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readynas RN3220 volume degraded volume resyncing
I have a readynas 3220 RNR-12A, (all 12 drives) originally I had a drive#4 showing as failed, and then drive #11 showing yellow with reallocated sectors. to be safe I did a backup to a 10 TB usb3 dr...
It has to complete the re-sync of the first drive before it starts the second.
I assume you have RAID6 or RAID10, or your volume would be dead. I suggest you check the SMART stats on the one that is syncing, because it may also have issues. If it does, you may want to pull that new drive and wait for the re-sync to complete (or, possibly, fail to complete) and see if you still want to just add that new one to the others or replace the one that's currently syncing. Your volume is probably currently unprotected (depends on the RAID type), so that backup was a good fallback plan, but let's try to get you back up with a good volume and no need to restore the backup data.
Thanks for the reply, I had to move the NAS in the rack that it was in, so I carefully powered off removed it from the rack and put it in it's new home, then powered back up, and the #4 drive now showed healthy ( but checking I can see reallocated sectors- another fail coming) so now drive #11 is now resyncing up to 8% now, after this is done, I expect #4 to fail again, and I i'm ready with the replacement already. do you think it will rebuild if I pull #4 out and put a new drive in?
Rollerball2021 wrote:
do you think it will rebuild if I pull #4 out and put a new drive in?
Yes, but I would wait. Even if there are errors on the drive, it will still provide some amount of RAID redundancy, which would protect your data if there are errors on yet another disk.
However, if the errors slow down the resync too much, you can pull #4 as well. The NAS only resyncs one drive at a time, so it doesn't matter if you hot-insert the replacement or wait until #11 completes.
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