The DSCL RECOVER command has a VOLUMES= parameter on the SELECT command that assist in identifying volumes from which data sets are to be recovered. If the first volume portion of any multi-volume cluster existed on one of the named volumes, all portions will be recovered to their appropriate volumes. If the TOVOL= parameter is specified, however, RECOVER interprets this to mean that all of the multi-volume portions are to be moved to the single volume specified, which cannot have space to contain it. If it does fit, the extra space that it used can prevent other clusters from being recovered.
The RESTORE command works similarly, but provides greater flexibility. If only the DSN= parameter is specified, all portions of the cluster will be restored to their appropriate volumes, whether it is a single or multi-volume cluster. A VOL= parameter is available that acts the same as the TOVOL= parameter described for RECOVER previous; that is, all portions will be directed to the specified volume. However, parameters MVOL=(..list..), DVOL=(..list..) and IVOL=(..list..) are also available to supply multiple target volumes whenever a multi-volume cluster must be moved. The MVOL= list is sufficient if the data and index components can share the same volumes. The DVOL= and IVOL= lists are provided to allow these two components to be separated, and will override the MVOL= list if both are specified.
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