I would assume the automatic restarts would also use the checkpoint, but I'm 
not 100% certain.  Mostly, I use this for larger file systems that once failed, 
take a long time to re-run.  Usually I fail because of a bad tape or drive, or 
the client being down in which case the reruns all fail too until I fix the 
issue.  As far as your VSP issues - you can try using a different VSP provider 
(I think windows shadow copy works better than VSP) or disable VSP (be sure to 
monitor your logs.)  Also, if you are running 5.1 update to 5.1 MP5.  There was 
an issue I had with VSD files filling the hard disk, causing the backup to fail 
and then not automatically deleting themselves.
 
-Jonathan

________________________________

From: Clooney, David [mailto:david.clooney at bankofamerica.com] 
Sent: Monday, December 11, 2006 9:56 AM
To: Martin, Jonathan (Contractor); Paul Keating; Veritas-bu at 
mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] Checkpoint on backups.


Martin,
 
So you have to manually restart the job ? I take it a second/third attempt 
would use the last checkpoint too ?
 
Dave

________________________________

From: Martin, Jonathan (Contractor) [mailto:JMARTI05 at intersil.com] 
Sent: 11 December 2006 14:53
To: Paul Keating; Clooney, David; Veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] Checkpoint on backups.


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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