LONG VERSION: Had a long working EX4100 with four drives, all unencrypted JBOD (volumes 1-4). Replaced one drive with a higher capacity drive and brought it up fine as unencrypted JBOD (also as volume_4, replacing prior volume_4 on removed drive). Copied all on volumes 2 & 3 onto new shares on volume_4. Deleted everything on volume_2 and tried to convert it to an encrypted drive/volume. Stupidly I did this with drives/volumes 1, 3, and 4 still in the EX4100 at the same time – and things went catastrophically wrong in many ways.
Note, started with all JBOD and wanted all JBOD. In Storage/RAID/RAID Volume clicked Set Up RAID Mode (necessary even when all one wants is JBOD), clicked the padlock icon on volume_2 only and clicked Next. The EX4100 performed a drive test on all four drives. OK, I have seen it do that before. But then it proceeded to format volume_1! Not volume_2! In fact, from the messaging it may have intended to format all four drives/volumes. When I realized it was working on volume_1, rather than volume_2 which is all it should have been working on, I cut the power (there is no cancel button).
When I powered the EX4100 back on ALL my shares were gone, including those on volumes 3 & 4. Checking further, my single app (Twonky Server) is also now missing (oddly may be relevant, see below).
I started with drives 1-4, and replaced #4 (call it “old-4” and the new drive “new-4”), so drives 1-3 and new-4 were in the EX4100 when things went wrong. Here is what I have tried so far, after I pulled all the drives:
Put in only drive 3 and powered up. Storage/RAID/RAID Profile shows no volumes and Storage/Disk Status/Disk Profile shows Healthy and …/System Disks shows Drive3 Good, but Shares and Apps show none.
Put in only drive old-4 and powered up. Storage/RAID/RAID Profile shows volume_4; Storage/Disk Status/Disk Profile shows Healthy and …/System Disks shows Drive4 Good; Shares shows Private4 (as expected); and Apps still shows none.
Put in drive 3 with old-4 and powered up. Got a RAID Roaming window saying “This volume is roaming from another WD My Cloud EX4100 (not created on this system). Click OK to integrate it into your current WD My Cloud EX4100. If you do not integrate it, you risk losing data if your volume becomes degraded. …” Looked safe so I clicked OK, and got an “Updating” msg for a few seconds. Storage/RAID/RAID Profile shows only volume_4 (active and healthy); Storage/Disk Status/Disk Profile shows Healthy but System Disks shows “Please wait…” msg with an animated icon but an hour later no change.
Tried to reinstall Twonky Server and get “Unable to install app. There is not enough storage space in the My Cloud system. Please free up storage space and try again.” This seems significant to me of there being a higher level problem in my EX4100 than just a disk access malfunction.
QUESTIONS:
(1) Under Settings/Utilities/Restore To Default I see choices that may clear up the memory issue. Will using these affect my drive/volume/share recovery options later?
(2) Can shares be restored/remounted etc.
(3) What disk format type does the EX4100 use?
(4) What utility programs / apps can one use on EX4100 disks? Specifically to access what is a hopefully an un-corrupted volume_4 on disk new-4, and to recover whatever is possible from likely corrupted volume_1 on disk 1 (the format got to 8% before I realized it was occurring on the wrong disk and cut power)?
TY in advance.