TrustedReviews have looked at the Seagate 500GB eSATA External Hard Disk
External hard disks are useful little items. If you like the idea of backing up large chunks of data from multiple computers, having a large capacity hard disk that you can carry around with you is a great solution. Despite the fact that I think NAS appliances are the best option for external storage in most cases, a plug-in external hard disk is a far easier solution for the novice, and you can transport it between locations.Seagate 500GB eSATA External Hard Disk Review