Maxtor has a new version of their external hard disk and backup solution, the OneTouch II. Available in 250GB or 300GB versions (7200RPM, 16MB cache, FireWire, USB 2.0), the new drives will come bundled with Dantz Retrospect backup software that should allow you to retain a series of incremental backups with history, so that if you’d like to retrieve an older version of a document – like say from a couple weeks back – you can pull up the older version even if you’ve made multiple changes. As the drive fills up, it will start axing older versions to free up space.
There’s also a DriveLock feature which password protects the contents of the drive if it is powered down, but it’s not clear if this could just be defeated by removing the drive itself from the chassis or if all the data is saved in an encrypted form at all times (I suspect the former).