* Resource virtualization is great, but requires different management thinking

By Andreas M. Antonopoulos, Network World, 09/20/05

Data center managers have already discovered that consolidation and virtualization of data center resources can produce significant ROI. Part of that return is directly attributed to increased utilization of the resources.

If you can use a single physical server to run several operating system images and applications, you can postpone purchases of new servers, sometimes to the tune of millions of dollars.