Raid 5 crashed
posted by choll15 on Aug 28, 2007
We had a power outage at the weekend.
Now my NAS raid 5 array is unavailable.
The html interface is available and reporting the volume is 'crashed'.
Any way of recovering the data?
Thanks
Chris
Solution #1
posted on Dec 06, 2007
ApprenticeHi Chris,
How many drives are part of the array and what type are they? Are the drives making any unusual sounds like clicking or screeching? If not, then you should be able to recover the data. If the drives are making clicking sounds, you will probably need a professional data recovery service that specializes in Raid 5 data recovery to help you.
If the controller shows that only 1 drive is bad, you should be able to rebuild it by replacing that drive. If the controller shows all the drives are bad, then it is most likely a problem with the Raid 5 controller itself. In this case, you could try putting the drives in a working version of the same enclosure/controller.
Check the obvious also, like loose connections to the drives. Whatever you do, dont force a rebuild as this will probably result in permanent data loss.
Wesley Gill
Gillware Inc.
Raid Recovery Info
How many drives are part of the array and what type are they? Are the drives making any unusual sounds like clicking or screeching? If not, then you should be able to recover the data. If the drives are making clicking sounds, you will probably need a professional data recovery service that specializes in Raid 5 data recovery to help you.
If the controller shows that only 1 drive is bad, you should be able to rebuild it by replacing that drive. If the controller shows all the drives are bad, then it is most likely a problem with the Raid 5 controller itself. In this case, you could try putting the drives in a working version of the same enclosure/controller.
Check the obvious also, like loose connections to the drives. Whatever you do, dont force a rebuild as this will probably result in permanent data loss.
Wesley Gill
Gillware Inc.
Raid Recovery Info
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Solution #2
posted on Aug 31, 2007
Well from a SUN StorEdge 3510 RAID controller, there should be an option to rebuild your RAID 5 set. Do you see in your html interface a failed drive? Hopefully it is only one drive. Did you have any local or global spares assigned to the RAID set?
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