If you’ve got a fever that can only be cured by more hard drive space, Samsung’s your doctor. The megacorp has today unveiled two new additions to its S Series external hard drive range over at IFA in Germany, and both go above and beyond the call of duty in terms of capacity. Both the 3.5″ 2TB S3 Station and the 640GB 2.5″ S2 portable made their debut today on the big stage, with each stepping up their respective games in terms of gigabytes. The 640GB device really takes a big leap forward given that it’s