If no output volume is specified for the restore operation, the default volume type is assumed, i.e. the same type as the input volume:
Files which were saved from a public disk are restored to a public disk.
Files which were saved from private volumes are restored to the same private volumes (same VSNs).
If files are written back to a volume other than the original one, you must specify the VSN of the new volume in the TO operand of the FILES statement.
When restoring multivolume files on disks of different types, you must reserve storage space with the /CREATE-FILE command and execute the restore operation with the SPACE=KEEP operand.
Files can be renamed.
In the case of catalog entries saved with CATONLY=YES, only the catalog ID may be renamed.
When an entire file is restored, it is assigned a new internal file name (CFID). Such files are not saved in a new save run with CHANGED=YES if they were previously restored from the last save version.