"Index from Snapshots" SLP operation
I'm studying the Replicator Director.
The Replicator Director Guide available at this address
pag. 91-93, describes the "Index from Snapshots" operation.
"Use the Index From Snapshot operation to index (that is, to catalog) snapshots. Indexing a snapshot creates an image .f file for the snapshot in the NetBackup catalog. With the image .f file in place, the administrator can browse and restore files and directories from any copy of that snapshot, even those in long-term storage.
The adminstrator can restore the files by using the NetBackup Backup, Archive, and Restore client interface or the Restore operation in OpsCenter. Use the bplist command to view the contents of the .f file.
Note: Without the Index From Snapshot operation, it is not possible to browse and restore individual files and folders using OpsCenter."
I'm a bit confused about the purpose of this operation.
Can I make granular restore without an "Index from snapshots" operation using the BAR?
When this operation is useful/essential?
What are main implications in using or not this operation?
I understand that I can make restore of file or directory from a tar file generated froma "backup from snapshot" file. In this situation an "Index from snapshot" operation is useless. Is this correct?
Any info, link to docs, idea or explanation on this topic is very apreciated.