Have a look at this example:

root@backupserver1 # mminfo -av -r "name,savetime(20),level,ssid,cloneid,ssid(53),ssretent,ssflags,sumflags,client,copies,clflags" -q client=client1 -o t

name date time lvl ssid clone id ssid retent ssflags fl client copies clflg

/oracle 07/20/10 22:00:43 4 3041263719 1279656039 8dcb9c0f-00000006-b5460067-4c460067-44550014-4f222e18 08/20/10 vF cb client1 2

/oracle 07/20/10 22:00:43 4 3041263719 1279656038 8dcb9c0f-00000006-b5460067-4c460067-44550014-4f222e18 08/20/10 vF cb client1 2

/ 07/20/10 22:00:47 4 2974154860 1279656044 00987c05-00000006-b146006c-4c46006c-44590014-4f222e18 08/20/10 vF cb client1 2

/ 07/20/10 22:00:47 4 2974154860 1279656043 00987c05-00000006-b146006c-4c46006c-44590014-4f222e18 08/20/10 vF cb client1 2

Networker works with Saveset-IDs. The ssid also includes all clones (see copies=2 in the example). There’s the same ssid (=3041263719) with 2 different cloneid (=1279656039,1279656038). So if you delete a ssid all clones (original saveset and clones) will also be deleted. It is wise to use ssid(53) (=1279656039 8dcb9c0f-00000006-b5460067-4c460067-44550014-4f222e18) instead of ssid because ssid may not be unique and you don’t want to delete wrong data.
If you want to delete a certain saveset or clone you have to use syntax nsrmm -dy -S ssid/cloneid instead of nsrmm -dy -S ssid or nsrmm -dy -S ssid(53).

Have a look at mminfo and/or nsrmm manpage for more infos

Thank’s for this very interesting post.
And I have a question: have you any idea in case of clones ? Is it necessary finding and deleting “clone id” before “ssid” ?