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RAID 10 Volume Failed but only One drive has an error

HI guys, I currently have a server running windows server 2008 R2 with IMSM 8.9.0.1023. I recently booted up the system and it has told me that my data volume has failed even though it is configured as a raid10 with one drive out of the four giving me an error. Do you have any idea as to what might be going on? I know that the volume should not have failed since only one drive has gone down.
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  1. Are you sure it's raid 10, or could it be raid 0? That's the only way I can see 1 drive causing the raid to fail.
  2. Yeah its definitely raid 10... Its a raid0+1 setup
  3. ss202sl said:
    Are you sure it's raid 10, or could it be raid 0? That's the only way I can see 1 drive causing the raid to fail.


    Here is an image of my screen:

  4. Best answer
    The most common cause in this situation is that another drive is also unstable.

    If you don't have a backup, your best bet is to image all of these drives then attempt to manually reconstruct from 2 of the drives. If you're not comfortable doing this, then you'll need a professional lab.
  5. TyrOd said:
    The most common cause in this situation is that another drive is also unstable.

    If you don't have a backup, your best bet is to image all of these drives then attempt to manually reconstruct from 2 of the drives. If you're not comfortable doing this, then you'll need a professional lab.


    Thanks, Sorry if this might be a stupid question but how would i go about manually reconstructing the drives?
  6. djbail said:
    TyrOd said:
    The most common cause in this situation is that another drive is also unstable.

    If you don't have a backup, your best bet is to image all of these drives then attempt to manually reconstruct from 2 of the drives. If you're not comfortable doing this, then you'll need a professional lab.


    Thanks, Sorry if this might be a stupid question but how would i go about manually reconstructing the drives?


    There is commercially available software out there like RAID Reconstructor that you can use to analyze and rebuild a broken RAID volume from images.

    The idea in this case is if you have the right 2 drives in tact physically in a RAID 10, you can reconstruct the RAID even if they weren't part of the same RAID 0 set.

    The point is that you will want to make images first in case you make a mistake trying to reconstruct, because this is NOT beginner software.
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