No matter which model of the PLAYSTATION 3 you've got - 20GB, 40GB, 60GB, or 80GB - music, video, and gaming download fiends will find a way to fill up their hard disk drive. Fortunately, the PS3 doesn't require some hard-to-find proprietary HDD - you can swap it out yourself with the kind of drive found at most electronics retailers and on the internet.
The type of internal 2.5? drives that work with the PS3 top out at about 250gb. So if you're looking for more storage and/or don't wanna bother with opening up your box, 500gb external USB drives are also readily available.