How to set HDD spindown to 10 seconds when not in

spin wdI’d like to know if there is a setting within Windows 7 that will allow the 2 external hard drives in my Western Dital My Book DuoMirror to stay spinning longer.Find the rht software for your WD, Western Dital, SanDisk, or WD_BLACK device. Download and access additional features on your personal storage device.