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HP P400 SAS RAID slow performance

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Last Modified: 2015-03-13
Hello all, I have an issue in HP server with P400 controller on 2008 x64. All in all - it is slow.

I get some 110 MB/s on RAID10 with 6 15K SAS driver, and some 80 MB/s on single SAS 15K drive.

The battery is out now, but the the cache is turned on regardless in settings for testing purposes. Read write is 50%/50%, the firmware is latest, the drivers are latest ver, and all drive have latest firmware installed.

I don't have a clue what to do to fine WTF is wrong with the controller. I asked local HP guys, but they too don't have a clue. - Did anyone have had a similar issue?

Thanks!
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