Dell Inspiron 15-3567 HD swap?

I've had this laptop for about 6 months and am almost out of space on my HD (1TB) can I add or swap for a 2 TB HD? I have two external WD hard drives a 2 TB and a 4 but really want more space in my machine. The reason I'm using so much hard drive space is the number of digital SLR pics and videos. It would be great if I can somehow add to what I have .. thanks, Blair 

BTW how are the Dell laptops sold on Amazon? I saw a 15.6 inch Inspiron 15 7000 Series with a one TB SSD and a two TB 5400 RPM HD but no optical drive. It also has a faster CPU than this one 4 GHz vs 2 and double the memory of this one with just 8 GB. When I bought this laptop I only planed on still photos. again many thanks, Blair..