> We have a client that is supposed to be decommissioned shortly. The owners 
> have asked us to delete all stored data older than 1 month.


You can use mminfo to identify what backups still are maintained by NetWorker, 
and then use that to find out which volumes have those backups.  Then determine 
what is on that backup volume.

mminfo -avot -c (client) -q "savetime<-1month" -r 
volume,ssid,cloneid,client,level,name


If it is a tape volume, then only way to delete the data is to relabel the 
volume.  Not a good idea if there are backups for other hosts.

If it is on a file device, you can delete the saveset, and only that saveset 
will be removed.

You use the nsrmm command to delete the savesets.  For example:

  nsrmm  -d  -S ssid/cloneid

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