Incremental backup processing backs up a single-stripe or multiple-stripe data set when the data set’s name is specified in the BACKDS command, and other required conditions are satisfied.
During volume incremental backup processing, DFSMShsm backs up a sequential extended format data set when the first stripe (volume) is being processed. Backup is skipped when subsequent stripes (volumes) are being processed.
If a sequential extended format data set is larger than the available free space on one DASD backup volume, then the backup fails. Note that it is not advisable to use extended address volumes (EAVs) as backup volumes because the cylinder managed space will not be utilized.
The space used on all volumes is reported (message ARC0734I) for the sequential extended format data set backed up.
During full physical volume dump processing, DFSMShsm dumps only the stripe on the volume being dumped. You are responsible for performing full physical volume dumps for each volume containing a stripe of a sequential extended format data set. It is recommended that you use incremental backup versions for multiple-stripe sequential extended format data sets.