"It may surprise you to know that virtualization existed on Mainframes for almost 3 decades before it existed on any other platform. As I was researching a new virtualization project involving IBM System z, z/VM, and Linux, I realized that we’ve come full circle in computing -- from Mainframes and dumb terminals to the wonderful world of mid-range computers, departmental servers, and heavy desktops back to those dinosaur days of yesteryear of Mainframes and dumb terminals. Could it be true that we are returning to our roots as mere users on behemoth systems where an administrator allocates a virtual resource slice to us instead of a complete physical system with which to work? The answer is yes. The answer is also no."
