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Very slow perf with Raid-5 on Perc s300
Hi,
I have very slow perf with a S300 and 3x1To Constellation ES disk.
I have 4-5 other server with raid-5 on S100 and have about 180-200 Mbits on a the sequential Crystaldiskmark test and have about 75 with my new T110-II !!
The copy volume to volume don't go over 2Mo/s .... Update S300 driver : Done
I have to install this server tomorrow morning...
Thansk for your help
JOHNADCO
847 Posts
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February 6th, 2012 08:00
Make sure in device manager that Drive Caching is enabled / checked for the device.
ON-Serv
5 Posts
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February 6th, 2012 10:00
I have already check this but it can't be checked. When I try I have error pop-up. It seems logical to me that it can't be checked because S300 is a software raid.
Other idea ? ^^
JOHNADCO
847 Posts
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February 6th, 2012 14:00
Hmmmm.... The setting is to turn on the cache ont he drive itself. I have no experience with the s300. But if the drive cache cannot be enabled, I would suspect that is the issue.
ON-Serv
5 Posts
0
February 6th, 2012 14:00
OMG the perf is pretty good now... I have 250Mbits/s at the read Crystdiskmark bench and about 70 just hour before in same configuration... I don't understand what is happening here, and Dell tech lvl2 don't understand too ^^
mojoman317717
10 Posts
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May 9th, 2012 00:00
ON-Serv, I'm looking at possibly using a T110 with four discs in a RAID 5 array. I keep hearing semi-nightmarish stories of <ADMIN NOTE: Profanity removed as per TOU> performance on the software based S100 controller. You indicated you have 4-5 servers using the S100 for RAID 5 arrays. Would you please give some details concerning your performance. if you are getting 180-200Mbps read/write speeds on average, I would consider that amazing. How many discs in your RAID 5 arrays?
Currently I'm running a two disc RAID 1 array and getting 50mbps read/write average speeds. I'm hoping for an improvement, but keep reading about slow performance with the S100. Give me some good news with real world data PLEASE. :~)