Home / server / Questions / 438546
Accepted
Saariko
Asked: 2012-10-16 05:02:57 +0800 CST

How to know which disk has failed on a Mirrored Raid? marked as DR0

  • 772

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

enter image description here

  • 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

enter image description hereenter image description here

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

enter image description here

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

enter image description here enter image description here

hard-drive

2 Answers

  1. Best Answer

    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 :)

    • 8

  2. 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.

    • 3