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Preface xxvii

■ Chapters 6 through 11 look at some of the technical equipment and
strategies for saving energy in IT. Chapters 9 through 11, the case study
chapters, are intended to emphasize the “lessons learned” aspect of green
IT. The case studies include universities, energy utilities, and large and
small companies and span the globe to give guidance based on country or
regional green regulations and issues.
■ Chapter 12, “The Future of Green IT for Corporations,” is the summary
chapter and also takes a look at the future. This material should be of
interest to all readers.
■ The appendixes give details on checklists for green IT, tools for power
and cooling estimates, emerging technologies such as grid and cloud
computing, background information on the pros and cons of different
power-generation methods, and information on worldwide electricity
average prices for IT. Cloud computing, discussed in detail in Appendix
B, is a significant new technology for green IT. The recent push for “pri-
vate cloud computing” will have an impact on all of our data centers.
■ The Glossary following the appendixes will help you with many terms
used in green IT. ptg

This book was written to enable you to go directly to a chapter or sec-
tion of interest and begin reading without having first read all the previ-
ous chapters. The intent is to make the content of each chapter as
independently intelligible as possible.
Green IT is and will continue to be an interesting and hot topic
worldwide. Enjoy this book. It was a pleasure to write.

—John Lamb