Searching for eligible dump copies

If an HRECOVER command is not restricted to recovering from incremental backup volumes, or if a RECOVER command is not restricted from recovering backup versions or a specified dump volume, DFSMShsm must determine the volume from which the data set may have been dumped, in order to find an eligible dump copy. The following conditions narrow the search:

• If the data set is currently cataloged, DFSMShsm begins with the volume the data set is currently cataloged on as the original source volume. Dump copies of this volume are searched to try to find an eligible copy. If no eligible copy can be found, and this data set also has a valid DFSMShsm backup version, and if this backup version was created from a different volume from the one on which the data set is currently cataloged, the search continues with dump copies of the volume last backed up from.
• If the data set is not currently cataloged, it must have a valid DFSMShsm backup version to determine the original source volume. The volume where the data set was located, and where incremental backup last found the data set, is used to locate an eligible dump copy.

• If FROMVOLUME is used to direct DFSMShsm to restore a data set from a dump copy, the dump copy made from the FROMVOLUME specified is used, regardless of the catalog status of the data set when the dump copy was made. The data set is restored to the FROMVOLUME specified and left uncataloged.