[Veritas-bu] SIZE_DATA_BUFFERS number for HP LTO3 drives [C1]
2007-03-26 15:45:34
Subject: |
[Veritas-bu] SIZE_DATA_BUFFERS number for HP LTO3 drives [C1] |
From: |
backupicici at gmail.com (Veritas Netbackup) |
Date: |
Tue, 27 Mar 2007 01:15:34 +0530 |
Hi Team,
What if I have both the ESL (LTO-3) and the VTL (Ultrium-2) drives on the
same server.
What to I set, is there any guideline for an environ with mixed set of
drives.
Regards,
BIJU
On 3/26/07, Chris Freemantle <chris at fil.ion.ucl.ac.uk> wrote:
>
> Misha,
>
> Try 256 kB
>
> if you search on "LTO-3 SIZE_DATA_BUFFERS" and "netbackup tuning guide"
> you will find a number of very useful documents. As a starter, have a look
> at -
>
> h71028.www7.* hp* .com/ERC/downloads/5982-9971EN.pdf
>
> http://seer.entsupport.symantec.com/docs/244652.htm
>
> You should be aware that Windows server 200 SP1 limits the
> SIZE_DATA__BUFFERS to 64kB, see
>
> http://support.microsoft.com/kb/907418/
>
> this seems to be fixed in SP2 (thanks to Ric Davis for that info)
>
>
>
> http://seer.support.veritas.com/docs/183702.htm
>
> Sugest "NOTE: For Digital Linear Tape (DLT) drives, the number that seems
> to give the best performance for SIZE_DATA_BUFFERS is 65536 "
>
> I wonder if anyone has SIZE_DATA_BUFFERS number for HP LTO3 drives ?
>
>
> --
> Misha Pavlov
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> --
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> ---
>
> REMEMBER- There is only one certainty about storage systems - they *will*
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>
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>
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>
> rather than individual team members
>
> Chris Freemantle
> Data Manager
> Wellcome Trust Centre for Neuroimaging
>
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