If you restart a failed checkpoint backup it doesn't start from the beginning, 
it "checkpoints" the last location it wrote successfully / completed fragment 
and restarts the backup there.  Make sure you've got extra large window sizes 
to accommodate. :)
 
-Jonathan

________________________________

From: veritas-bu-bounces at mailman.eng.auburn.edu [mailto:veritas-bu-bounces 
at mailman.eng.auburn.edu] On Behalf Of Paul Keating
Sent: Monday, December 11, 2006 9:36 AM
To: Clooney, David; Veritas-bu at mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] Checkpoint on backups.


>From what I understand, when you hit a checkpoint, the current fragment is 
>completed, then a marker "checkpoint" is written, then another fragment begins.
 
In other words, I don't believe checkpoints will work unless you have a 
fragment size specified. Even then, if your fragment size is large compared to 
the amount of data on the client you're backing up, then it may not be 
worthwhile.
 
I don't know a whole lot of detail about them, other than that.
 
Paul
 
 
-- 

        -----Original Message-----
        From: veritas-bu-bounces at mailman.eng.auburn.edu 
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Clooney, 
David
        Sent: December 11, 2006 6:59 AM
        To: Veritas-bu at mailman.eng.auburn.edu
        Subject: [Veritas-bu] Checkpoint on backups.
        
        
        
        Hi,
         
        Can anyone give a brief explanation of exactly what goes on when 
checkpoint's are implemented on normal backup schedules. Understand what they 
do but need to know what is going on in the background.
         
        Cheers
         
        Dave

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