What is virtualization? Summary: Data centers are commonly filled with large numbers of servers that require a tremendous amount of time and money to maintain. Dan Chu of VMware shows how virtualization can optimize fewer servers to run at higher performance levels. April 6, 2006 -- 23:05 GMT (16:05 PDT) Loading... Please wait. Topics: Servers, CXO, Data Centers, Hardware, Storage, Virtualization, IT Employment Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.