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Data recovery on Raid 5 array in ReadyNAS 2120v2
Hi, I have a ReadyNAS 2120v2 with 4 x 4TB disks in a Raid 5 configuration. Some newer, recent, and important files were deleted before a backup could be run. I am currently investigating ways to ...
While I do not have a 2120V2, I find it highly unlikely that Netgear is using an entirely different RAID configuration (hardware RAID) on that small segment of the market. AFAIK, there has been no hardware RAID acceleration in ReadyNAS since the NV+ (V1).
The standard OS6 RAID is MDADM software RAID with BTRFS volumes, and all RAID configuration is on the drives themselves. The RAID controller you tried may recognize MDADM RAID arrays, but the OS you were using clearly does not recognize the BTRFS file system. There are MDADM and BTRFS drivers available for Windows, both still in beta, that might help. But more mature (though expensive) software like ReClaiMe, which is designed as a recovery product, will likely be more effective.
MDADM for Windows (WinMD): https://github.com/maharmstone/winmd
BTRFS for Windows (WinBTRFS): https://github.com/maharmstone/btrfs
ReClaiMe: www.reclaime.com
It is a shame that calls for re-instatement of the ReadyNAS OS4.x recycle bin in OS6 made years ago in this forum fell on deaf ears at Netgear, who incorrectly seem to think that snapshotting serves the same purpose.
While I do not have a 2120V2, I find it highly unlikely that Netgear is using an entirely different RAID configuration (hardware RAID) on that small segment of the market. AFAIK, there has been no hardware RAID acceleration in ReadyNAS since the NV+ (V1).
The standard OS6 RAID is MDADM software RAID with BTRFS volumes, and all RAID configuration is on the drives themselves. The RAID controller you tried may recognize MDADM RAID arrays, but the OS you were using clearly does not recognize the BTRFS file system. There are MDADM and BTRFS drivers available for Windows, both still in beta, that might help. But more mature (though expensive) software like ReClaiMe, which is designed as a recovery product, will likely be more effective.
MDADM for Windows (WinMD): https://github.com/maharmstone/winmd
BTRFS for Windows (WinBTRFS): https://github.com/maharmstone/btrfs
ReClaiMe: www.reclaime.com
It is a shame that calls for re-instatement of the ReadyNAS OS4.x recycle bin in OS6 made years ago in this forum fell on deaf ears at Netgear, who incorrectly seem to think that snapshotting serves the same purpose.
Did you have snapshots set up for the shares? If you did (or think you might have) then you could use the boot menu to mount the volume read-only, and then see if the files you need are in a snapshot.
If not, you could try ReclaiMe RAID recovery software - that would require connecting the 4 disks to a Windows PC.
mdadm and btrfs alone won't let you recover deleted files.
But more mature (though expensive) software like ReClaiMe, which is designed as a recovery product, will likely be more effective. ReClaiMe: www.reclaime.com
Purchasing and using ReClaiMe allowed me to recovered the deleted files after pulling the drives from the 2120V2 and connecting them to the sata ports on a PC running Windows 7. Thank you very much for your help.
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