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I have an HP DL360 G6 with a P410i RAID card with 256 MB cache. I am using Windows Server 2012.

I use Intel 520 series 240 GB SSDs in RAID 1+0, but the speed is very slow.

I checked the speed with crystal disk mark:

read =450mb / write=70mb/s

read 4k=29mb/ write 4k=0.7mb

I updated the firmware to 6.64 which is the newest version.

I installed the smart array driver in Windows.

I compared it to a 72GB SAS disk which has no problem:

read 120mb/ write=120mb

read 4k=1.2mb / write 4k=1.2mb

When creating a RAID5 with 4 Intel SSDs I get better speeds:

read 890mb /write 460mb

read 4k = 32mb/ write 4k=29mb

I want to use RAID1 for my disk, but can't fix this problem, the write speeds are very slow.

Greg Askew
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pvd276
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1 Answers1

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The P410i comes with a write cache and a battery. The battery keeps the data in the cache, even if the server is powered off - so that it can flush the cache should the power be restored in time.

If the battery is flat, the write cache is disabled by default. In the RAID Array Configuration BIOS (Ctrl+F8 when booting up) you can override this setting and force the write cache to on. You might also be able to do the same from the Raid Array Configuration Utility from Linux or Windows.

Alternately you can replace the battery.

Dagelf
  • 643