Virtualization technology has tremendous potential to help control the spiraling cost of IT, but virtualization projects often don't deliver the expected cost savings. The problem is not the concept of virtualization, but the lack of a management strategy that addresses all the costs that result from increasing the number of applications that share each server. A comprehensive virtualization management strategy that addresses hardware, software, power, real estate, and administration costs is vital to realizing the costsaving potential of virtualization technology....