To be fair, you cannot perform more than 9 ndmp differentials, regardless of
filer - its part of the spec for the NDMP protocol... (yes, I know what the P
stands for :p )
Cheers,
Nic
- Reply message -
From: "Kevin Corley"
Date: Wed, Apr 6, 2011 00:20
Subject: [Veritas-bu] NDMP differentials of Netapp path backups
To: "Nic Solomons"
So essentially, you cannot perform more than 9 differential backups of a Netapp
volume?
That could get pretty inefficient if you need to do nightly backups and keep
long term retention. I guess you could always do a LEVEL N+1 every 3 days...
Thanks
-Original Message-
From: veritas-bu-boun...@mailman.eng.auburn.edu
[mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Nic Solomons
Sent: Monday, April 04, 2011 3:31 AM
To: VERITAS-BU@MAILMAN.ENG.AUBURN.EDU
Subject: Re: [Veritas-bu] NDMP differentials of Netapp path backups
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-boun...@mailman.eng.auburn.edu
[mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of deasnutz
Sent: 01 April 2011 20:28
To: VERITAS-BU@MAILMAN.ENG.AUBURN.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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