Explanation: SKIPABPRIMARY | NOSKIPABPRIMARY are
mutually exclusive, optional parameters specifying whether or not
to back up data sets on DFSMShsm-managed volumes with:
- The primary volume attribute of automatic backup, specified with
the PRIMARY(AUTOBACKUP) parameter of the ADDVOL command
- The storage group attribute for automatic backup, specified with
the AUTOBACKUP=YES for the storage group.
SKIPABPRIMARY specifies that during automatic backup, DFSMShsm
skips the backup of DFSMShsm-managed volumes with:
- The primary volume attribute of automatic backup
- The storage group attribute of AUTOBACKUP=YES
Therefore, all users must back up their data sets on the DFSMShsm-managed
volumes. DFSMShsm, however, backs up data sets while the data sets
are on migration volumes that migrated from a volume with the primary
volume attribute of automatic backup or from a storage group with
the attribute of AUTOBACKUP=YES.
NOSKIPABPRIMARY specifies that during automatic backup, DFSMShsm
backs up primary volumes with the automatic backup attribute and storage
groups with the attribute of AUTOBACKUP=YES.
SMS relationship: Parameter differs in meaning
when applied to SMS-managed or non-SMS-managed DASD volumes or data
sets.
SETSYS default: None.
DFSMShsm default: If you do not specify either
parameter on any SETSYS command, the DFSMShsm default is NOSKIPABPRIMARY.