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Readynas alert message High uncurrectable error count on disk3
Hi,
I have 6 disks in my NAS and 2 volumes. I'm getting warnings of an impending disk failure (high uncorrectable error count) on disk 3.
This is how the disks are stacked in the R316
Disk 1 RAID 1 / SSD
Disk 2 RAID 1 / SSD
Disk 3 Readynas X-raid (5) / Data
Disk 4 Readynas X-raid (5) / Data
Disk 5 Readynas X-raid (5) / Data
Disk 6 Readynas X-raid (5) / Data
Is the warning about disk 3 (channel 3) as it's placed in the NAS and as numbered above? or is it Disk 3 of the Readynas X-raid (meaning disk 5 is failing). I think it's just disk 3 because the serial matches.. but i'm still not sure. so, to be sure i'm asking here. in case i remove a disk that is not faulty maybe rendering the raid useless.
I've already copied the files that are most important to the Raid 1.. This is why i created this separate raid (and i don't have to download it all from the cloud again. Saves time)... but i would like to see if replacing the disk works in this case. just a piece of mind in case any of the other 3 disk fails in the future.
JayJay_seal wrote:
I have 6 disks in my NAS and 2 volumes. I'm getting warnings of an impending disk failure (high uncorrectable error count) on disk 3.
This is how the disks are stacked in the R316
Disk 1 RAID 1 / SSDDisk 2 RAID 1 / SSD
Disk 3 Readynas X-raid (5) / Data
Disk 4 Readynas X-raid (5) / Data
Disk 5 Readynas X-raid (5) / Data
Disk 6 Readynas X-raid (5) / DataIs the warning about disk 3 (channel 3) as it's placed in the NAS and as numbered above?
Yes.
I recommend hot-swapping with the replacement disk. Also that you either use a a NAS-purposed CMR disk (such as WD Red Plus or Seagate Ironwolf) or an enterprise-class drive. Many desktop drives in the 2-6TB range are SMR (as are the WD Reds) - they should be avoided.
JayJay_seal wrote:
but i'm still not sure. so, to be sure i'm asking here. in case i remove a disk that is not faulty maybe rendering the raid useless.
You are right to be careful on that, as people have lost their volumes by pulling the wrong drive.
You could also download the full log zip file, and look in disk_info.log That will also list the disks in channel order, with serial numbers and some smart info. The channel numbers there are 0-5, so the problem disk should show up in channel 2.
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JayJay_seal wrote:
I have 6 disks in my NAS and 2 volumes. I'm getting warnings of an impending disk failure (high uncorrectable error count) on disk 3.
This is how the disks are stacked in the R316
Disk 1 RAID 1 / SSDDisk 2 RAID 1 / SSD
Disk 3 Readynas X-raid (5) / Data
Disk 4 Readynas X-raid (5) / Data
Disk 5 Readynas X-raid (5) / Data
Disk 6 Readynas X-raid (5) / DataIs the warning about disk 3 (channel 3) as it's placed in the NAS and as numbered above?
Yes.
I recommend hot-swapping with the replacement disk. Also that you either use a a NAS-purposed CMR disk (such as WD Red Plus or Seagate Ironwolf) or an enterprise-class drive. Many desktop drives in the 2-6TB range are SMR (as are the WD Reds) - they should be avoided.
JayJay_seal wrote:
but i'm still not sure. so, to be sure i'm asking here. in case i remove a disk that is not faulty maybe rendering the raid useless.
You are right to be careful on that, as people have lost their volumes by pulling the wrong drive.
You could also download the full log zip file, and look in disk_info.log That will also list the disks in channel order, with serial numbers and some smart info. The channel numbers there are 0-5, so the problem disk should show up in channel 2.
Thanks for your answer.
i have swapped the correct disk (i first shut down the NAS to be very certain it was the correct disk. I have restarted the nas with the faulty disk in it and hot swapped the disk for a new disk.) The volume is now auto resyncing!
Thanks again, it worked! First time i have seen the red harddisk status light in 5 years 🙂 If i ever buy a new NAS it's going to be a netgear again. It's a bit sad the processor and memory are a bit poor to do more with it. (i have installed an extra RAM stick to upgrade to the max already (4gb is the max, i guess)
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