Legato NetWorker ClientPak and Storage Node Installation Guide

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Configuring and Operating NetWorker Autochanger Support
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NetWorker does not recognize the following volume labels and considers these
volumes unlabeled and available for use:
• Volumes without a label
• Volumes labeled with something other than a NetWorker label
• Volumes with NetWorker labels that were written in a density different from the
device in which it is currently loaded. For example, if you performed NetWorker
backups on an older 8 mm tape drive, a newer 8 mm tape drive might not be able
to read the volumes from the older device because a different density was used to
write the data.
Important: Be careful about sharing NetWorker volumes between different backup
devices if you have auto media management enabled. You can potentially relabel and
overwrite valuable data. If you place or store other volumes you do not want
NetWorker to use in the autochanger, place them in slots that are not included in the
available slot range assigned for NetWorker to use.
The auto media management attribute is located in both the Jukeboxes and Devices
resources. For autochangers, you only need to enable the Auto Media Management
attribute in the Jukeboxes resource. NetWorker does not allow you to enable Auto
Media Management in the Devices resource if the device is located in an autochanger.
If you back up to a stand-alone device and want to use the Auto Media Management
feature, refer to “Stand-Alone Device Configuration” in the Legato NetWorker
Administrator’s Guide, UNIX Version.
Cleaning Cartridge Use and Management
Maintaining a backup device in good working order requires periodic cleaning.
NetWorker provides automatic cleaning of devices located in an autochanger.
NetWorker does not support automatic cleaning for stand-alone devices.
The Legato NetWorker Device Supplement contains a list of currently supported
autochangers for which NetWorker automatically recognizes cleaning cartridges.
Use both the Jukeboxes and Devices resources to make the necessary selections for
automatically cleaning your autochanger devices.
The choices specific to the autochanger appear in the Jukeboxes resource, where you
enable and disable the automatic cleaning feature. Select the appropriate cleaning slots
for the cartridges.
The functions specific to the devices located in the autochanger appear in the Devices
resource. You are notified when a device needs cleaning and of the date the device was
last cleaned, and can decide how often a device should be cleaned.
NetWorker only cleans devices before mounting or after unmounting a volume in a
device to ensure that there is no interference with other autochanger operations.