NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
ReadyNAS NV+ RND4000 v3 volume offline after failed drive replacement
Model: ReadyNAS NV+ [X-RAID]
Firmware: RAIDiator 4.1.14 [1.00a043]
X-RAID with 4 2TB disks. WD Green, as shown in screenshot.
Unit of my brother-in-law. I said I would try to look into it to see if it could be repaired.
Disk 3 has failed after a power outage. I just found out this disk has been giving SMART errors for over a year, but the errors had gone unnoticed. Disk 3 was replaced. And after a long resync the volume is now offline and 2 disks show 0 MB free space and the 2 other disks show 1860 GB free space.
What can I try to do here? With 1 disk failed, the volume should still be intact, so what could have gone wrong here?
I will try to make a clone of the failed drive using ddrescue, as desribed here. But hopefully one of you can give a hint in how to restore the volume.
5 Replies
Replies have been turned off for this discussion
I suggest testing the remaining disks with lifeguard in a Windows PC next.
I ran a quick check on disks 1, 2 and 4. And they all look ok.
SMART
Lifeguard
What could have caused the volume to go offline?
tojnk wrote:
I ran a quick check on disks 1, 2 and 4. And they all look ok.
...
What could have caused the volume to go offline?
I agree the disks look ok.
It is possible that the power failure resulted in lost writes - that can damage the file system even when the disks are good.
If he has no backup, you probably will need to look into RAID recovery. R-Studio looks fairly inexpensive (the version you'd need would cost about $79, and you can see if it can recover anything before you purchase). But you would need to connect the three good drives to a PC.
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
