"Computer stores are chock-full of all manner of backup software
and network storage appliances of varying quality, usefulness, and
ease of use. Do you really need some expensive commercial product?
Probably not. Backing up Linux/UNIX systems is easy, and *nix comes
with everything you need. Backing up Windows systems can get
expensive, what with all those per-user and concurrent and
per-machine blah blah licensing, and cross-platform backups can
drive even strong admins to develop substance abuse habits. But
don't run out and start one just yet, even though you'll be able to
afford it, because this two-part series is going to show you how to
perform the two primary types of backups the easy and cheap way:
data files on a mixed LAN, and custom operating system images for
fast bare-metal restores..."