During primary space management for non-SMS-managed volumes, DFSMShsm
processes the volume according to the one technique specified by the
ADDVOL command for the volume. Thus, all the eligible data sets on
the volume are managed to the same inactive age and by the same management
technique. The available techniques are:
- Delete by age (deletion)
- Delete if backed up (retirement)
- Migration (with or without thresholds of occupancy)