If anyone else has reports on this, please specify if your machine is an authentic MacPro5,1 or if it was upgraded from a 4,1 to register/display as a MacPro5,1. Please also specify your SMC version and boot ROM version. Unsure if this is isolated to 4,1>5,1 machines or if it also happens on 5,1 machines. Fairly positive the client machine above was a 4,1>5,1.
Does not excuse the poor RAID support in Mojave for even internal direct SATA connected drives, but may help to explain issues with internal RAID controllers.
Does not excuse the poor RAID support in Mojave for even internal direct SATA connected drives, but may help to explain issues with internal RAID controllers.