NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Solved
no volumes after blackout on Readynas Duo V2
Ready NasDuo v2 with Radiator 5.3.13 with originally 2 HDD (X-Raid2) After a power outage in the neighbourhood the NAS lost access to the volumes. I have seen similar posts, but not a solution i...
ReclaiMe is expensive (in part because it supports BTRFS). Another tool you can try is R-linux for Windows (which is free). https://www.r-studio.com/free-linux-recovery/
Have you tried simply booting the NAS with only disk 2 installed? If that fails, you could try again with only disk 1 installed (powering down before moving disks).
It is important to clarify the model - many v1 owners mistakenly think they have a v2. Does your NAS say "ReadyNAS Duo v2" on the front panel?
I started to run photorec which comes with testdisk 7.1 but stopped it after a while seeing that the file structure and names etc are not recovered.
I also triedReclaiMe (not purchased yet), which shows a Linux md-raid volume of the correct size. But the program freezes after 0.02% of the search (and finding 2 files)
I tried EaseUS Data recovery Wizard 15 (testversion), file recovery search brings up a list of more than 4TB of various files, but also a lot without any structure/name/timestamp. But the preview brings some of the files I am looking for. I also tried the NAS recovery but also no success. I think this tool is connecting to the NAS but the required services are not performed…at least it stops with an error.
I would really like to know, if it could be possible to get the volumes back or not. I have a backup from 6 month ago. So data-recovery with 4 TB of data without structure and proper timestamps won’t help me….
Any Idea what could be possible?
ReclaiMe is expensive (in part because it supports BTRFS). Another tool you can try is R-linux for Windows (which is free). https://www.r-studio.com/free-linux-recovery/
Have you tried simply booting the NAS with only disk 2 installed? If that fails, you could try again with only disk 1 installed (powering down before moving disks).
It is important to clarify the model - many v1 owners mistakenly think they have a v2. Does your NAS say "ReadyNAS Duo v2" on the front panel?
Thanks Stephen,
I’ll have a look into your proposed solutions.
It is certainly a V2, as I had a V1 before and upgraded to use larger HDD (now having two WD red 4TB in (WD40EFRX)).
Stupidly, I managed to write something wrong into the partition table of one of it with testdisk on my initial tries (without having a backup of the previous layout). So, at the moment the NAS is accepting one HDD only – however, not showing up volumes. I think I had it in both slots already, but I will give it another systematic try.
If i would like to undo my mistake....could I insert the “modified” one with the one with an intact partition table, and the NAS synchronize/mirror the “intact” one onto the modified one? Or would it be better trying to modify the partition table of the “modified” on to match the intact one again?
Hplar_H wrote:
If i would like to undo my mistake....could I insert the “modified” one with the one with an intact partition table, and the NAS synchronize/mirror the “intact” one onto the modified one? Or would it be better trying to modify the partition table of the “modified” on to match the intact one again
If you hot-insert the modified disk 1, the NAS will sync it with disk 2. That will resync every sector. If you get disk 2 to boot (with the volume), then I'd go this route.
Though if disk 2 won't boot with the volume, then repairing the partition table is probably the better approach, as it gives another chance to get the volume back.
Thanks Stephen,
very good answer how to approach my mistake . About the way I was thinking. Unfortunately the untouched disk would not boot with the volumes in both slots.
Anyway, in the meantime, the R-Linux was able to read and recover the file structure from the untouched disk. I think I recovered all files and folders now (unfortunately also a lot of "garbage" on top : attribute files, deleted files etc). But this will allow me to find those files not in my clean back-up (from half a year ago). Thanks a lot for the hint with R-Linux again!
BR Ralph
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
