Excerpt: The Hitachi Deskstar 7K2000 isn't the first 2TB 7,200rpm internal hard disk we've seen, but it is the cheapest at just over £100. Performance was a mixed bag. It was fast at reading files, but slower at writing them. Large files were read at a high speed of 106.2MB/s but were written at 75.8MB/s. Small files were read at 46.8MB/s and written at 18MB/s.