I recently replaced the external HDD that is connected to my (headless) Mac Mini and which I use as media center, with a WD 6TB Mybook (USB 3.0). The external HDD is used to store my Itunes Library.
The Mac Mini runs OSX Mavericks 10.9.5 and Itunes 11.4 (I did not upgrade to Itunes 12 because I...