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If the adhesive label on the volume is missing or illegible, you can determine the
volume's name from the Backup administration program or the command line,
complete one of the two actions:
*In the Backup administration program, either
*Mount the volume and view the volume name in the Devices display, or
*Start a labeling operation and view the Volume Name field in the Label
resource, then cancel the operation.
*At the shell prompt, enter the nsrmm command with the -poption to show the
label of the volume loaded in a device.
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Backup data is destined for volumes from a specific pool. When the data is ready to
be written, Backup monitors the active devices to locate a volume from the
appropriate pool.
If only one volume from the pool is mounted and appendable, the data is directed to
that volume.
If two volumes from the same pool are mounted on devices, Backup considers the
following factors to guide its volume selection:
*The expiration date of the volume
By default, the volume expiration date is set at two years after the date on which the
storage volume was labeled (or relabeled). To override this default setting, change
the volume's expiration date in the Devices resource. If the default setting is
overridden, Backup checks to ensure that the volume expiration date is farther in the
future than the date on which the save set is set to exceed its retention policy. If
Backup finds that the volume expiration date is later than the retention policy, then
the save set is written to the volume. Otherwise, Backup does not write the save set
to the volume. (This checking behavior does not occur if the expiration date of the
volume is not overridden.)
*The volume mode
*If a mounted, appendable volume from the appropriate pool is available,
Backup writes to it.
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