Forum Discussion

Retired_Member

Jun 18, 2023

Solved

NS104 Unknown RAID Need Help with recovery

Hello Community, Yesterday I woke to a few Emails from my Ready Nas 104. There seemed to be an issue over night and the system went into a Data Unavailable state. This has caused a mayjor outage to...

Retired_Member

Jun 19, 2023

Hello Stephen B.

Thanks for the reply.

I am 100% sure they were not removed. There was a power issue with the powersupply not connected correctly. I't been plugged in since 2015 and the main to the stepdown was llose. So I am 90% sure that was the issue.

The NS104 console has disk test. Do you know some reason that is not good to use to test?

Any ideas on getting the volume online without having to pull the disks?

StephenB

Guru - Experienced User

Jun 19, 2023

(fwiw, there is no NS104 ReadyNAS).

But normally the disk test is on the volume settings wheel - not sure if you can run it. But it would be reasonable to do it if the system will let you.

It would also be good to download the log zip file from the logs page.

Retired_Member wrote:

Any ideas on getting the volume online without having to pull the disks?

Is ssh enabled on the NAS?

Do you have any experience with the linux command line?

Retired_Member
Jun 19, 2023
Hello Stephen,
I have the log bundle already. SSH is not enabled and I can't enable it becasue the volume is not online.
- Retired_Member
  Jun 19, 2023
  No Volume Exists for RAID. I know it will be there. It is just a matter of telling the system the volume exists. Is there any way to fsck the disks. I don't know if an OS reinstall will help with this.
  - StephenB
    Guru - Experienced User
    Jun 20, 2023
    Retired_Member wrote:
    
    No Volume Exists for RAID. It is just a matter of telling the system the volume exists.
    
    Well, not really. There are a couple of scenarios.
    
    One is that the power surge damaged the disks - the disk test would let you know that.
    
    A second is that there were disk writes cached in RAM that were lost when the power was cut. This would result in an out-of-sync RAID array that won't mount. It is possible to forcibly mount the array, but there can be file system corruption because of the lost writes. This could just be some errors in a file. Or it could be worse - if a directory wasn't re-written properly, you could lose a lot more.
    
    Do you have any experience with the linux command line?
    
    FWIW, RAID isn't enough to keep your data safe. That requires a backup. Hopefully we can recover your data with minimal loss - if we can do that, I suggest putting a backup strategy in place.