It states the same sdb, sdc, sdd and sde. But it also shows sda - which is a Samsung SSD running the OMV OS.
I would need to open the machine to check how many hard drives I actually put in there. I cannot recall. Is there any other way to discover the missing disks (if any)?
And, No..I don't have a backup... and yes, I read your signature..."Raid is not a backup!"...