DarkLogix Texan and Proud Premium join:2008-10-23 Baytown, TX kudos:3
If you shut down completely it'll still turn it off, but the drive won't (in the case of MHDD's) spin down. while the computer is on.
I think putting the computer in sleep mode would still turn it off.
I always set this setting because with a MHDD I don't want to have to wait on spin up to use my computer again, and I figure for a SSD it'd be more ideal for the drive to be as ready as possible.
Though I always kinda figured that a SSD wouldn't really do much when windows tells it to "spin down" -- »Death Star Petition