Profyle creates mirror systems, not just the software. They have complete
software and hardware systems for doing mirror backups. The drives range from
100MB to 1.2GB. Currently, Profyle has no U.S. distribution. For more
details, search the Technical Info library under "Profyle" and "Natural
Intelligence."
A similar type of backup utility was recently announced. Natural Intelligence
publishes a product called "Shadow", which does automatic backups.
Shadow periodically copies the documents that have changed since they were last
backed up. Shadow can back up onto any kind of disk, network server, or
Finder-mountable tape drive.