Also seeing Controller ID: 0 Unrecoverable medium error during rebuild: PD -:-:2 Location 0x8f589b26 and Controller ID: 0 Unrecoverable medium error during rebuild: PD 0 Location 0x8f589b26 so presumably there is a disk controller or disk error. Would both disks show an error like this in a rebuild if it was only one causing the problem?