We live in a world positively soaked in data nowadays. Fortunately, the capacity to store that data has gotten bigger in volume, smaller in physical size, and cheaper per gigabyte as time progresses. Gone are the days where you'd have to lug a Zip disk around (remember those?) or stick your iPod into disk mode. At worst, you're carrying a USB drive with you -- though really, you should be relying on the cloud for by now. The issue is figuring out just what you're going to be keeping up there.