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Forum Discussion
RND6000 Remove inactive volumes Disk 1,2,3,4,6
Hello,
I am requesting your assistance in my attempt to recover my data following a failure of one of my hard drives (slot 5) on my RNDP-6000 running under OS6.
1°) I replaced my defective slot5 hard drive (4 to) with a smaller one (3 to) so as not to lose any data.
2°) The reconstruction seemed to have worked because I still had access to all the data, but the drives remained greyed out.
3°) I replaced the drive again with an other 4 to hard drive.
4°) The NAS displays two volumes:
- a 13 TB volume for drives 1, 2, 3, 4, and 6,
- a 1 TB volume on drive 6.
The NAS requests the deletion of the volumes from inactive hard disks 1, 2, 3, 4, 6 (13 to volume) and disk 6 (1 to volume).
5°) I deleted the 1 to partition from disk 6, thinking that it was causing problems with the volume reconstruction, but this did not change anything.
Is there a solution that will allow me to recover my original volume and start rebuilding without losing my data?
I found this article, which seems to be the solution to my problem, but I don't know enough about mdadm commands to adapt it to my problem.
ReadyNAS RN424 | Inactive Volume + RAID Issue | NETGEAR Communities
I hope one of you can help me. Thank you in advance for your help!
4 Replies
I forgot to mention that my NAS consists of three 3TB disks and three 4TB disks, and that they are assembled as shown in the following image.
https://ibb.co/rGhvRNVq
1°) I replaced my defective slot5 hard drive (4 to) with a smaller one (3 to) so as not to lose any data.
5°) I deleted the 1 to partition from disk 6
Both of these actions were mistakes, and as a result you might not be able to save your data.
Likely you will need data recovery - either
- getting a USB enclosure+purchasing recovery software that supports both linux RAID and BTRFS
- contracting with a company that does data recovery
Was the defective disk completely dead? Do you still have it (not erased or reformatted)?
No, I don't think it was completely dead (the volume had gone to dead and errors were accumulating).
The disk was coming to the end of its warranty, so I sent it back quickly.
For recovery, do I need to connect all the RAID disks to USB?
The disk was coming to the end of its warranty, so I sent it back quickly.
Since you no longer have it, it can't be used in any recovery attempt.
For recovery, do I need to connect all the RAID disks to USB?
Yes. Though the drive you tried to replace won't be useful, since the NAS wouldn't have resynced it. (It will only do that if the drive is at least as large as the one you replaced).
And unfortunately, the deletion of the volume on disk 6 will be a problem, since you only have single redundancy with RAID-5/XRAID. And you are down two drives (both disk 5 and disk 6).
So you would need to use RAID recovery software (such as ReclaiMe) and hope that the filesystem structures on disk 6 are still there.
You might consider using a data recovery service.
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