First off, I don't have any experience in IT.
At my job we are unable to pay for IT support so we had to cancel with the company we were using. So therefore, my boss naturally said, "Hey let's use the CNC guy (i.e. Me) who's leaving in two months to go back to school for electrical engineering to do it." I have no problem doing this because I hopefully will learn something new by it and because I care about this company. What I want to find is a way to clone all the HDD's on the computers at work in to ISO like files on my and the owner's 4 TB HDDs for safe keeping. All of these systems are either working on windows 7 or XP. My theory is if any of these systems stop working I can pop in a new HDD and clone over the old from the back up.
So what I need to know is:
A) Is my theory even possible.
B) What do I need to do and/or what software do I need to do it.
Thank you guys so much for helping if you can.