The data set backup by command function provides the following
capabilities:
- Up to 64 data sets per host can be backed up at one time.
- Data sets can be backed up directly to DASD or to tape.
- If concurrent copy is specified, users are notified when the data
set backup is either logically or physically complete. In addition,
concurrent copy supports non-SMS data sets, or if specified on the
command, concurrent copy overrides the management class for an SMS
data set.
- Users can demount continuously mounted backup tapes.
- Users can tailor the times when DFSMShsm demounts a tape.
- Users can specify the number of days to retain a specific backup
copy of a data set. See Specifying the number of days to retain a backup copy of a data set.
- Users can create a data set backup copy and store it under a different,
specified data set name. See Data set backup using NEWNAME.
Because the data set backup function allows users to target their
backups directly to tape, this can possibly increase the number of
required tape drives and mounts. The SETSYS DSBACKUP and the HOLD
BACKUP(DSCOMMAND) commands manage the task levels of both tape and
ML1 DASD.