Drive health, disable spindown on external drives, esp WD

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.I have a 4 TB WD Elements desktop external drive. I think this drive is set to pose downspin down after a period of non-use, correct? If so, is it possible to turn off that capability?