Forum Discussion

Aspirant

Feb 11, 2020

ReadyNAS 2120 v2 performance degraded

I've been getting alerts from my ReadyNAS 2120 v2 saying the Volume is degraded, but there is nothing I can see that is causing the issue, and i've run a Defrag, a Scrub, a Disk Test and rebooted it ...

Marc_V

NETGEAR Employee Retired

Feb 12, 2020

AndrewBLQ

Welcome to the Community!

RAID in degraded mode means you have a disk failure and this should be taken care of immediately as another failure will get your data in trouble. The screenshot you provided does not show anything, You may want to download the full logs and check disk info and smart history logs to see what disk failed or dropped out.

Running volume maintenance or any process at this time is not recommended since RAID is in degarded mode. It would be best to check on the disk that went out and replace it.

HTH

Regards

AndrewBLQ
Aspirant
Feb 12, 2020
Thanks Marc_V

I have downloaded the full logs and I cannot see anything relating to a HDD failing. That screenshot and the alert emails are the only thing that is showing there is an issue, but it doesnt show me what disk is failing or why. Is there a specific log file I should be looking in?
- StephenB
  Guru - Experienced User
  Feb 12, 2020
  AndrewBLQ wrote:
  
  Is there a specific log file I should be looking in?
  
  Start with mdstat.log. You can copy/paste it into a reply if you like. It will give you the status of each RAID group (including the OS partition and the swap partition).
  
  Disk_info.log will give you smart stats for each disk. Of course system.log and kernel.log would generally also have any I/O errors for the disks.
  - FriendlyRaptor
    Aspirant
    Feb 16, 2020
    StephenB wrote:
    KFC Experience wrote:
    Is there a specific log file I should be looking in?
    Start with mdstat.log. You can copy/paste it into a reply if you like. It will give you the status of each RAID group (including the OS partition and the swap partition).
    
    Disk_info.log will give you smart stats for each disk. Of course system.log and kernel.log would generally also have any I/O errors for the disks.
    The screenshot you provided does not show anything, You may want to download the full logs and check disk info and smart history logs to see what disk failed or dropped out.