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A SATA reset followed by frozen Duo v1
I've got a ReadyNAS Duo v1 that has been working for me for a few years now. A few days ago I got one of these emails:
This made me nervous and I didn't have a very recent backup so I grabbed an external drive and backed up my whole volume. Fortunately, that seems to be good to go.
Two days later I got four emails stating:
Why didn't it tell me which channel is bad? I logged into Frontview and saw that one of the drives had read errors or something in the SMART status. Unfortunately, I can't remember which drive looked bad, and now I can't get back into Frontview to check.
I attempted to resync the drive as the first message from the Duo asked me to do. Things seemed to be going well and it said it would take 6 hours or something. I set it going before I went to bed and it was still running in the morning and had even more time remaining (something like 11 hours now). It seems like it got stuck on a bad part of the drive or something. A few hours have passed and now I can't login to frontview, I can't SSH in, and when I ping the device I get:
Which seems interesting because it says "Host is down", rather than no response. Now I'm torn about what to do. Should I hard reboot the device (hold down the power button) and see if Frontview comes back up? Should I give it another day and see what happens?
In terms of replacing the drive, right now I have 2 matching Western Digital 2TB WD20EARS drives in there. Should I get another WD20EARS? Or should I get the WD20EFRX, which is on the official hardware compatibility list and claims to be more reliable in a NAS ? How bad is it to have non-matching drives? Or, is the best long term solution to get two new WD20EFRX drives?
Thanks for any advice.
A SATA reset has been performed on one or more of your disks that may have affected the RAID parity integrity. It is recommended that you perform a RAID volume resync from the RAID Settings tab
This made me nervous and I didn't have a very recent backup so I grabbed an external drive and backed up my whole volume. Fortunately, that seems to be good to go.
Two days later I got four emails stating:
Access to the disk on channel (??) is producing I/O errors. Although the array is still redundant, please replace this drive as soon as possible, as it is likely to fail soon.
Why didn't it tell me which channel is bad? I logged into Frontview and saw that one of the drives had read errors or something in the SMART status. Unfortunately, I can't remember which drive looked bad, and now I can't get back into Frontview to check.
I attempted to resync the drive as the first message from the Duo asked me to do. Things seemed to be going well and it said it would take 6 hours or something. I set it going before I went to bed and it was still running in the morning and had even more time remaining (something like 11 hours now). It seems like it got stuck on a bad part of the drive or something. A few hours have passed and now I can't login to frontview, I can't SSH in, and when I ping the device I get:
ping: sendto: Host is down
Request timeout for icmp_seq 0
ping: sendto: Host is down
Request timeout for icmp_seq 1
Which seems interesting because it says "Host is down", rather than no response. Now I'm torn about what to do. Should I hard reboot the device (hold down the power button) and see if Frontview comes back up? Should I give it another day and see what happens?
In terms of replacing the drive, right now I have 2 matching Western Digital 2TB WD20EARS drives in there. Should I get another WD20EARS? Or should I get the WD20EFRX, which is on the official hardware compatibility list and claims to be more reliable in a NAS ? How bad is it to have non-matching drives? Or, is the best long term solution to get two new WD20EFRX drives?
Thanks for any advice.
3 Replies
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- (a) it is fine to have non-matching drives, as long as the sizes are identical. The red drives have worked out well for me, though I am using them in my pro and RN102, not my duo v1. Generally I think the Red drives are a better choice for NAS than the WD greens (and based on what I read here, much better than the newer seagates).
(b) try running RAIDar, and see if it can find the NAS, and tell you the status. Also, is there a light pattern being displayed?
You may end up having to power down the NAS in the end. That may lose your data, so it is good that you were able to complete the backup.
Also, if you can connect the drives to a PC you can see SMARt stats using other tools. - Thanks stephenb. RAIDar can't find it. No particular light pattern. The power light and two green drive led's are lit, but no activity. Looks like I'll power down and pray for the best. I hate relying on a backup so hopefully I can get it back going. I have a WD Red drive on the way for replacement. I'll look up tools to use to test SMART status so I can figure out which is dead.
- So far so good. I pulled the power cord and rebooted the system. Frontview came back up and I was able to check the SMART status on both drives. I pulled the one that was giving errors and now I'm running the duo with a single drive. The replacement should be here Wednesday and I'll see how the rebuild goes.
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