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Forum Discussion
Volume Degraded without errors
Hello! I have a ReadyNas 104 with 2 WDC WD40EFRX-68WT0N0 4TB NAS HDs. Out of the blue, the system started to show the 2nd HD as DEGRADED. I have destroyed, reseted the hole system and for...
mvlaran wrote:
I'm quite comfortable with linux / unix. If you have a how-to, I would like to try.
Enable ssh (if not enabled already). Then log in as root, using the the NAS admin password.
The process of removing the failed drive from the array is actually pretty simple (it's much more complicated if you are removing a drive from RAID-5 or other more complicated modes). It's described in the second post here:
If you vertically expanded the volume in the past, you will have multiple RAID groups (not just md127). If that's the case, you'd need to repead his process for the other RAID groups in the volume. You might also need to do it for the OS partition (md0).
A single-drive JBOD on ReadyNAS is actually nothing more than a RAID1 with a missing disk that just doesn't report that it's missing. So unless the warnings bother you, there is no reason to change anything. But if you really want to, see this: Reducing-RAID-size-removing-drives-WITHOUT-DATA-LOSS-is-possible.
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