I currently have a Time Capsule, but I want to get away from that internal storage... I have a Mac Pro that I am thinking of installing a WD Black 2TB into as a backup drive... Backing up my three internal drives and a MacBook Pro. I would like to purchase the AirPort Extreme Base Station (Not Time Capsule) and backup my MacBook Pro to my Mac Pro's WD 2TB Internal HD using Time Machine... Would I be able to do this? My Mac Pro is ALWAYS on. If I can do this, how easy/difficult would the setup be? Thanks.