I am researching implementing encryption in our enterprise. I am trying to understand how EFS and Bitlocker work together or sepoerately. In a case where your primary goal is to protect data, would you need both EFS and Bitlocker? If you encrypt the whole drive with Bitlocker, why would you still need the EFS system with all of the user interferance? When would you want to have both? Or is Bitlocker just the newer version/replacement product for encryption through Microsoft?