I would have expected NBU to *keep* the info about the full backup until the subsequent differentials/incrementals have expired, however, I believe that NBU would determine that the "cleaned out" files from it's DB (expired) have not been backed up, and include them in a subsequent incremental, or whatever is based on that full (fun to track :)
> From: veritas-bu-request AT mailman.eng.auburn DOT edu
> Subject: Veritas-bu Digest, Vol 78, Issue 7
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Date: Tue, 16 Oct 2012 12:00:09 -0500
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> 1. Incremental backup question (Whelan, Patrick)
> 2. Re: Incremental backup question (Lightner, Jeff)
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> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 16 Oct 2012 13:57:19 +0000
> From: "Whelan, Patrick" <patrick.whelan AT baml DOT com>
> Subject: [Veritas-bu] Incremental backup question
> To: "veritas-bu AT mailman.eng.auburn DOT edu"
> <veritas-bu AT mailman.eng.auburn DOT edu>
> Message-ID:
> <D463AE619BD5C34C83282CD821B8760D0FF772@smtp_mail.bankofamerica.com>
> Content-Type: text/plain; charset="us-ascii"
>
> Hi All,
>
> I suppose the answer is obvious, but I'm having trouble getting my head around it.
> What happens to an incremental backup whose dependent full has expired.
> For example
> A full backup is run and expires in 90 days. 89 Days later an cumulative incremental is run and expires in 30 days. Two days later the Full expires. Is the incremental still useful? If so, to what extent.
>
> Regards,
>
> Patrick Whelan
> Senior NetBackup Specialist
> +44 (0)207 995 9715
>
> ----------------------------------------------------------------------
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> Date: Tue, 16 Oct 2012 15:27:29 +0000
> From: "Lightner, Jeff" <JLightner AT water DOT com>
> Subject: Re: [Veritas-bu] Incremental backup question
> To: "veritas-bu AT mailman.eng.auburn DOT edu"
> <veritas-bu AT mailman.eng.auburn DOT edu>
> Message-ID: <040B89C8B1E1D945AE2700C511A039E92305AF AT ATMEXDB03.dsw DOT net>
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> The incremental will have any files it backed up still on it and those can be restored. However unless most of your files change on a daily basis you?re not likely to have most of the files in the incremental.
>
> That is to say that a full OR an incremental CAN be restored without respect to the other backups but the INTENT is that the full be restored first then the subsequent incrementals (or a single cumulativeincremental) since that full should be restored on top of it to get the changes since the full.
>
> If the full expired but the media it was written on has not been reused you can re-import the full and then restore it. The re-import will change the expiration date relative to the date of import rather than the date of backup.
>
>
>
>
>
> From: veritas-bu-bounces AT mailman.eng.auburn DOT edu [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Whelan, Patrick
> Sent: Tuesday, October 16, 2012 9:57 AM
> To: veritas-bu AT mailman.eng.auburn DOT edu
> Subject: [Veritas-bu] Incremental backup question
>
> Hi All,
>
> I suppose the answer is obvious, but I?m having trouble getting my head around it.
> What happens to an incremental backup whose dependent full has expired.
> For example
> A full backup is run and expires in 90 days. 89 Days later an cumulative incremental is run and expires in 30 days. Two days later the Full expires. Is the incremental still useful? If so, to what extent.
>
> Regards,
>
> Patrick Whelan
> Senior NetBackup Specialist
> +44 (0)207 995 9715
>
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