Although I realize the difference, I found an article from 4 years ago (2007) where Hitachi released a 1 TB hard drive aimed for consumers (there were others at the time as well): <a href="http://www.pcworld.com/article/128400/hitachi_introduces_1terabyte_hard_drive.html" rel="nofollow">http://www.pcworld.com/article/128400/hitachi_introduces_1te...</a> . Definitely an interesting read as it provides some context at the state of data relative to 2007.