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1. Re: ICH10R question
Bill Gehrke Jan 26, 2011 9:33 AM (in response to jkosmicki)Jeff
Your write performance is terrible, a single drive should be much better write performance than that. If it is at all possible I would break your RAID 5 and just for test purposes benchmark two or three drives at a time maybe even in plain RAID 0 I suspect that one or more of your drives does not like being in a RAID array. I have seen this same symptom in my RAID testing where the write performance severly falls off. What benchmark are you using? I just bought 8 each 2.5-inch Dell "pulled" drives, and am returning one drive as destroying the 8 disk performance. I just happened to have an identical Seagate drive so I am still in business.
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2. Re: ICH10R question
jkosmicki Jan 26, 2011 9:54 AM (in response to Bill Gehrke)Hey Bill,
I am using both IO meter and the Blackmagic Disk Speed Test, they both give me the same results, so I think it is accurate. I have a 5th identical drive so I will do some tests. thanks for the info.-Jeff
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3. Re: ICH10R question
ECBowen Jan 26, 2011 2:24 PM (in response to jkosmicki)Open up the Intel Rapid Storage Manager and select the raid volume. Then select the advanced link. Check mark the box for "Enable Write Cache"
Then Win 7 should stop throttling the drive performance on write.
Eric
ADK
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4. Re: ICH10R question
jkosmicki Jan 27, 2011 11:25 AM (in response to ECBowen)"Enable Write Cache" was one of the first things I tried, unfortunately it only speeds things up a few MB/s.
Now I tried every combination using 5 different drives in 3 and 4 drive configurations, the only thing that seems to work well is running RAID 0. So I can assume the drives are OK, and it is something somewhere between the Intel chip and Win 7. I'll keep looking...
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5. Re: ICH10R question
Harm Millaard Jan 27, 2011 11:39 AM (in response to jkosmicki)Raid5 on the ICHR10 is not very fast, but the degradation is worse than I expected. 320 read speed is very good, but 45 write speed is way lower than around 160 I would expect, assuming a single disk achieves around 133 MB/s transfer rate. Do you have the latest BIOS and Intel drivers installed?
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6. Re: ICH10R question
ECBowen Jan 27, 2011 11:43 AM (in response to jkosmicki)If you right click on the raid volume in Device manager and go to properties and then select the Policy tab,what does it show as selected?
Eric
ADK
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7. Re: ICH10R question
jkosmicki Jan 27, 2011 1:02 PM (in response to ECBowen)Yep, it was the BIOS. Although none of the BIOS updates mention any fix to the Intel chip, it did the trick, 300MB/s read - 150MB/s write, not bad at all. Thanks everyone for the help.
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8. Re: ICH10R question
Harm Millaard Jan 27, 2011 1:06 PM (in response to jkosmicki)Glad this solved it for you. Your results now are where I expected them to be.




