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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 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 would instead like to attempt a 'clone' of the bad one to the new one. Suggestions would be appreciated. Thank you.
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.
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Nevermind. I just rubbed some dirt on it and good to go. (Started with a clean slate, it was a redundant backup anyhow)
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.
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.
It seems as though that would create a raid when in fact I operate with a single drive. Once the raid is made and mirrored then would not removing the bad drive result in a raid error status. At that point how would one tell the NAS to operate as non-raid? Thank you.
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