When you’re shopping for a portable drive, you need to keep a few things in mind. First, portable drives rarely offer data redundancy, so don’t expect to store sensitive or irreplaceable files on one (or at least plan to back up that data). Determine how you’ll use the drive, too, and evaluate whether you need superb speed or massive capacity. Of course, there’s also the expense to think about; to compare costs across different storage capacities, calculate the price per gigabyte.
Other considerations: A bus-powered drive operates on power from its data connection, so you don’t need to carry around a bulky power brick. A reliable manufacturer is a significant bonus, as well, and don’t forget about the product’s warranty—drives do fail, and sometimes you get stuck with a lemon.…