Make sure you have setup appropriate tunable parameters on your media
server.  Make sure the NT buffer_size setting in the NT registry is set to
128k for Netbackup.  Split the directories up and run multiple data streams,
multiplexed to a single tape.

Matthew Moody
MCSI

-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu]On Behalf Of David A.
Chapa
Sent: Tuesday, June 25, 2002 2:16 PM
To: Prasad Chalikonda
Cc: David A. Chapa; veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] Performance Question...


Thanks.

I was hopeful that maybe I missed something...but I hadn't.  No logging is
taking place on this client.

David

Quoting Prasad Chalikonda <prasadcm AT optonline DOT net>:

> Try turning logging off completely - I mean even deleting all the
> directories under netbackup\logs, and test the performance.
>
> I was in a similar predicament a month ago, and turning logging off on a
> 2000 cluster (DL580's) made backups go from 700kb/s to 11Mb/s (9840B
> drives in a SAN).
>
>
> Prasad.
>
>
>
> David A. Chapa wrote:
>
> > Okay, I have a client who is having some serious performance issues with
> their
> > NT / 2000 backup jobs.
> >
> > One client in particular is a 2000 machine with 300GB RAID 5, they have
a
> LARGE
> > NUMBER of SMALL FILES.
> >
> > We went through all of the normal test, network, ftp, bpbkar to
dev/null,
> etc.,
> > etc. (believe me we did our due diligence)  We did identify that
defrag'ing
> one
> > of the drives helped in the backup performance (~1GB/hour), but not
nearly
> as
> > good as it should be performing (20 - 30 GB/hour to 9840A's and B's)
> >
> > Any creative ideas out there for making this run FASTER?
> >
> > Or are we just SOL because of the NUM FILES and their TINY size?
> >
> > Thanks
> >
> > David Chapa
> >
> >
> > _______________________________________________
> > Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
> > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
> >
> >
>
>



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