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02-19-2012, 10:00 AM #1Premium Member
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3Ware Hardware RAID - Auto Verify ON or OFF
As per the title, what setting do you use and why please?
We're finding on servers with it OFF that there are no issues, but on servers with it ON every so often it kicks a drive to DEVICE-ERROR status and the unit into DEGRADED status even though further checks on the drive show all is good.
Regards,
Suhail.OSHS Ltd
OSHS Services - DNS Clusters | R1Soft Licenses | R1Soft CDP Storage | UK Server Colo | UK Rack Space
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02-19-2012, 10:36 AM #2Web Hosting Master
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What drives are you using?
50% of our servers are 3Ware cards (9650se, 9690sa, 9740-4i) and I'm pretty sure all of them have auto-verify turned on.
I've never had any issues with it, are you sure there is no chassis vibratrion? We had issues with a few cheaper chassis causing lots of RAID dropouts but since replacing the fans + seating with rubber grommits all is well.
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02-19-2012, 10:52 AM #3Web Hosting Master
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Code:Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy ------------------------------------------------------------------------------ u0 RAID-10 OK - - 64K 596.025 ON ON ~]# uptime 14:40:39 up 304 days, 9:36, 1 user, load average: 0.31, 0.14, 0.09
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02-19-2012, 11:12 AM #4Owner of the net for a day
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We have multiple dozens of 3ware cards, all have auto verify on. In the rare occasion one is kicked out of RAID and rebuilt it generally fails in the next month or so....so we take those device error reports seriously
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02-19-2012, 12:14 PM #5Premium Member
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Thanks for your replies.
Server chassis are mainly SuperMicro and drives WD Caviar.
The vibration issue is interesting, will look into this.
But my real question is why use auto verify ON? What's the purpose?OSHS Ltd
OSHS Services - DNS Clusters | R1Soft Licenses | R1Soft CDP Storage | UK Server Colo | UK Rack Space
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02-19-2012, 12:21 PM #6Web Hosting Master
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Just to check the integrity of the array. You shouldnt need to have it on, but it doesnt hurt. I've had an array go inconsistent on Adaptec cards before even when the array was optimal.
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02-20-2012, 04:24 AM #7Aspiring Evangelist
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Always keep it on, and never had a problem.
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