Because CA VM:Backup uses a read-only link to back up data from minidisks, most backups can be performed at any time without interrupting users' work. Users are not asked to detach minidisks and generally are unaware that CA VM:Backup is running. If CA VM:Backup is unable to obtain a link to a minidisk, the data is not backed up.
If CA VM:Backup encounters an error on a CMS minidisk, CA VM:Backup backs up the entire minidisk using a physical format. CA VM:Backup cannot detect changes being made to a minidisk while the minidisk is being backed up physically.
Errors or the inability to link are indicated in the output listing returned to the user specified under Report Guidelines or on the REPORT record in the backup job template file. For more information, see the chapter "Managing Backup Job Template Files" in the Administration Guide or the REPORT record for backup job template files in the Template Programming Interface Guide.
If CA VM:Backup detects that changes continue to be made to a CMS minidisk after it has tried to back up the minidisk the number of times specified in the backup job template, CA VM:Backup either performs a physical backup of the entire minidisk or skips the minidisk and continues to the next one. For more information, see Minidisks That Are Changing During Backups.
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