InformIT: Building the Ultimate Virtual Lab for Free, for Fun, and for Profit, Part 1 > Why Virtual, and Why ESXi?
What can save you countless hours and dollars, and is even good for the environment? A free virtual lab that consolidates the hardware and power requirements of numerous systems into a single machine! In this two-part series, Seth Fogie gives you all the info you need to set up and build your own virtual lab — for free, with much fun, and potentially for profit.