Re: [Veritas-bu] Full backup followed by a Differential = Another Full

Subject:

From:

"Rajmund Siwik" <rsiwik AT broadcom DOT com>

To:

"'Veritas-bu AT mailman.eng.auburn DOT edu'" <Veritas-bu AT mailman.eng.auburn DOT edu>, "'Randy Doering'" <rdoering2 AT verizon DOT net>

Date:

Wed, 10 Dec 2008 11:49:00 -0800

You have to setup Cumulative incremental I believe as ndmp backup levels go to 9.

After 9 every backup is a full backup unless reset. Cumulative incremental resets it so you'll get a differential next.

This is the case on NetApps.

Rajmund Siwik

Broadcom Corporation

From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Randy Doering
Sent: Wednesday, December 10, 2008 7:43 AM
To: Veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Full backup followed by a Differential = Another Full

Greetings,

Backup Client = Isilon NAS Unit - NDMP. NBU version is 6.5.3.

Did Complete Fulls, with all of the /ifs/projects/ areas in the Backup Selection, starting on 11/26.

This past weekend I kicked off Differential Incrementals for the same Backup Selections.

All of the areas in that /ifs/projects appeared to have completed as expected except for one.

With this one (10+TBs, 1,643,099 files) during the backup NBU said it was doing a Differential, but when it was all done, it had actually backedup everything again.

I can go into Backup and Restore for this client, and choosing "show all backups", it will show the Full that was started on 11/26 and will also show the Differential that was started on 12/6 with the same Modification date (prior to 11/26) for each.

Wouldn't have noticed so much, but with it taking 4+ days and using 16 tapes, has got me wondering about it.

If I kick off another Differential this coming weekend, I certainly don't want to have yet another backup that gets all of the data once again.

Any thoughts?

Thanks,

Randy

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