I know the need for WDIDLE on WD Green drives is an established fact for other computer applications (e.g.: server arrays) but I'm having a difficult time understanding why it is needed for Tivos. From what I gather, the default setting of the idle time is 8 seconds. Doesn't the Tivo 30 minute live TV buffer write to the drive more often than that? If so, why would the drive ever go idle?