That would be how I interpret it, in essence, there's no fault, so there's nada to assert (deassert), and the disk is there (asserted)
it looks at the status criteria, and if it is true, that status is asserted (disk present), if it is false or there is an error, it is deasserted (disk fault)
There's no drive present in bays 3-8, so there's deassert on the fault (no disk to have a fault on) and deassert on disk presence because well, there's no drive present
I see you have an EMC tab in there, I am jealous you're in their timezone, they dont' have a lot of techs working in EU time it seems, when things go wrong