The diffsnapshotname option allows you to specify which differential snapshot, on the target filer volume, to use during a snapshot differential backup. This option is only specified if you also specify diffsnapshot=latest.
If this option is not specified, diffsnapshot=latest selects the most recent existing snapshot on the filer volume and uses it as the differential snapshot.
This option can be used with supported x86_64 Linux and AIX® clients.
This option can be used with supported Windows clients.
This option can be specified in the client options file or on the command line.
diffsnapshotname volume_base_snap
diffsnapshotname nightly.?
dsmc incr \\DRFiler\UserDataVol_Mirror_Share -snapdiff
-useexistingbase -basenameshotname="nightly.?"
-diffsnapshot=latest -diffsnapshotname="nightly.?"