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Im getting a 'degraded disk' error from an old PE 2850. I see the orange light blinking on the array so I know where the problem is. The system is running win2003 x64.

Im running OpenManage also and I'd like to add a hot-spare to the system so I can fail over the drive and yank it. When I go into OpenManage Im told there is a degraded 'virtual disk' and that its running RAID-5. Ok - this is fine.

When I click into the virtual disk Im told there are only two disks in the array. I know this isn't true (and just to make sure, I powered down the system and counted 4 disks).

Windows reports 136Gb of space which is consistent with 3 disks in the array (73Gb each).

So - OpenManage tells me I have two disks. Windows acts like it has 3 and the system truly has 4. Which is it?

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Was this originally a 3-disk RAID 5 with a hot spare? Or a 4-disk RAID 5? –  mfinni Apr 24 '12 at 15:49

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I've seen that OpenManage will sometimes remove a failed physical disk from the listing in OMSA. Kind of a PITA, especially if you wanted to make it blink. I'm sure if you booted into the PERC BIOS, you'd see all of the physical disks.

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Im used to it being able to 'blink' disks for me. I've never seen it fail to show one, errors or not. –  ethrbunny Apr 24 '12 at 15:36
    
I started at a new company in December, and we're running all Dell, mostly 1855 or 610/710 blades. I've seen at least a half-dozen drive failures on 1855 where OMSA no longer showed the failed physical disk, same symptom you're seeing. –  mfinni Apr 24 '12 at 15:43
    
Ok - but it seems like OMSA is missing two disks. –  ethrbunny Apr 24 '12 at 15:45
    
What does Windows disk management say it has for volumes and physical disks? –  Bart Silverstrim Apr 24 '12 at 15:46
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If it's on a PERC card you can just pull it and insert a new one and the array should rebuild. Unless there's something wonky with the PERC card or the config... –  Bart Silverstrim Apr 24 '12 at 15:52

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