Dumping DFSMShsm-owned volumes

DFSMShsm-owned DASD backup and migration level 2 volumes are not automatically dumped. You must issue a DFSMShsm BACKVOL command for each migration level 2 volume you want to dump. The activity against the volumes should be at an absolute minimum while they are being dumped. The volumes do not have any internal DFSMShsm serialization performed for them to prevent migration copies or backup versions from being created on them while they are being dumped, so it is imperative to dump these volumes when no migration or backups are being done at the same time. Also, no VTOC copy data sets are created for DFSMShsm-owned volumes regardless of the VTOCCOPIES subparameter of the target dump classes.