FreeBSD: not waking up screws after spin-down

Question

IDE

Home file server, fryakha 8.2, in order to save on electricity - LVM disks of the array (debian heritage) ad1,2,3 spindown by atacontrol adN 600.

For two weeks of flight, the ad2 / ad3 screws did not wake up from hibernation four times already - and hung the car tightly comfortably shining LED HDD.

The last thing in the log is: The server was nearby, there was complete silence in the room. When contacting the server - once they tried promotion, everything hung on that. Atacontrol has already been disabled. Tell me, what is the rake? Is it possible in another way, for example, through apm, to stop on idle and start on access screws?
Apr 12 05:22:00 central kernel: ad2: request while spun down, starting.
Apr 12 05:22:00 central kernel: ad3: request while spun down, starting.