Explanation: dsname is a required
positional parameter specifying the fully qualified name of the data
set you want to recover. For dsname, substitute the fully
qualified name of the data set you want to recover. You can specify
an asterisk (*) as the dsname to request that the volume
you identify with the TOVOLUME parameter is recovered. Unless FROMDUMP
is specified, the volume must be a level 0 volume. If FROMDUMP is
specified, the volume can be a DFSMShsm-owned DASD volume.
During volume recovery, if DFSMShsm created backup versions of
both cataloged and uncataloged data sets that have the same data set
name and DFSMShsm created them from the volume being recovered, DFSMShsm
recovers the backup version that has the latest creation date and
the same data set organization.
Defaults: None.
Note: - Because dsname is a required positional parameter, you
must specify it immediately after the command name. You cannot specify
an alias for dsname. If you do, DFSMShsm does not recover
the data set.
- DFSMShsm does not handle partitioned data set members individually.
If you specify a partitioned data set with a member name, DFSMShsm
recovers the entire partitioned data set.
- A DUMP VTOC copy data set must exist in order to restore a data
set from a DUMP copy, except when the DUMPVOLUME subparameter is specified.
By using the DUMPVOLUME subparameter, you are deliberately bypassing
this requirement; therefore, no data set verification is performed
on the dump tape. If the data set you are trying to restore is not
on the dump tape, DFSMShsm still ends with a successful message even
though the data set was not restored.
- DFSMShsm cannot recover an integrated catalog facility catalog
data set from a dump copy. An integrated catalog facility catalog
that was dumped by DFSMShsm can be recovered from a dump copy without
DFSMShsm.