CBergen,

  You're not the only one that would like some enlightenment...I mean,
on synthetics backups. I don't understand why incrementals have to be
continuously run at all. As I understand it, that is the point of
synthetic backups as to have a full and just backup the changes from
that point forward with synthetics? That is the way TSM's synthetic
backups work with the option of how many 'versions' to retain. I'm on
5.1 (getting ready to upgrade to 6.5.1) so maybe synthetics are
different in 6.x? What is exactly done between the required incrementals
and the synthetics? Does each synthetic combine the previous two
incrementals and how; as a differential and then expire the two tapes
that were used for the incrementals (just an example if two were used)or
delete the incrementals images on the tapes OR disk?

Regards,
Steve

-----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 dbergen
Sent: Tuesday, February 19, 2008 12:20 PM
To: VERITAS-BU AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Question about synthetic backups


When I attempt a synthetic backup and the most recent backup of the
client is a full backup nothing happens.

Nothing happens because Netbackup says there was no incremental backup
to analyze. My question is: So What?

I want another full backup, to a completely different volume pool,
shouldn't Netbackup realize that the volume pool is different and run
the synthetic backup again?

Hopefully someone can tell me what I am doing wrong here.

Thanks,
dbergen

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