RAID - Dead disk replacement issue. repeating resync
Hi All,
I have a ReadyNAS PRO with 6 disks in an XRAID2 with dual disk redundancy.
We are using it in a work environment with multiple people accessing shares on it. Yesterday morning, I came in and two drives died overnight (in channels 1 and 5). All channels have ST31500341AS drives (Seagata Barracuda 1.5TB, which by the way, probably are the worst drives for this application...they keep dying on me).
Anyway, I swapped both out with new drives. Immediately 1 started resyncing and I got a message that the new drive in channel 5 was dead. So I took the drive from channel 5 out. At that point, I wanted channel 1 to finish resyncing before I put a new drive in on channel 5. So the resync took about 12 hours and was finally done around 10 at night.
This morning, I rebooted the ReadyNAS and as soon as it came back up, the disk on channel 1 started resyncing again and shows that it has 11 hours to complete. Now I am very concerned about that. Why would it start resyncing again? I was planning on swapping the disk on channel 5 today but now I have to wait for it to resync.
Is this something that is normal? I have never had this issue before. I am worried that the disk on channel 1 will start resyncing again tomorrow. Could the NAS box be going bad? Since this is for work, I want to make sure that I fix this before it crashes completely. I do have nightly back ups that I make on this box but if I need to get a new NAS box, I would rather do that before it completely crashes.
Re: RAID - Dead disk replacement issue. repeating resync
From your description, it sounds like the RAID array is at risk (with two bad / suspect drives you no longer have redundancy). It is annoying when it wants to resync when you want to replace the drive. I suppose you could shut down, remove drive 1, restart w/o it, and then hot-insert the new one???
BTW, I agree on the ST31500341AS. I've had them fail at a pretty high rate in ordinary Windows PCs also.
