Determining Which Volumes Are Used for Backup

The Available Slots attribute enables you to control which volumes Backup uses for backing up data. Backup uses all of the volumes in the autochanger for recoveries. However, you can control which volumes Backup automatically selects for backups by designating a range of available slots in the autochanger.

For example, you might designate slots 1 through 5 for your Backup backups in an autochanger that contains 10 slots. The entries can be a range of slot numbers or a single slot number.

With two-sided media, the number of available slots is always half the number of labels (or sides of the optical disks). For example, if you have 32 optical disks, labeled atlas.001.a to atlas.032.b, you have 64 labels (and 64 sides). However, the number of available slots is 32.

Make sure you place volumes in all the available slots of the autochanger so Backup can proceed uninterrupted with an automatic backup.