
From Energy Avoidance to Efficiency 39
2.4 From Energy Avoidance to Efficiency
Given specific goals, requirements, or objectives, shifting to an energy-effi-
cient model can either reduce costs or enable new IT resources to be
installed within an existing PCFE footprint. Cost reductions can be in the
form of reducing the number of new servers and associated power and cool-
ing costs. An enabling growth and productivity example is to increase the
performance and capacity, or the ability to do more work faster and store
more information in the same PCFE footprint. Depending on current or
anticipated future power and/or cooling challenges, several approaches ...