My vault duplications are running at up to 160MB/s. My environment is
Windows based and we have a 4 LT03 drive HP library.

I did try turning on multiplexing but found that the write throughput
got worse the more I multiplexed so I have turned it back off for the
moment. 

The buffers will have an affect on performance. FWIW mine are set to:-

C:\..\VERITAS\NetBackup\db\config\SIZE_DATA_BUFFERS_DISK      1048576
C:\..\VERITAS\NetBackup\db\config\NUMBER_DATA_BUFFERS              64
C:\..\VERITAS\NetBackup\db\config\ NUMBER_DATA_BUFFERS_DISK        64
C:\..\VERITAS\NetBackup\db\config\ SIZE_DATA_BUFFERS             262144
C:\..\VERITAS\NetBackup\NET_BUFFER_SZ                       1048576

What read speeds are you getting during the duplication process? If you
have a look in the 'All log entries' report in the gui you should see a
figure for the read as well as the write process after each image is
duplicated.

Regards

Richard


-----Original Message-----
From: veritas-bu-bounces at mailman.eng.auburn.edu
[mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf Of Darren
Dunham
Sent: Friday, 20 October 2006 9:08 am
To: Veritas-bu at mailman.eng.auburn.edu
Subject: Re: [Veritas-bu] Viewing vault duplication performance.

> Revoking this thread since its absolutely essential to me. I read the 
> mails, went to office and did a
> 
> grep "Kbytes/sec" log.100906 in the bptm folder.
> 
> I found that no single value was above 22 Mbytes/sec, shd that mean 
> that my vaults are not above 22 Mbytes/sec.
> 
> Is there anything specific in the log which I can search for 
> clarifying my vault speed.




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