Your installation can also want to include volume-level backup runs as part of its backup plan. This function is described in the chapter "VBACKUP/VRECOVER."
CA Disk volume-level backup or recover runs do not use the traditional data set-level processing technique that is used by normal DSCL backup and archive processing. Therefore, running the volume-level backup will take much less time than the full volume backup method described earlier in this section. However, because VBACKUP and VRECOVER functions are volume-oriented, you cannot use the volume-level backup tape to restore individual data sets.
Therefore, you can want to use the volume-level backup as your primary backup protection only for volumes with a high activity level; that is, most of the data sets are changed every day or every week. This will save time when running the daily or weekly backups.
If you need to restore data sets on this type of volume, you can issue the VRECOVER command with the UPDATE parameter specified, which will restore the entire volume, then update the modified data sets from your incremental backups. For more details, see the chapter "VBACKUP/VRECOVER."
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