PS4 maximum internal HDD capacity

I was wondering, if does the internal HDD capacity stays the same ive heard about (max 2tb) or it has increased?

What is the maximum HDD internal capacity for a PS4? Nowadays, a 2tb HDD fills up quickly with mandatory installations and games that chew up to 75 gbs of space (DOOM).

Ive heard about external drives, but Im looking to upgrade my internal HDD.

Ive tempted to change my 2tb drive for this one: http://ift.tt/2h8aFYJ wich is 5tb but Im not sure at all if the ps4 can handle it as internal storage.

So if you guys can help me I would be very grateful.

Thanks.