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Forum Discussion
Restore RAID to ReadyNAS System
How do I restore my ReadyNAS 316 to full RAID? Before this all started I had 5 disk drives, and my recollection that everything was happily RAIDed. I got an error message that Drive 3 was failing...
You don't actually have two volumes. You have two sections of one volume that the OS cannot reconcile as one. So, it labels the second section data-0 since there can't be two with the same name. The blue normally indicates which drives are a part of which volume. data is currently selected, and this shows the NAS sees those two drives as one volume. If you select the data-0 "volume", it will turn others blue. What I find as odd is that is says the size of the two 6TB is over 14TB, which cannot be. But I guess that's just more of the confusion the OS has in assembling the volume.
The end result is that none of your data is accessible and you are going to have to manually re-assemble it into one volume to be able to access it. Some data loss is probable.
The likely cause is that the failing drive did completely fail during the RAID re-sync of the added drive. During re-sync, a RAID is not fully redundant. Whether your data is recoverable, and to what extent, may depend on just how badly failed drive 3 is. StephenB is quite good at helping others recover as much data as they can, so let him help you. But even if you succeed, you most likely are going to need to back up your data to another device so you can ultimately rebuild the volume from scratch. But you will then have a device you can use for continued backups. If the other 6TB drive is as old as the one that failed, you may want to consider leaving that one out in the rebuild.
Thank you Sandshark. When I do select the disk it does show the other four disks, and suggests they are all RAID'ed.
I haven't probed everything, but it the data I have looked for is there....... but I don't have a lot of confidence in the system!
But it does seem like I have 23T of data, across two volumes... so my soon-to-arrive 16T disk is not enough. Can I back up these two volumes to two different disks?
And what does it mean when it says that disk 1, 4, 5, 6 are inactive? They look active in Data-1 to me... it seems. I'm confused.
-- Malcolm
P.S. I saw advice elsewhere that Raid 6 is not a good solution for consumer disks this big. What should I use?
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