARY commands. Using this parameter eliminates the need to pre-label a set of tapes. It is also more efficient than using the LABEL LIBVOLUME command, which requires you to mount volumes separately. If you use the AUTOLABEL parameter, you must check in tapes by specifying CHECKLABEL=BARCODE on the CHECKIN LIBVOLUME command.
A label cannot include embedded blanks or periods and must be valid when used as a file name on the media.