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Forum Discussion
Software to Recover array from each Hard drive outside of Readynas system?"
Is there a recovery software that can rebuild an array from individual drives outside the Readynas system? I have a readynas NV+ V1 and the system is not booting. I have tested each drive and...
I had to do a second take on this response before it sunk in exactly what you are saying.
Normally in raid 5, if a hard drive fails in a 4 drive system, the remaining hard drives can recreate the data regardless of which 3 you use.
You are saying that all the parity is on a single disk? So if that is the case, when you mount to linux can read the information right off the disk without " rebuilding" anything.
In the case of the parity disk failing, all the data should be recovered however if the drive that failed is not a parity disk, that means the data is not recoverable using this linux method? Is that right?
Since this is nonstandard raid(xraid), do you have any tools that know how to rebuild the information using the parity drive? Also, what drive is the parity drive in a 4 drive system?
Is it always the same drive? In my case, drive #3 and #4 are suspect.
Thanks.
If the parity disk is not the disk that fails the system would still boot fine. There would have to be additional problems e.g. with another disk, or a problem on the root volume etc. to still have issues.
In situations like yours a data recovery contract with support could be used. Support would check and see what the best way forward is and may suggest cloning (support can attempt cloning disks using a Linux tool designed for cloning failing disks but if support does that we'd have to charge extra for that, so most users prefer to do the cloning - if required - themselves).
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