External HDD Auto Shutdown?

Hey guys I own this hard drive I was wondering if it would be even possible for me to get a 16 ft. long USB cable and put this thing in my closet and have it auto shutdown when I sleep/turn off my computer and to startup again when it wakes from sleep or starts up. The reason I want to do this is the HDD is a little loud, not too bad but if I could do that it would be great!

The cord length shouldn't be a problem and the drive should shut itself down after a long period of inactivity; at least my WD My Book drives shut themselves down. If they don't maybe you could just unplug it yourself or dismounting the drive might cause it to shut down.

My HDD has a switch for on and off does the MyBook?