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The Greening of IT
xviii How Companies Can Make a Difference for the Environment

Chapter 9 ■ Green IT Case Studies for Energy Utilities 147
The Environmentally Friendly Aspect of
Green Data Centers 148
Pacific Gas and Electric Company (PG&E) 148
PG&E Energy-Efficiency Programs 149
Electric Utility in the Chicago Area 150
Data Center Energy Efficiency Process Steps 150
Additional Energy Efficiency for the Energy Utility’s
Data Center 154
Next Steps for This Energy Utility’s Green Data Centers 155
The Energy Impact of the UPS 155
Chapter Summary and Conclusions 156

Chapter 10 ■ Green IT Case Studies for Universities and a
Large Company 157
Bryant University Scalable Modular Approach to a
Green Data Center 158 ptg
Summary, Bryant University Scalable Modular Data Center 159
Bryant University Modular Data Center Design Details 160
Other Modular and Container Data Center Designs:
Google, Sun, Rackable 162
Columbia University Green IT and New York City
Green Plan 163
Columbia University’s Analysis and Plan for Creating a
Green Data Center 164
High Performance Computing (HPC) at a
Large Research University 165
Green IT Techniques to Be Analyzed and Verified 167
Columbia’s Green IT Test Plan 168
Columbia University Green IT Plan Summary 169
Lexington, Kentucky, Large (61KSF) Data Center 169
A Five-Step Approach for an Energy-Efficient Data Center 171
Step 1. Diagnose 172
Step 2. Build 173
Step 3. Virtualize 174
Step 4. Manage and Measure 177
Step 5. Cool 178