Speaking in the pages of Japanese magazine Famitsu, Chatani said that a strategy had "yet to be decided", but added that he felt people would want to upgrade to higher capacity drives - the implication being that Sony would shy away from making the hard disk unit an obligatory part of the PlayStation 3 launch package. Sony has previously identified a detachable 2.5" (laptop size) hard disk drive as an optional storage peripheral, and it is believed this will slot inside a small rectangular port located on the underside of the unit. However the company has never said that a hard disk would be bundled with the unit at launch, and Chatani's comments this month seem to suggest it's erring toward not including one - and perhaps offering the peripheral optionally in the same way it currently sells Memory Card units separately from PlayStation 2.