[quote name='Strell']YOu have two options:
1) Buy an all-in-one external hard drive. Western Digital and Seagate make these. They tend to not have onboard cooling and thus I do not suggest them.
2) You go to newegg.com, search for "Venus," and then get a Venus hard drive enclosure, as it has onboard cooling. Then you go buy as big of a Seagate hard drive as you can afford. This allows you to get quality components fairly cheap.[/QUOTE]
Cooling should not be an issue for any recent (last two years) design from a major brand. Compared to the interior of a PC there just isn't that much cooling issue, except perhaps at the height of summer weather. The only external hard drive failure I've ever had, aside from drives that were entirely kaput, was due to LOW temperature. A Seagate 2.5" bus powered 100GB unit. Made horrible noises and just wouldn't work. The next time I tried it, after a few days indoors instead of being kept in my car, it was fine and has been so ever since. Apparent'y it got cold enough to turn the lubricant on the drive motor bearings to semi-frozen sludge.