Using the DFSMSdss COPY command, you can perform data set, volume, and track movement. The COPY command with DELETE causes DFSMSdss to delete the source data set after it successfully copies the data set.

The full-volume COPY command is useful for moving data between like devices. If you are moving volumes to like devices of larger capacity, generally you need a larger VTOC because the larger device can hold more data sets. DFSMSdss rebuilds indexed VTOCs and recognizes larger VTOCs on target volumes (as long as the target VTOC is outside the range of the source volume) when the VTOCs are moved to a like device of larger capacity.

For moving data between unlike devices, you must use the logical data set COPY command for all the data sets on the volume. DFSMSdss fills the tracks as completely as possible instead of just copying track for track. In addition, if the reblockable indicator is set on, the data set is reblocked to a system-determined block size efficient for the device.