The rMBP has 512 on the storage. Its bootcamped with win 10, so the Mac side has about 100gb that is used, mostly iTunes content. The rest of my movies and tv shows are on the iPad. I have about 50 out of 128gb left on the iPad. So if I get rid of the MacBook than I'm going to probably have to put everything on the iPad since more than likely the seagate won't work with the iPad Pro.
I understand, and thank you for replying....