[Veritas-bu] NDMP Performance

Just an FYI:
 
While I don't use data movers... I believe you can simply disable the
job tracker to get rid of that 30 minute file scanning exercise.
There a reg hack for Windows boxes out there....
 
http://seer.support.veritas.com/docs/265584.htm
 
Cheers,
Jon

________________________________

From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Paul
Keating
Sent: Wednesday, July 19, 2006 9:10 AM
To: Clooney, David; veritas-bu at mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] NDMP Performance


Bank of America, hunh?
Bunch of friends of mine work at your new Canadian office in Ottawa.
(formerly MBNA)
 
Anyhow, with my GF940s, I connected the tape drives to the filer,
installed the NDMP pack on the master, created some policies and started
ripping data off at about 30+ MB/s
 
the data rates you're seeing in Netbackup aren't necessarily accurate,
as the NAS spends a lot of time preparing data for the backup, so that
time with no data transfer is counted in the data/time factoring, as far
as I can tell.
you'd be better off monitoring your throughput at a switchport of
similar.
 
I get sub 1MB/s rates backing up 2 TB in about 45 minutes, but the first
30 minutes is scanning the filesystem, preparing the dump image, and
sending the index/catalog info to the backup server.
 
make sure you've got good pipe from filer -> master.
NDMP is a chatty protocol and does require a decent IP pipe to talk to
the master....
 
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: July 19, 2006 8:56 AM
        To: veritas-bu at mailman.eng.auburn.edu
        Subject: [Veritas-bu] NDMP Performance
        
        
        
        Hi all
         
        Just a quick Q for guidance really . I'm trying to investigate
on ways to increase throughput on NDMP backups 
         
             NetApp R200
             Storagetek L700
             STK 9940b 
         
        Currently averaging around  5mb/sec , surely this can be
improved ?
         
        Any starting points would be grateful.
         
        Dave Clooney
 
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