All supported DFSMS/MVS and z/OS® releases provide concurrent copy support. Concurrent
copy requires the following components:
- DFSMSdfp for the system data mover (SDM), new management and storage
class attributes, and ISMF support of those attributes
- DFSMSdss for the external interface to concurrent copy
- DFSMShsm to call concurrent copy during backup operations.
SMS is not necessary in order to use concurrent copy. You can use
concurrent copy directly from DFSMSdss without SMS. However, DFSMShsm
supports concurrent copy during automatic and aggregate backup only
when SMS is active.