Deep Freeze my ass
All this is doing is to create an image of the drive and restore it.
"Deep Freeze instantly protects and preserves baseline computer configurations. No matter what changes a user makes to a workstation, simply restart to eradicate all changes and reset the computer to its original state - right down to the last byte."
Plenty of free drive imaging software around like DriveImage XML -
http://www.runtime.org/dixml.htm - why pay for a puffed-up disk imager?
Restoring the image takes a while, but this is ideal for a classroom or
a cyber cafe where there is no data to protect. and you want to start each day (or week) fresh and clean.
Another (quicker and better) alternative is to run off a live CD!
So your data is on another drive and you're OK? No you're not. If you've been rooted its not easy to be sure exactly when. How trustworthy is your data if it's been in contact with a rooted OS? Not at all! You'll need to reimport all you data from backup and check it.
If a commercial system gets rooted the you wipe it and reinstall. A major pain. A baseline image may make it quicker but you'll still have to reinstall large chunks. A daily image including data sounds nice, but how do you know when you got rooted? By the time a system starts showing signs it's probably been owned for a long time. Which image is clean?
Recovering from a system compromise is something people write books about.
Your "tech" is using the right tool for the right job (though they're paying much more for it that they have to), but this sort of thing really isn't suitable for home use.