Although the worldwide economy may be shrinking, our needs as consumers to store large amounts of data continues to grow at a breakneck pace. Whereas only a few years ago it was uncommon for most PC users to have more than just a few digital images or media files, today virtually every aspect of our lives has some sort of digital component. Our mobile phones now take pictures, shoot video, record audio and handle e-mail. it seems like everyone has a vast MP3 collection. We all create numerous documents, presentations,