Our 2ndry DC, which is on a W2K8R2 Mirrored software raid has lost it's sync, and disk management displays the failed redundancy error

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  • How do I know which of the disks has failed? (beside to try and replace one - and see if it loads and syncs)

On the device manager, under disks I see both disks, one of them has an icon of: Disable, while the other doesn't

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  • Event log displays an event id 7 - bad block on Hard disk DR0

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The thing is that looking in device manager, both disks are located in '0' location, which is bizzare

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From an elevated command prompt run diskpart. Once you're in diskpart, run detail disk and detail volume after selecting the appropriate disk/volume using the select command. This should list the health state of each disk.

Of course, in this case, the yellow caution symbol on disk 0 is probably a good indicator :)

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If you look in the disk management screen, Disk 0 is displayed with a yellow warning icon, while Disk 1 is not. I would hazard a guess that it was Disk 0 which reported the bad blocks, but you might want to investigate that yourself before pulling drives.

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  • wow, can't believe I missed that one :-/ but still, yea, ill need to investigate - hopefully will pull the correct one – Saariko Oct 15 '12 at 14:29
  • +1 Disk with Yellow Yield sign is the "bad" disk. – Chris S Oct 15 '12 at 14:48

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