This method relabels the volume, deletes the volume from the media database, and reinitializes the tape. After a tape is recycled, you cannot use the scannerprogram to recover the contents.
When you purge or delete a volume, the client file indexes do not shrink automatically. Instead, the freed index space is used to allocate records that are added in the future. To reduce the size of the client fi le indexes immediately after you purge or delete index entries, run the following command:

# nsrck -C clientname
To reclaim the index space for all clients, change to the /nsr/indexdirectory and run the nsrck -Ccommand.
Large indexes may take up to a few hours to compress with nsrck. For more details, refer to the following man pages:nsrck, mminfo, scanner, nsr, nsrmm.

How to Override a Retention Policy

Save sets are retained on volumes and in the media database until the save sets expire. Ordinarily, a save set expires and is recyclable when the save set and all save sets that depend on it for recovery pass their retention policies. However, you can explicitly specify an expiration date for a save set that overrides the retention policy. Dependency rules still apply, however, which means that a save set is not marked "recyclable" until all save sets that depend on it are also marked as recyclable. To explicitly override the retention policy, use the save -emanual backup command:

# save -e

Backup Performance

Backup performance varies based on the specific network environment in which Backup operates, in addition to Backup settings. Several factors external to Backup enter into performance calculations, including CPU speed, speed of data storage devices, the limitations of the network, and the volume of network traffic. Within Backup, you can tune performance by changing the following attributes:

Solstice Backup 5.1 Administration Guide*April 1998

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