[Veritas-bu] NetBackup poor performance
2004-05-25 12:56:31
This pointer works and gets what you want
http://seer.support.veritas.com/docs/240733.htm
This one does not
> http://seer.support.veritas.com/docs/240733.pdf
Note the difference.
Brian McDonald
-----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 Jason
Helfman
Sent: Tuesday, May 25, 2004 12:35 PM
To: Brian Baldridge
Cc: veritas-bu AT mailman.eng.auburn DOT edu
Subject: Re: [Veritas-bu] NetBackup poor performance
Does anyone have a copy of this guide? The document doesn't exist at
this link or google search.
Brian Baldridge wrote:
> Mark,
>
> Take a look at the NetBackup Tuning Guide:
> http://seer.support.veritas.com/docs/240733.pdf
>
> In answer to your question about why performance parameters are not
> configured up front is because of the nearly infinite combinations of
> hardware/software/operating systems that NetBackup is expected to work
> with.
>
>
>>-----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 Mark
>>Sandrock
>>Sent: Tuesday, May 25, 2004 10:23 AM
>>To: veritas-bu AT mailman.eng.auburn DOT edu
>>Subject: [Veritas-bu] NetBackup poor performance
>>
>>
>>I am struggling to grasp the use of NetBackup DC 4.5 on Solaris 8.
>>The only server is a V480 with a stand-alone SDLT 320 and an L8 tape
>>library having an LTO-2 drive.
>>
>>I went through the wizard and configured things for a simple test,
>>but it's really hard to tell what's going on and when.
>>
>>I eventually got a manual backup to run, and was surprised to see
>>the i/o to tape running about 5000KB/sec. Our current backup method,
>>ufsdump, gets about 15000KB/sec. Pretty big difference.
>>
>>So a Google search finds a posting from 2001 talking about an
>>undocumented method of improving NBU i/o performance by creating
>>files called "NUMBER_DATA_BUFFERS", "SIZE_DATA_BUFFERS", and
>>"NET_BUFFER_SZ".
>>
>>Are these files the way to go? And if so, why is this information
>>not explained and configured right up front?
>>
>>Thanks for any help.
>>Mark
>>--
>>Motorola Personal Communications
>>Urbana-Champaign Design Center
>>sandrock AT urbana.css.mot DOT com
>>Voice: 217-384-8552
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>>Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
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>>
>
>
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