"Western Digital today introduced its smaller, sleeker My Book(TM) external storage solutions: My Book Home Edition(TM), My Book Office Edition(TM) and My Book Essential Edition(TM). Ranging from 320 GB to 1 TB (terabyte), the new My Book models were designed with specific users in mind. Home users will appreciate the automatic and continuous backup of their precious memories on the My Book Home Edition. Office users will rely on the remote access and sharing capabilities of the My Book Office Edition. My Book Essential Edition meets the needs of users who seek simple, instant storage."Western Digital has refreshed their product line of external drives. I really like the addition of the automatic continuous backup feature, since experience has shown that if you rely on the user to back up their computer, it won't get done, and even if they do it regularly, a disk failure can still cause data loss between backups.