It is set to 9 days, and I can't remember what the initial default was.
I run the synthetic fulls each week, so 9 days gives me the overlap I 
want in case something happens and the synthetic doesn't run right on 
schedule.  I keep two weeks of incrementals, and three fulls on this system.

-Jon

> Did you have to change your "Keep TIR Information" to longer than 1 day
> in your Master server properties to get this to work?
>
> -Jonathan 
>
> -----Original Message-----
> From: Jon Bousselot [mailto:jon-bousselot AT pacbell DOT net] 
> Sent: Wednesday, February 20, 2008 1:21 PM
> To: Martin, Jonathan
> Cc: VERITAS-BU AT mailman.eng.auburn DOT edu
> Subject: Re: [Veritas-bu] Question about synthetic backups
>
> The synthetic full keeps track of moved and deleted files that occur
> between incrementals.  When the incrementals are assembled, the changes
> are reflected in the new synthetic full.  I just tested this to see for
> myself. (ver 6.5)
>
> I believe this feature is enabled (and required) in the policy under the
> label "collect true image restore information" and "with move
> detection".
>
> I moved a subdirectory to a new directory level, and the incremental
> backed up the entire contents of that moved data.  It isn't smart enough
> to see that the files were same just moved to a new home.  Maybe
> de-duplication will handle this in future versions.
>
> -Jon
>
>   
>> > You need to run a differential and then a synthetic full immediately 
>> > following.  The synthetic basically takes your last full and applies 
>> > all the differentials to it to create a new "full" image.
>> >
>> > Full + Diff + Diff + Diff = Synthetic Full Synthetic Full + Diff + 
>> > Diff + Diff = Synthetic Full Synthetic Full + Diff + Diff + Diff = 
>> > Synthetic Full etc...
>> >
>> > The "Synthetic Full" is a normal full image backup according to 
>> > Netbackup and gets used in the next Synthetic Backup.  I think there 
>> > are issues with this related to deleted files (differential backups 
>> > don't realize that something got deleted so the new full will have all
>>     
>
>   
>> > the deleted files) so I would recommend "refreshing" the synthetic 
>> > with an actual full every so often.
>> >
>> >
>> > -Jonathan
>> >
>> > -----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 2:20 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
>> >
>> > +---------------------------------------------------------------------
>> > +-
>> > |This was sent by dbergen AT cucbc DOT com via Backup Central.
>> > |Forward SPAM to abuse AT backupcentral DOT com.
>> > +---------------------------------------------------------------------
>> > +-
>> >
>> >
>> > _______________________________________________
>> > Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu 
>> > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>> >
>> > _______________________________________________
>> > Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu 
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>> >
>> >   
>>     
>
>   

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