There's good news is the world of traditional hard drives. First, prices are falling dramatically, with 2 terabyte (TB) models now retailing for between 80 and 100 dollars online. What's more, the 2-terabyte limit is being broken as well. Next year, expect manufacturers to release 3-TB models.
Some already do. To use a 3-TB drive on a 32-bit operating system, though, you will need to install a special driver, typically supplied with the drive.