I would wish to share my knowledge with WD7500BPVT hard disk. It is a 750GB hard disk drive and I utilized it as outer backup for Mac with the utilize of enclosure. While utilizing, I have observed that it evers spin down later 8 seconds of inactivity. Later this whenever I test to access the hard disk drive, it takes 3 seconds to wake up from the spin down. It is really bothering. So I went to configure it utilizing wdidle3 tool but it did not help me much despite the successful message. But then I hanadled to perfect these issues utilizing WDIdleDisable and the tool CrystalDiskInfo.