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ReadyNAS RN3220 Volume is Degraded but all green lights & no errors on disks
Hello,
I'll start by stating I do not know what this "*Select Location" thing is while creating this discussion, so I apoligize if I used the wrong "Location".
Here is the issue:
I have a Netgear ReadyNAS RN3220 with 8 x 3 TB drives running Firmware "6.9.4 Hotfix 1" in a RAID6 array and it is showing the volume as degraded. I hovered over all 8 disks in the RAID6 array and none of them show any errors and all have green lights. I don't understand what is degraded. The online logs only state the volume is degraded so thats no help and I dont know where to look in the logs I downloaded, I tried to attache the ZIP file but I got a error saying it can only take jpg,gif,png, or pdf. I'll add the screenshot of the volumes tab instead...
We only have 2.86 TB used out of 13.46 TB available so I know it is not a full storage issue.
I am not sure what "Scrub", "Balance", or "Disk Test" will do so I haven't tried those yet.
This device is located in a Data Center 2 hrs away so I do not have physical access to it right now.
Not sure what else I need to share about this but ask and I shall try my best to get you an answer.
Thank you,
Leif
23 Replies
Replies have been turned off for this discussion
Hi lfrye,
Welcome to the Community!
The "Degraded" status means there is no RAID redundancy, so any disk failure will result in loss of the volume.
You can send to me the logs so we can analyze it. You may upload it to Google Drive then send to me the download link via PM (private message).
Regards,
Hi John,
Thank you for the reply.
This is kinda odd since there hasn't been any changes to the RAID 6 array and this warning first came up on 7/11/2019. I would think this warning would have been here since the array was created years ago. How does that work?
Also, RAID 6 arrays can handle 2 drive failures since it uses two parity stripes on each disk. So I shouldn't be getting this warning message since RAID is redundant array of independent disks. Kinda odd aswell.
Can I send you the logs via OneDrive link?
Thank you,
Leif
lfrye wrote:
Also, RAID 6 arrays can handle 2 drive failures since it uses two parity stripes on each disk. So I shouldn't be getting this warning message since RAID is redundant array of independent disks.
You will get this message if one (or two ) drives have failed or dropped out of the array. You haven't lost data, but you are being warned that the RAID protection has been degraded.
The green disk status doesn't necessarily mean the disks are healthy. I suggest you should send JohnCM_S a link to your log zip file so he can take a look at what's going on.
If you don't have a backup of your files, then I suggest that you make one. RAID isn't enough to keep your data safe (not even RAID-6).
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