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Terminal Server Bog

I have a terminal server that momentarily locks up. While watching Performance monitoring i have noticed that the bog happens about the same time average Disk queue length goes to 100. I also see multiple Errors in the Event log stating the following.

This is a Supermicro AS1020 server Using RAID 1 on an Adaptec AIC-8130: (Marvell 88SX6041) 4-port Hercules-2, rev B2, SATA Controller. Unit is running but performance is severely impacted.

Event Type:      Error
Event Source:      aar81xx
Event Category:      None
Event ID:      9
Date:            2/13/2010
Time:            2:43:48 PM
User:            N/A
Computer:      PPTSA
The device, \Device\Scsi\aar81xx1, did not respond within the timeout period.

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0000: 00 00 10 00 01 00 68 00   ......h.
0008: 00 00 00 00 09 00 04 c0   .......À
0010: 01 01 00 50 00 00 00 00   ...P....
0018: 00 00 00 00 00 00 00 00   ........
0020: 00 00 00 00 00 00 00 00   ........
0028: 00 00 00 00 00 00 00 00   ........
0030: 00 00 00 00 07 00 00 00   ........
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Lofty Worm
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This could be caused by either a bad SCSI controller or a bad SCSI Drive.  My first thought would be to install the latest manufacturer drivers for your SCSI controller.  Secondly check out this Microsoft link:
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This has just begun, The system shows the Array as Healthy, but when running the system PerfMon show maxed on the Avg .

CPU and RAM look Good. MEMTEST ran it all looks good. I have looked on Adaptec for Diagnostic tools and have not found any for this particular controller, I have also looked on Supermicro's site and have not found anything either.

Patmac951: Thanks I have already gone through that..

This system is not running Scsi drive.. Its running SATA. Problem resolved though. I had a bad drive in the array. I have replaced the drive, and all is running good. For some reason the Adaptec Drive Management tool doesn function correctly with SATA drives..but the Bios level Configuration Tool does.

Good to hear, good job.