RAID Array performance on an HP Proliant ML350 G5 Smart Array E200i

Posted by Nate Pinchot on Server Fault See other posts from Server Fault or by Nate Pinchot
Published on 2010-06-11T12:51:43Z Indexed on 2010/06/11 12:53 UTC
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raid

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Hardware

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disk-performance

We have a client who is complaining about performance of an application which utilizes an MS SQL database. They do not believe the performance issues are the fault of the application itself.

The Smart Array E200i RAID controller has 128MB cache and we have the cache set to 75% read/25% write. The disk array set to enable write caching.

Recently we ran a disk performance test using SQLIO based on this guide. We used a 10 GB file for the test found that the average sequential read rate was ~60 MB/sec (megabytes/sec) and the average random read rate was ~30 MB/sec. Are these numbers on par for what the server should be performing? Better than on par? Horrible? Amazing?

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