@Melonlity -- That is true, but some people like those cloning machines for backup because they can be located off site.
Here's what I mean. Let's say you've got a system that clones drives for you. It's right next to your computer and has all of your files backed up. That is a great system unless the building catches on fire or something else catastrophic happens. The original computer and the backup drive(s) could easily be destroyed.
Now, take that off site backup. It is fine if the original computer is destroyed in a fire.