Yes, I know RAID is not backup. Everything that is irreplaceable is backed up using the 123 rule. This mistake will just cost me many hours reinstalling containers and recovering from backups.
My cache pool consists of two sata SSDs in RAID 1. I have been having an issue where one of the cache drives kept having errors in the log. So, I swapped in a m.2 drive I have and let that run for a bit until I can get around to looking more into it. I found some forum posts that suggest that type of error could be caused by the sata controller on the motherboard. My attempted fix was to use a mini-SAS to 4x sata cable with the extra slot on my LSI card and then immediately swap the "bad" sata SSD into the cache pool. Since it is RAID 1, it should just rebuilt as it did when I swapped in the m.2. Except it didn't. It didn't rebuild because unraid decided to change the ID of drive one (the good one) from sdn to sdc. I didn't notice that at first, so I started up the array. After swapping the drives back to the motherboard sata controller, it went back to sdn. But still shows up as unmountable. Nothing has been formatted. I tried using the new config tool in unraid, but that didn't help either.
Any ideas on how to get that data back? I am a noob, so I hope I explained everything well enough and that I am just missing some simple step.