Reference Topics
443
B
Spanning Media
After an end of media condition, automatic media selection is a special case
and depends on whether NetBackup is configured to allow backups to span
media.
• NetBackup spans media if
DISALLOW_BACKUPS_SPANNING_MEDIA
is not
present in the registry. Here, NetBackup uses another volume to start the
next fragment and the resulting backup is composed of fragments on
different volumes.
• NetBackup does not span media if the registry specifies
DISALLOW_BACKUPS_SPANNING_MEDIA
. Here, the backup terminates
abnormally and the operation is retried according to the Schedule Backup
Attempts global attribute.
How NetBackup Uses Media in Standalone Drives
The section explains media selection and other aspects of standalone drive
operations.
Media Selection Using Standalone Drive Extensions
When the standalone-drive extensions feature is enabled, NetBackup tries to
use whatever labeled or unlabeled media happens to be in a standalone drive.
This capability is enabled by default during installation. The selection process
is as follows:
1. If a backup is requested and an appropriate standalone drive does not
contain a volume, NetBackup selects one in the same way as for drives in a
robot (see “How NetBackup Selects Media in a Robot” on page 441).
The DeviceMonitor shows the mount request and an operator must
manually insert the volume and assign it to a drive.
2. If an appropriate drive contains a volume, NetBackup tries to select and use
the volume that is in the drive.
• A volume that has been previously used for backups must:
• Not be FULL, FROZEN, or SUSPENDED
NetBackup 3.2 System Administrator's Guide for Windows NT
NetBackup 3.2 System Administrator's Guide for Windows NT