HDD: WD Green head parcking timeout setting under FreeBSD?

[Lev Serebryakov]

Hello, Freebsd-hardware.

  WD Cavair Green HDDs knows to have very short heads parking time out
(about 8 seconds), which leads to fast HDD resource exhaustion.

  WD has utility (wdidle.exe) to set larger idle time. But it is
DOS-based. Maybe, here is way to send this vendor command under
FreeBSD, without rebooting?

 I use ahci.ko.

-- 
// Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>