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Forum Discussion
ReadyNAS RN104 Dead Message
I have had no problems with my ReadyNAS RN104 for 7+ years in RAID 5, when a few days ago I got this message: "Disk in channel 4 (Internal) changed state from ONLINE to FAILED." I had been running wi...
rxmoss wrote:
I went into the admin and while I could access some volumes, other critical volumes seemed to have no files.
Not sure what you mean here, because it sounds like you only have one volume. Do you mean shares?
rxmoss wrote:
I'm trying to figure out next steps and would deeply appreciate some guidance:
I would start by putting in the cloned 6 TB drives in slots 1-3 (leaving slot 4 empty) with the NAS powered down. Then try booting up read-only, and see if the volume mounts. It will show degraded if it does.
StephenB wrote:
rxmoss wrote:
I went into the admin and while I could access some volumes, other critical volumes seemed to have no files.
Not sure what you mean here, because it sounds like you only have one volume. Do you mean shares?
rxmoss wrote:
I'm trying to figure out next steps and would deeply appreciate some guidance:
I would start by putting in the cloned 6 TB drives in slots 1-3 (leaving slot 4 empty) with the NAS powered down. Then try booting up read-only, and see if the volume mounts. It will show degraded if it does.
Thanks very much for the reply.
I am sure I am using the wrong terminology, but yes, when I went into the admin, I could see the various folders (shares?) I created long ago, but some subfolders were empty and void of content.
Thanks for your suggestion re volumes 1-3 with the cloned drives. I will try that.
Is there any reason to believe that this is a hardware and/or power supply problem? Given that the drives seem to be fine, I'm trying to figure out why readynas would have given me a drive 4 error, followed by a drive 2 error.
@rxmoss wrote:
I am sure I am using the wrong terminology, but yes, when I went into the admin, I could see the various folders (shares?) I created long ago, but some subfolders were empty and void of content.
To clarify the terminology: You had one RAID-5 volume (likely called data) comprised of four disks. You also had shares (folders) on the volume that you created with the NAS admin ui.
Keeping this straight will be helpful as you work to recover the data, as miscommunications could make things even more difficult.
@rxmoss wrote:
Is there any reason to believe that this is a hardware and/or power supply problem? Given that the drives seem to be fine, I'm trying to figure out why readynas would have given me a drive 4 error, followed by a drive 2 error.
It's hard to rule out the power supply, but I am thinking there might have been a read error on disk 2. That would have aborted the resync, and let you with a failed volume. I've seen that scenario here before.
That is one rationale for suggesting using the three cloned disks, instead of the original three. I'm suggesting leaving out the new disk 4, because we don't know if the sync actually fully completed on the new drive. Booting read-only will keep the system from changing anything on the volume for now.
It might also be useful to download/install RAIDar on a PC.
I booted my three 6tb cloned drives in read-only mode and I see the following. Am I supposed to do something else or does this indicate bad news?
rxmoss wrote:
I booted my three 6tb cloned drives in read-only mode and I see the following. Am I supposed to do something else or does this indicate bad news?
Not good news, but potentially fixable. You definitely don't want to create a new volume.
Try downloading the full log zip file. There's a lot in there - if you want help analyzing it, you can put the full zip into cloud storage (dropbox, google drive, etc), and send me a private message with a download link. Send the PM using the envelope icon in the upper right of the forum page. Don't post the log zip publicly.
Do you have any experience with the linux command line?
I'm asking because there are two main options to pursue:
- try to force the volume to mount in the NAS
- use RAID recovery software with BTRFS support (ex: ReclaiMe) on a Windows PC.
The first option requires technical skills and use of ssh/linux command line, the second option will incur some cost.
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