You can only do 9 incremental levels of backup on the NetApps with NDMP.

I haven't used that SET UPDATE directive before (or the SET LEVEL command I 
detail below - I run a weekly full on my volumes, so 9 incremental's is 
enough), but just a quick run down:

There are 10 dump levels for NetApp NDMP (0-9).  A level 0 dump covers 
everything in a volume, a level 1 covers everything newer than the dumpdate for 
the last level 0, a level 2 covers everything newer than the last level 1 etc 
up until level 9.

A Netbackup full backup schedule runs a level 0 dump
A Netbackup cumulative schedule runs a level 1 dump
A Netbackup differential schedule runs a level n+1 dump, where n is the last 
dump level recorded against the volume (NB: at the filer! - if someone is using 
ndmpcopy / doing level 0 dumps to null, this affects the last recorded dump 
level)

You can use the directive "SET LEVEL = 7" (as an example) to force a specific 
level.

Depending on how complex you want your policy configuration, you could set up 
your monthly full, then potentially use an NDMP level per half week (ie week0 - 
0.5 SET LEVEL=1; week 0.5 -week1 : SET LEVEL=2 .... week 4-4.5 SET LEVEL=9) 
but that's going to need 9 policies.

Cheers,
Nic
 

-----Original Message-----
From: veritas-bu-bounces AT mailman.eng.auburn DOT edu 
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of deasnutz
Sent: 01 April 2011 20:28
To: VERITAS-BU AT MAILMAN.ENG.AUBURN DOT EDU
Subject: [Veritas-bu] NDMP differentials of Netapp path backups

Hello everyone-
Looking for assistance on the configuration required got differential 
incremental backups of our Netapp volumes (NDMP) setup. I have been able to get 
what appears to be "cumulative" dumps/backups of our NDMP paths by setting the 
SET UPDATE = Y entry at the beginning of the policy include list.

However, I want want to perform differential backups of the paths, ideally, a 
once monthly full, followed by daily differentials the remaining days.

Anyone have any tips?

Thanks again

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