ReadyNAS Duo V2 (RAIDiator 5.3.13) disliking USB 3 drive that has been plugged into it for years.
For years (literally) the RAID has had 2 3TB and 1 3TB external HDD, all 3 the same model, as of last week, when the backup that was powering the unit (but not connected due to interface issues with it), went on battery and the battery failed instantly so off went everything. I believe it happened then but I could be wrong as the 3rd drive in the back (USB 3.0) is used as a redundant backup of the RAID monthly, well, when I went to do so, it complained it couldn't find it, yet, it was plugged in, on and running. So I figured something was wrong with the drive, so I unplugged it from the back of the RAID and plugged it into a laptop (Windows 10) and it found the drive no troubles. Thought maybe S.M.A.R.T. was having issues, so plugged it directly into a computer motherboard and no issues with S.M.A.R.T. Did a full drive scan (took hours), nothing wrong. So, plugged the drive back into the RAID in the back, nothing, restarted the RAID, nothing, swapped ports and repeated, nothing, so both top and bottom USB 3 won't see the drive, but they *do* see the replacement battery backup just fine. So, I decided to plug in a brand new USB 3 SS 4TB portable drive (Laptop size, USB powered), it didn't see it, but I remember that that is normal with new drives on this so a reboot is needed. Upon reboot, the new drive (USB_HDD_4) is there, ready for use, I (ejected it, unpluged it, plugged it in) x 3 times, no issues. Alright, plugged the original 3TB drive (USB_HDD_3) back in and nothing, not even after a restart. BUT, it *does* work fine in the USB 2.0 in front. I even went to trying another box for the drive, made no difference. My only thought is the RAID marked something on USB_HDD_3 to denote the device doesn't work on USB3, but there doesn't seem to be a way to remove it from that list so I can reattach it.
Anyone have any thoughts? A shame to waste a perfectly good drive just because the RAID thinks there is a problem with it when there isn't.