Hello, I have a detected a strange issue with FreeBSD 11.4 and the Adaptec 8405. After the upgrade from 11.3 to 11.4. We have lost the disk on slot 14. A replacement of the RAID controller or the drives has not solved the issue. The drive was swichted into the missing state again. It seems like the upgrade have modified the RAID meta data of the drives. Regards Michél