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тАО06-30-2010 07:23 AM
тАО06-30-2010 07:23 AM
SmartArray P212 Zero Memory - Bad Performance
i've installed an P212 Zero Memory on an ML110 G6 with 2 SATA2 Harddrives, using a Raid1.
I get an read-performance from about 50MB/s! This is horrible... Is this normal for this controller?
What could i expect for about when upgrading with a 256MB Cache Modul?
Write-Performance is also bad, but this doesn't matter ;)
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тАО06-30-2010 09:33 AM
тАО06-30-2010 09:33 AM
Re: SmartArray P212 Zero Memory - Bad Performance
battery and cache will definitely improve speed, remember to set 100% read 0% writte ratio.
http://h18000.www1.hp.com/products/quickspecs/13203_div/13203_div.html
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тАО06-30-2010 12:27 PM
тАО06-30-2010 12:27 PM
Re: SmartArray P212 Zero Memory - Bad Performance
ot which other hardware raid controller would you suggest? i only need raid1...
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тАО07-02-2010 01:46 AM
тАО07-02-2010 01:46 AM
Re: SmartArray P212 Zero Memory - Bad Performance
But it will require a re-installation, and that could fix the problem, if the OS installation is corruptet.
How do you measure the performance?
What do you expect?
Is the controller still initializing in the background?
Read this:
http://forums13.itrc.hp.com/service/forums/questionanswer.do?threadId=1431497
BR
/jag
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тАО07-02-2010 01:58 AM
тАО07-02-2010 01:58 AM
Re: SmartArray P212 Zero Memory - Bad Performance
i don't think the os is corrput. there is nothing in the eventlog and the os behaves normally. it has also been fresh installed 5 days ago...
for performance testing i've used HDTACH...
the controller isn't rebuilding or so!
i've expected somthing about 100MB/s above! there are sata2 disks that offer 150/300MB/s
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тАО07-02-2010 02:04 AM
тАО07-02-2010 02:04 AM
Re: SmartArray P212 Zero Memory - Bad Performance
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тАО07-02-2010 03:29 AM
тАО07-02-2010 03:29 AM
Re: SmartArray P212 Zero Memory - Bad Performance
It's designed to handle faster disks. So 2 SATA's shouldn't put load on it.
And as you write the sustained transfer rate is 113 MB/sec for the disks.
So it should be possible to get aroud the 100 MB/sec.
Did you read the link?
BR
/jag
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тАО07-02-2010 04:08 AM
тАО07-02-2010 04:08 AM
Re: SmartArray P212 Zero Memory - Bad Performance
i didn't find any possibility to deactivate the drives cache...
or did i misunderstood anything?
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тАО07-11-2010 04:52 AM
тАО07-11-2010 04:52 AM
Re: SmartArray P212 Zero Memory - Bad Performance
The drives' Write cache is disable default from HP.
By the way, I don't feel I'm much help for you.
Are you having any progress?
BR
/jag
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тАО07-12-2010 07:17 AM
тАО07-12-2010 07:17 AM
Re: SmartArray P212 Zero Memory - Bad Performance
thank you for the answer.
the write cache is not the problem, so i don't need to enable it...
i just want to get more read-performance. my avg is about 65MB/s.
in between i tried to connect another drive (with similar technical specifications) directly to the onboard sata using b110i raid with a new os installation, and this gave me about 75MB/s read-performance...
so i think the bad performance is quite usual for the P212 as connecting the drives directly to the onboard sata didn't result in much better values...
i will try to get the 256MB cach module for the p212, maybe this will improve read-performance ;)
what do you think about this?