"Virtualization is set to become a key requirement for every server in the data center. This trend is a direct consequence of an industry-wide focus on the need to reduce the Total Cost of Operation (TCO) of enterprise computing infrastructure. In spite of the widespread adoption of relatively cheap, industry standard x86-based servers, enterprises have seen costs and complexity escalate rapidly.
"Today, for every dollar spent on computing hardware, as many as five dollars are spent on lifetime costs--support, maintenance, and software licenses..."