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2: The Basics of Green IT 21

Diagnose
Get the facts to understand
your energy use and
opportunities for
improvement
Manage and
Build Measure
Plan, build, and Seize control
upgrade to with energy
energy efficient Green Data management
data centers Center software

Virtualize Cool
Implement Use innovative
virtualization and cooling solutions
other innovative
technologies

ptg
Source: IBM Big Green Team

Figure 2.1 IBM Big Green approach to data center energy efficiency

Five-Step Process Used for Data Center Energy Efficiency
As indicated in Figure 2.1, the five-step process is to diagnose, man-
age and measure, use energy-efficient cooling, virtualize, and build new
or upgrade facilities when feasible.

Diagnose the Opportunities and Problems
This step is to perform a data-center energy-efficiency assessment.
Many data center energy consultants bring in tools such as Mobile
Measurement Technology (MMT) to look at “hot spots” in the data cen-
ter and areas where cold and hot air mix too early and thereby waste
energy. The assessment should include a list of unused IT equipment
that can be turned off. In addition, the diagnostic phase can help
encourage organizations to retire unused software applications and focus
on adopting more effective software that requires fewer CPU cycles. A
typical x86 server consumes between 30 percent and 40 percent of its