Normal 60GB HDD with Sony OS + 500GB external HDD which i use with my main comp as-well.
(Just a reminder that the HDD has to be in FAT32 format).
End of 2014 Hardware Predictions (03/03/14)
PlayStation 4: 12-15million
Xbox One: 7-10 million
Wii U: 8-9 million (Changed 01/04/2014 from 7-9 --> 8-9 million)