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Forum Discussion
RN104 Coming up in safe mode, can access web i/f but login fails. Can't access via telnet.
Here's the history of the issue, questions at the end. Any help appreciated. Before this unit was working fine, then at some point today users couldn't access SMB shares on the device. From info...
rapple wrote:ReadyNAS does not detect any disks...
they are definitely in there and inserted.
Power down, and connect the disks to a Windows PC (either with SATA or a USB adapter/dock). Then test them with vendor tools (Seatools for Seagate, Dashboard for Western Digital).
It could be that the NAS SATA hardware failed. A power issue could also be the cause. But I think it's also possible that one of more failing disks are locking up the SATA bus.
So, they are WD Red, so dashboard it was.
Installed each device one by one in a USB hub and all showing 0 data used (presumably because that's Windows data, which it isn't) but all are showing no SMART errors, no reallocated sectors and approx 84500 plus or minus some hundred apiece of power on hours which is about right for the service they've done so far. I'm happy therefore that at least the SMART data is being read off the drives and there are no immediate issues with them.
I'm assuming therefore at this point that disks are OK and there's either a power issue or a board issue with the ReadyNAS. The power brick doesn't show any outward signs, but it's a brick and as you can see has given 10 years service so anything is possible there. - Incidentally the ReadyNAS DUO, which is still the RSYNC backup device, is where I have retrieved all the critical data from. That's had another 5-6 years additional service if memory serves me right.
Anyway with the above results I assume that I need to find another RN104 chassis, or is it possible to use any RN device that takes 4 or more drives to try to recover the data?
Presumably also I need to set the same OS level to ensure compatibility with any control data stored on the disk?
...or is there a more general way to mount these drives in a Linux m/c?
Thanks.
rapple wrote:
The power brick doesn't show any outward signs, but it's a brick and as you can see has given 10 years service so anything is possible there.
A risk buy of a new brick would be one option.
rapple wrote:
Anyway with the above results I assume that I need to find another RN104 chassis, or is it possible to use any RN device that takes 4 or more drives to try to recover the data?
Any OS-6 ReadyNAS with 4 or more bays will work. Ultra and Pro ReadyNAS (4.2.x) can be converted to OS-6, so they would also work. (Note the NVX cannot be converted).
It would be good to first ensure that the replacement NAS is running the same (or newer) firmware. I suggest doing an install with just a scratch disk in the NAS, and update the firmware if needed. Then power up with the disk in every bay, to make sure all the bays work. Then migrate the disks.
rapple wrote:
...or is there a more general way to mount these drives in a Linux m/c?
Yes, you just need mdadm and btrfs installed on that machine. The details depend on the expansion history. Running lsblk on the disks would give us the partition info we need to assemble the RAID arrays with mdadm and then mount the volume.
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