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guser

4 Posts

2377

June 29th, 2006 16:00

testing RAID disk failure?

Hello,
I'm running a Dell PE 2850 with the following RAID configuration:
 
RAID 5
------
Channel/Disk/Size
0/0/300GB
0/1/300GB
0/2/300GB
 
RAID 1
------
Channel/Disk/Size
0/3/70GB
0/4/70GB

The OS is running on the RAID1 array.  Slot 0/5 is empty. 
 
Just to test how the server acts, I stopped the server, pulled out disk 0/0 and then restarted the server.  After checking the SCSI drives, it squawked about a missing drive and stopped booting.
 
I shutdown the server, put disk 0/0 back in, pulled out disk 0/3, restarted the server.  After checking the SCSI drives, again it squawked about a missing drive and stopped booting.
 
Should the server not have continued booting, and warned me via beep codes or LED indicators? 
 
I expexcted that it would have at least done that when a disk was missing from the RAID1 config?
 
If I had a spare disk in slot 0/5, would it have made a difference?
 
Any advice appreciated,
/guser

Message Edited by guser on 06-29-200612:18 PM

simpleme

24 Posts

July 8th, 2006 14:00

afaik did the Raidcontroller on PE2850 not beeping. It's normal the boot stops at raidcontroller. Normally your server is running. If hdd would fail hotspare will start to rebuild.

If you have installed OpenManage and would monitor you system you would getting error message.

jeffy210

33 Posts

July 21st, 2006 17:00

If you want a test, don't do it with the server off, but yank a drive while the system is running. When we got our PV660f and our 6450, I set up the server initially, then I just yanked a drive on the RAID 1 (onboard), put it back in and then did the same for the RAID 5 on the 660f. The system barely hiccuped, and the alarm went off, but the sytem just kept chugging away. When I put the disks back in the system went on it's merry way rebuilding them.

As for your system not wanting to boot, I can only think because it was in a power off state it didn't know what the correct configuration was supposed to be and was wanting some sort of user input in the setup.

Reason I say that is the PERC cards store the configuration in both NVRAM and on each drive. So if the card fails, it can rebuild from the drive configuration.

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