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Replacing disk in a single drive ReadyNAS 102
ReadyNAS 102 with a single 4TB WD drive was having some quirks after about 1.5 years. NAS says drive is healthy, WD Diags from a desktop says bad sectors. I have a replacement drive but I am concer...
You can run the drive test from the GUI.
Select "volumes", then the settings wheel, and then "volume schedule". One of the choices you can schedule is "disk test".
It really should also be on the main settings wheel, not sure how that got overlooked.
Grill-n-Chill wrote:
I have a replacement drive but I am concerned that if I just slide it in to the second bay that it will try to use it to expand it's storage capacity.
I know this is resolved for you, but thought I should reply for future readers.
With xraid, the second disk is automatically used for redundancy - creating a RAID-1 array. If you had 4 slots, adding a third 4 TB drive would give you a RAID-5 volume (still single redundancy) with 8 TB capacity.
Hello Grill-n-Chill,
Welcome to the community!
For future reference, you might want to read this article.
Please also mark the post that resolve your question.
Regards,
I appreciate your post however the linked article about replacing a RAID drive does not seem at all relevant to my single drive situation. As per marking a post that resolved my solution, none of the posts other than my own 'clean slate' approach have produced a viable answer. The second post about creating a mirrored RAID array gets us half way there but leaves the issue of what happens when the bad drive is removed to return to a single drive configuraion. It would seem that perhaps there is no direct path for single drive replacement, which is fine in my situation where it was only being used for backup.
It is disappointing that the ReadyNAS 102 said the drive was healthy when in fact it had bad sectors causing backup failures with very obscure errors. The ReadyNAS 102 has no intergrated diagnostic to run so we had to pull the drive, put it on a workstation, and run Western Digital diagnostics. I had the NAS configured to email me, which it does during upgrades, etc., but it never registered the bad sectors. Kind of strange in my opinion.
Long story short, it's fixed. Clean slate, backing up. Life is good. Thank you.
Grill-n-Chill wrote:
The second post about creating a mirrored RAID array gets us half way there but leaves the issue of what happens when the bad drive is removed to return to a single drive configuraion. It would seem that perhaps there is no direct path for single drive replacement, which is fine in my situation where it was only being used for backup.
That post appears to be mine. It was explaining what would happen if you added a second drive.
There is no procedure for single drive replacement, other than restore from backup. It would be useful to have one, so perhaps post the suggestion in the ideas for storage forum here.
Grill-n-Chill wrote:
...The ReadyNAS 102 has no intergrated diagnostic to run so we had to pull the drive, put it on a workstation, and run Western Digital diagnostics. I had the NAS configured to email me, which it does during upgrades, etc., but it never registered the bad sectors. Kind of strange in my opinion.
There is a built-in disk check that can be scheduled that is equivalent to the lifeguard long test. But it is only run if you schedule it, or explicitly run it on demand. The volume scrub maintenance check would also have found them.
The short SMART disk check is run daily - but that doesn't scan all the sectors.
I was unable to find the intergrated disk test function. Research found something stating that the ReadyNAS 102 doesn't have this function but that higher end units do (x86). I don't recall where I read that, it was a week or so ago. Please advise if this is incorrect because I would really like to use it.
Much appreciated.
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