Summary: Re: Spin down HDD after disk sync or before power off

[Dag-Erling Smørgrav]

Alexander Best <arundel at freebsd.org> writes:
> since there seems no way to distinguish between these two states in ATA(4) it's
> probably better to leave it as it is, since doing spin downs upon reboot might
> be even worse than not doing spindowns upon shutdown.

No.  Where did you get that idea?  To repeat what I've said before -
several times - in this thread, a modern disk drive can handle hundreds
of thousands of controlled unloads but only a few hundred emergency
unloads. Given the choice between "never spin down" and "always spin
down", the safe alternative is "always spin down".

DES
-- 
Dag-Erling Smørgrav - des at des.no