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VA7400 performance

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CARLOS SOUSA
Occasional Advisor

VA7400 performance

Hello,
We have a VA7400 array with 73 x 73GB in auto raid. Yesterday we tried to copy from one lun to another about 15GB of files. The all process took 4H ?!?!?!?!? and the overall performance of the array was badly damage.

Any ideia of how to fix this bottleneck ?
5 REPLIES
Torsten.
Acclaimed Contributor

Re: VA7400 performance

Hi Carlos,

please tell us some more details about your configuration (host,OS, connection ...).

Hope this helps!
Regards
Torsten.

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CARLOS SOUSA
Occasional Advisor

Re: VA7400 performance

Hi,
VA7400 is connected to a 2 x 1GB Brocade Switchs for redundancy and a SunSparc V880 Solaris Server v 8.0 with FC HBA's. What we have done was "mv" of one filesystem from one LUN to another one.

Thanks in advance for your help
Torsten.
Acclaimed Contributor
Solution

Re: VA7400 performance

performance depends on many, many things.
First, what firmware is on the box?
Try a search in the forum for va7400 performance and you will find many hints like this thread

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=139864


Hope this helps!
Regards
Torsten.

__________________________________________________
There are only 10 types of people in the world -
those who understand binary, and those who don't.

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No support by private messages. Please ask the forum!

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Mahesh Kumar Malik
Honored Contributor

Re: VA7400 performance

Hi CARLOS

You may disable Write Cache option to see remarkable improvement in VA7400 performance

Regards
Mahesh
CARLOS SOUSA
Occasional Advisor

Re: VA7400 performance

Hi Makesh,
Thanks for your reply. As far as I know after firmware rev HP15 was introduced a new read pre-fetch algorithm in read cache that is disable by default. What will be the expected impact on overall performance if we turn it enable ?

Regards
Carlos de Sousa