Details

Harnessing Green IT

Principles and Practices
IEEE Press 1. Aufl.

von: San Murugesan, G. R. Gangadharan
82,99 €
Verlag:	Wiley
Format:	PDF
Veröffentl.:	31.08.2012
ISBN/EAN:	9781118306512
Sprache:	englisch
Anzahl Seiten:	432

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Beschreibungen

Titelbeschreibung

“Ultimately, this is a remarkable book, a practical testimonial, and a comprehensive bibliography rolled into one. It is a single, bright sword cut across the various murky green IT topics. And if my mistakes and lessons learned through the green IT journey are any indication, this book will be used every day by folks interested in greening IT.” — Simon Y. Liu, Ph.D. & Ed.D., Editor-in-Chief, IT Professional Magazine, IEEE Computer Society, Director, U.S. National Agricultural Library This book presents a holistic perspective on Green IT by discussing its various facets and showing how to strategically embrace it Harnessing Green IT: Principles and Practices examines various ways of making computing and information systems greener – environmentally sustainable -, as well as several means of using Information Technology (IT) as a tool and an enabler to improve the environmental sustainability. The book focuses on both greening of IT and greening by IT – complimentary approaches to attaining environmental sustainability. In a single volume, it comprehensively covers several key aspects of Green IT - green technologies, design, standards, maturity models, strategies and adoption -, and presents a clear approach to greening IT encompassing green use, green disposal, green design, and green manufacturing. It also illustrates how to strategically apply green IT in practice in several areas. Key Features: <ul> <li>Presents a comprehensive coverage of key topics of importance and practical relevance - green technologies, design, standards, maturity models, strategies and adoption</li> <li>Highlights several useful approaches to embracing green IT in several areas</li> <li>Features chapters written by accomplished experts from industry and academia who have first-hand knowledge and expertise in specific areas of green IT</li> <li>Presents a set of review and discussion questions for each chapter that will help the readers to examine and explore the green IT domain further</li> <li>Includes a companion website providing resources for further information and presentation slides</li> </ul> This book will be an invaluable resource for IT Professionals, academics, students, researchers, project leaders/managers, IT business executives, CIOs, CTOs and anyone interested in Green IT and harnessing it to enhance our environment.

Inhaltsverzeichnis

About the Editors xix About the Authors xxi Foreword xxix Preface xxxi Acknowledgements xxxv 1 Green IT: An Overview 1 San Murugesan and G.R. Gangadharan Key Points 1 1.1 Introduction 1 1.2 Environmental Concerns and Sustainable Development 2 1.2.1 The Inconvenient Truth 3 1.2.2 Sustainable Development 4 1.2.3 Why Should You Go Green? 4 1.3 Environmental Impacts of IT 4 1.4 Green IT 5 1.4.1 OCED Green IT Framework 6 1.4.2 Green IT 1.0 and 2.0 7 1.5 Holistic Approach to Greening IT 7 1.5.1 Greening Computer’s Entire Life Cycle 8 1.5.2 The Three Rs of Green IT 9 1.6 Greening IT 10 1.6.1 Green PCs, Notebooks and Servers 10 1.6.2 Green Data Centres 10 1.6.3 Green Cloud Computing 12 1.6.4 Green Data Storage 12 1.6.5 Green Software 13 1.6.6 Green Networking and Communications 13 1.7 Applying IT for Enhancing Environmental Sustainability 14 1.8 Green IT Standards and Eco-Labelling of IT 15 1.9 Enterprise Green IT Strategy 15 1.9.1 Green Washing 17 1.10 Green IT: Burden or Opportunity? 17 1.11 Conclusion 18 Review Questions 19 Discussion Questions 19 References 19 Further Reading and Useful Web Sites 20 2 Green Devices and Hardware 23 Ashok Pon Kumar and Sateesh S. Kannegala Key Points 23 2.1 Introduction 23 2.2 Life Cycle of a Device or Hardware 24 2.2.1 Design 25 2.2.2 Manufacturing 26 2.2.3 Packaging and Transportation 28 2.2.4 Use 29 2.3 Reuse, Recycle and Dispose 34 2.4 Conclusions 36 Review Questions 37 Discussion Questions 37 References 37 3 Green Software 39 Bob Steigerwald and Abhishek Agrawal Key Points 39 3.1 Introduction 39 3.1.1 Processor Power States 40 3.2 Energy-Saving Software Techniques 41 3.2.1 Computational Efficiency 42 3.2.2 Data Efficiency 45 3.2.3 Context Awareness 49 3.2.4 Idle Efficiency 52 3.3 Evaluating and Measuring Software Impact to Platform Power 55 3.3.1 Fluke NetDAQ® (Networked Data Acquisition Unit) 55 3.3.2 Software Tools 57 3.4 Summary 59 Acknowledgements 60 Review Questions 61 Discussion Questions 61 References 61 Further Reading 62 4 Sustainable Software Development 63 Felipe Albertao Key Points 63 4.1 Introduction 63 4.2 Current Practices 64 4.3 Sustainable Software 65 4.4 Software Sustainability Attributes 66 4.5 Software Sustainability Metrics 68 4.5.1 Modifiability and Reusability 68 4.5.2 Portability 70 4.5.3 Supportability 71 4.5.4 Performance 71 4.5.5 Dependability 71 4.5.6 Usability 71 4.5.7 Accessibility 72 4.5.8 Predictability 72 4.5.9 Efficiency 73 4.5.10 Project’s Carbon Footprint 73 4.6 Sustainable Software Methodology 73 4.6.1 Collecting Metrics 73 4.6.2 Code Metrics Tools 74 4.6.3 Simplified Usability Study 75 4.6.4 Platform Analysis 76 4.6.5 Existing Project Statistics 77 4.7 Defining Actions 77 4.8 Case Study 78 4.8.1 Modifiability and Reusability 78 4.8.2 Portability 78 4.8.3 Supportability 79 4.8.4 Performance 79 4.8.5 Dependability 79 4.8.6 Usability 79 4.8.7 Accessibility 79 4.8.8 Predictability 81 4.8.9 Efficiency 81 4.8.10 Project’s Footprint 81 4.8.11 Results and Actions 81 4.9 Conclusions 82 Review Questions 82 Discussion Questions 82 References 83 5 Green Data Centres 85 Charles G. Sheridan, Keith A. Ellis, Enrique G. Castro-Leon and Christopher P. Fowler Key Points 85 5.1 Data Centres and Associated Energy Challenges 85 5.2 Data Centre IT Infrastructure 87 5.2.1 Servers 87 5.2.2 Networking 89 5.2.3 Storage 89 5.2.4 IT Platform Innovation 90 5.3 Data Centre Facility Infrastructure: Implications for Energy Efficiency 92 5.3.1 Power System 92 5.3.2 Cooling 95 5.3.3 Facilities Infrastructure Management 97 5.4 IT Infrastructure Management 98 5.4.1 Server Power 98 5.4.2 Consolidation 101 5.4.3 Virtualization 104 5.5 Green Data Centre Metrics 106 5.5.1 PUE and DCiE 106 5.5.2 Power versus Energy Consumption 107 5.6 Data Centre Management Strategies: A Case Study 108 5.6.1 Challenges 108 5.6.2 Tested Solution 108 5.6.3 Impact 108 5.6.4 A Thorough Evaluation 109 5.7 Conclusions 110 Review Questions 111 Discussion Questions 111 References 111 Further Reading and Useful Web Sites 112 6 Green Data Storage 113 Pin Zhou and Nagapramod Mandagere Key Points 113 6.1 Introduction 113 6.2 Storage Media Power Characteristics 115 6.2.1 Hard Disks 115 6.2.2 Magnetic Tapes 117 6.2.3 Solid-State Drives (SSDs) 117 6.3 Energy Management Techniques for Hard Disks 118 6.3.1 State Transitioning 118 6.3.2 Caching 118 6.3.3 Dynamic RPM 119 6.4 System-Level Energy Management 119 6.4.1 RAID with Power Awareness 120 6.4.2 Power-Aware Data Layout 120 6.4.3 Hierarchical Storage Management 121 6.4.4 Storage Virtualization 122 6.4.5 Cloud Storage 123 6.5 Summary and Research Areas 124 Review Questions 124 Discussion Questions 124 References 124 7 Green Networks and Communications 127 Cathryn Peoples, Gerard Parr, Sally McClean and Philip Morrow Key Points 127 7.1 Introduction 127 7.1.1 Green Network Communications and Management: Background 128 7.1.2 The Challenge of Next-Generation Networks 129 7.1.3 Benefits of Energy-Efficient Networks 130 7.1.4 Objectives of Green Networking 131 7.1.5 Core Components in Green-Networking Technology 132 7.2 Objectives of Green Network Protocols 132 7.2.1 Energy-Optimizing Protocol Design 133 7.2.2 Bit Costs Associated with Network Communication Protocols 135 7.2.3 Objectives of Green Network Protocols 138 7.3 Green Network Protocols and Standards 140 7.3.1 Strategies to Reduce Carbon Emissions 140 7.3.2 Contributions from the EMAN Working Group 140 7.3.3 Contributions from Standardization Bodies 142 7.3.4 Context Detail to Drive Energy Efficiency 142 7.4 Conclusions 145 Acknowledgements 145 Review Questions 145 Discussion Questions 146 References 146 Further Reading and Useful Web Sites 148 8 Enterprise Green IT Strategy 149 Bhuvan Unhelkar Key Points 149 8.1 Introduction 149 8.2 Approaching Green IT Strategies 151 8.3 Business Drivers of Green IT Strategy 153 8.3.1 Cost Reduction 153 8.3.2 Demands from Legal and Regulatory Requirements 154 8.3.3 Sociocultural and Political Pressure 155 8.3.4 Enlightened Self-Interest 155 8.3.5 Collaborative Business Ecosystem 155 8.3.6 New Market Opportunities 156 8.4 Business Dimensions for Green IT Transformation 156 8.4.1 Economy 157 8.4.2 Technology 157 8.4.3 Process 158 8.4.4 People 158 8.5 Organizational Considerations in a Green IT Strategy 160 8.6 Steps in Developing a Green IT Strategy 161 8.7 Metrics and Measurements in Green Strategies 163 8.8 Conclusions 164 Review Questions 164 Discussion Questions 164 References 164 9 Sustainable Information Systems and Green Metrics 167 Edward Curry and Brian Donnellan Key Points 167 9.1 Introduction 167 9.2 Multilevel Sustainable Information 168 9.3 Sustainability Hierarchy Models 170 9.3.1 Sustainability Frameworks 170 9.3.2 Sustainability Principles 172 9.3.3 Tools for Sustainability 172 9.4 Product Level Information 173 9.4.1 Life-Cycle Assessment 173 9.4.2 The Four Stages of LCA 173 9.4.3 CRT Monitors versus LCD Monitors: Life Cycle Assessment 174 9.5 Individual Level Information 174 9.6 Functional Level Information 176 9.6.1 Data Centre Energy Efficiency 176 9.6.2 Data Centre Power Metrics 176 9.6.3 Emerging Data Centre Metrics 177 9.7 Organizational Level Information 178 9.7.1 Reporting Greenhouse Gas Emissions 178 9.8 Regional/City Level Information 181 9.8.1 Developing a City Sustainability Plan: A Case Study 181 9.9 Measuring the Maturity of Sustainable ICT 182 9.9.1 A Capability Maturity Framework for SICT 182 9.9.2 Defining the Scope and Goal 185 9.9.3 Capability Maturity Levels 185 9.9.4 SICT Capability Building Blocks 186 9.9.5 Assessing and Managing SICT Progress 188 9.10 Conclusions 189 Appendix: Sustainability Tools and Standards 190 Acknowledgements 195 Review Questions 195 Discussion Questions 196 References 196 Further Reading and Useful Web Sites 197 Tools and Carbon Calculators 198 10 Enterprise Green IT Readiness 199 Alemayehu Molla and Vanessa Cooper Key Points 199 10.1 Introduction 199 10.2 Background: Readiness and Capability 201 10.3 Development of the G-Readiness Framework 202 10.3.1 Green IT Attitude 203 10.3.2 Green IT Policy 204 10.3.3 Green IT Governance 204 10.3.4 Green IT Practice 205 10.3.5 Green IT Technology 205 10.4 Measuring an Organization’s G-Readiness 206 10.4.1 G-Readiness Consultancy Services 206 10.4.2 Calculating the G-Readiness Index via a Survey Instrument 207 10.5 Conclusions 207 Review Questions 208 Discussion Questions 209 References 209 11 Sustainable IT Services: Creating a Framework for Service Innovation 211 Robert R. Harmon and Haluk Demirkan Key Points 211 11.1 Introduction 211 11.2 Factors Driving the Development of Sustainable IT 213 11.2.1 The Sustainability Dimensions of IT 213 11.2.2 Corporate Sustainability, Social Responsibility and IT 216 11.3 Sustainable IT Services (SITS) 219 11.3.1 Developing a Service-Dominant Logic 219 11.3.2 Business Value, Customer Value and Societal Value 220 11.3.3 SITS as Service Science 222 11.4 SITS Strategic Framework 224 11.4.1 The SITS Value Curve 224 11.4.2 Integrating Sustainable IT and Business Strategy 227 11.5 Sustainable IT Roadmap 229 11.5.1 Time Horizon 229 11.5.2 Market Segments 229 11.5.3 Products, Services and Technologies 229 11.5.4 Compliance, Regulations, Standards and Reporting 231 11.5.5 SITS Standards and Reporting 232 11.5.6 Organizational Changes 232 11.5.7 Value Goals 232 11.6 SITS Leadership and Best Practices 233 11.6.1 IBM 233 11.6.2 Cisco Systems, Inc. 233 11.6.3 Siemens AG 235 11.6.4 HP 235 11.6.5 Intel Corporation 235 11.6.6 Microsoft Corporation 235 11.6.7 Oracle 236 11.6.8 Google 236 11.6.9 Apple 236 11.6.10 Samsung 236 11.6.11 Pachube 236 11.6.12 SeeClickFix 237 11.7 Conclusions 237 11.8 Summary 237 Review Questions 238 Discussion Questions 238 References 238 Useful Web Sites 242 12 Green Enterprises and the Role of IT 243 Joseph Sarkis Key Points 243 12.1 Introduction 243 12.2 Organizational and Enterprise Greening 244 12.2.1 The Green Enterprise: A Value Chain Perspective 245 12.3 Information Systems in Greening Enterprises 248 12.3.1 Environmental Management Information Systems 250 12.3.2 Software and Databases 250 12.3.3 ERP EMISs 250 12.3.4 ERP Challenges and Deficiencies with Respect to EMIS 254 12.3.5 Integrating Environmental and LCA Information with ERP 254 12.3.6 Electronic Environmental and Sustainability Reporting 255 12.4 Greening the Enterprise: IT Usage and Hardware 255 12.4.1 Environmental Information Technology Standards 256 12.4.2 Green Management of Data Centres 256 12.5 Inter-organizational Enterprise Activities and Green Issues 256 12.5.1 Electronic Commerce and Greening the Extended Enterprise 257 12.5.2 Demanufacturing and Reverse Logistics 258 12.5.3 Eco-Industrial Parks and Information Systems 259 12.6 Enablers and Making the Case for IT and the Green Enterprise 261 12.7 Conclusions 262 Review Questions 262 Discussion Questions 262 References 263 13 Environmentally Aware Business Process Improvement in the Enterprise Context 265 Konstantin Hoesch-Klohe and Aditya Ghose Key Points 265 13.1 Introduction 265 13.2 Identifying the Environmental Impact of an Activity or Process 266 13.2.1 Educated Guess by an Expert 266 13.2.2 Derivation from a Resource Model 267 13.2.3 Carbon-Dioxide Accumulation 267 13.2.4 Activity-Based Costing 267 13.3 A Decision Support Tool for Environmentally Aware Business Process Improvement 268 13.3.1 Some Preliminaries 268 13.3.2 The Business Process Improvement System 269 13.4 Process Improvement in the Enterprise Context 270 13.4.1 The Enterprise Ecosystem 271 13.4.2 Enterprise Ecosystem Equilibrium 272 13.5 Impact and Change Propagation Analysis 272 13.5.1 Identifying the Consequences of a Business Process Change 272 13.5.2 Re-Establishing a State of Equilibrium 273 13.6 Trade-Off Analysis 275 13.6.1 Cost to Bring about the Change 275 13.6.2 Environmental Operating Costs 276 13.7 An Example 276 13.7.1 As-Is Scenario 276 13.7.2 Improvement Scenarios 277 13.7.3 Assessing Scenarios 278 13.8 Conclusions 280 Review Questions 280 Discussion Questions 280 References 280 14 Managing Green IT 283 Linda R. Wilbanks Key Points 283 14.1 Introduction 283 14.2 Strategizing Green Initiatives 284 14.2.1 Strategic Thinking 284 14.2.2 Strategic Planning 285 14.2.3 Strategic Implementation 286 14.2.4 Enterprise Architecture Planning 286 14.3 Implementation of Green IT 288 14.3.1 Return on Investment 289 14.3.2 Metrics 290 14.3.3 The Goal–Question–Metric (GQM) Paradigm 291 14.4 Information Assurance 292 14.4.1 Risk Management 292 14.5 Communication and Social Media 294 14.6 Case Study 295 14.7 Summary 296 Review Questions 296 Discussion Questions 296 References 296 15 Regulating Green IT: Laws, Standards and Protocols 297 Tom Butler Key Points 297 15.1 Introduction 297 15.2 The Regulatory Environment and IT Manufacturers 299 15.2.1 RoHS 300 15.2.2 REACh 301 15.2.3 WEEE 302 15.2.4 Legislating for GHG Emissions and Energy Use of IT Equipment 303 15.3 Nonregulatory Government Initiatives 303 15.4 Industry Associations and Standards Bodies 305 15.5 Green Building Standards 306 15.6 Green Data Centres 306 15.7 Social Movements and Greenpeace 308 15.8 Conclusions 311 Review Questions 312 Discussion Questions 313 References 313 Further Reading 314 16 Green Cloud Computing and Environmental Sustainability 315 Saurabh Kumar Garg and Rajkumar Buyya Key Points 315 16.1 Introduction 315 16.2 What is Cloud Computing? 318 16.2.1 Cloud Computing Characteristics 318 16.2.2 Components of Cloud Computing 319 16.2.3 Cloud Computing Deployment Models 321 16.3 Cloud Computing and Energy Usage Model: A Typical Example 322 16.3.1 User and Cloud Software Applications 323 16.3.2 Cloud Software Stack for the SaaS, PaaS and IaaS Levels 323 16.3.3 Network Devices 324 16.3.4 Data Centres 325 16.4 Features of Clouds Enabling Green Computing 325 16.5 Towards Energy Efficiency of Cloud Computing 327 16.5.1 Applications 327 16.5.2 Cloud Software Stack: Virtualization and Provisioning 327 16.5.3 Data Centre Level: Cooling, Hardware, Network and Storage 329 16.5.4 Monitoring and Metering 330 16.5.5 Network Infrastructure 331 16.6 Green Cloud Architecture 332 16.7 Case Study: IaaS Provider 334 16.8 Conclusions and Future Directions 336 Acknowledgements 337 Review Questions 337 Discussion Questions 337 References 337 17 Harnessing Semantic Web Technologies for the Environmental Sustainability of Production Systems 341 Chris Davis, Igor Nikolic and Gerard Dijkema Key Points 341 17.1 Introduction 341 17.2 Information Management for Environmental Sustainability 344 17.2.1 Invisible Coordination 344 17.2.2 Sustainability and Networks 344 17.2.3 Need for Information Management Techniques 345 17.3 Ecosystem of Software Tools 346 17.3.1 MediaWiki 346 17.3.2 Semantic MediaWiki 348 17.3.3 SparqlExtension 350 17.3.4 Semantic Web 351 17.4 Examples of Managing Data 353 17.4.1 Pages for Commodities 353 17.4.2 Pages for Processes 354 17.4.3 Pages for Overviews and Information Management 356 17.4.4 Reuse of Data across Multiple Levels and Points of View 358 17.5 Challenges and Guiding Principles 358 17.5.1 Challenges 358 17.5.2 Guiding Principles 359 17.6 Conclusions 360 Review Questions 361 Discussion Questions 361 References 361 Further Reading and Useful Web Sites 363 18 Green IT: An Outlook 365 San Murugesan and G.R. Gangadharan Key Points 365 18.1 Introduction 365 18.2 Awareness to Implementation 366 18.2.1 Green IT Trends 366 18.2.2 Green Engineering 367 18.3 Greening by IT 368 18.3.1 Using RFID for Environmental Sustainability 368 18.3.2 Smart Grids 369 18.3.3 Smart Buildings and Homes 371 18.3.4 Green Supply Chain and Logistics 371 18.3.5 Enterprise-Wide Environmental Sustainability 372 18.4 Green IT: A Megatrend? 373 18.4.1 Outsourcing and Environmental Attributes 374 18.4.2 Green Audit 375 18.5 A Seven-Step Approach to Creating Green IT Strategy 375 18.5.1 Balancing the Costs and Benefits of Going Green 376 18.6 Research and Development Directions 376 18.7 Prospects 377 Review Questions 378 Discussion Questions 378 References 378 Glossary 381 Index 389

Rezension

"This book will be an excellent resource for IT Professionals, academics, students, researchers, project leaders/managers, IT business executives, CIOs, CTOs and anyone interested in Green IT and harnessing it to enhance our environment.” (Computer Science of India (CSI) enewsletter), 1 February 2013)

Autorenportrait

Dr San Murugesan, University of Western Sydney, Australia San Murugesan is Adjunct Professor in the School of Computing and Mathematics at the University of Western Sydney, Australia; and an independent IT, Research and education consultant. He is Director of the consulting firm BRITE Professional Services. He holds PhD; MTech and BE (Hons) degrees. Dr. G.R. Gangadharan, Politecnico di Milano, Italy G.R. Gangadharan is working as a Researcher in Politecnico di Milano, Milan, Italy. Prior to joining in PoliMi, he worked as a researcher at Novay (Telematica Institute), Enschede, Netherlands from June 2008 to February 2010. His research interests are mainly located on the interface between technological and business perspectives. He has received Ph.D. degree in Information and Communication Technology (2008) from the University of Trento, Trento, Italy and European University Association.

Back cover copy

“Ultimately, this is a remarkable book, a practical testimonial, and a comprehensive bibliography rolled into one. It is a single, bright sword cut across the various murky green IT topics. And if my mistakes and lessons learned through the green IT journey are any indication, this book will be used every day by folks interested in greening IT.” — Simon Y. Liu, Ph.D. & Ed.D., Editor-in-Chief, IT Professional Magazine, IEEE Computer Society, Director, U.S. National Agricultural Library This book presents a holistic perspective onGreen IT by discussing its various facets and showing how to strategically embrace it Harnessing Green IT: Principles and Practices examines various ways of making computing and information systems greener – environmentally sustainable -, as well as several means of using Information Technology (IT) as a tool and an enabler to improve the environmental sustainability. The book focuses on both greening of IT and greening by IT – complimentary approaches to attaining environmental sustainability. In a single volume, it comprehensively covers several key aspects of Green IT - green technologies, design, standards, maturity models, strategies and adoption -, and presents a clear approach to greening IT encompassing green use, green disposal, green design, and green manufacturing. It also illustrates how to stratgically apply green IT in practice in several areas. Key Features: <ul> <li>Presents a comprehensive coverage of key topics of imprortance and practical relevance - green technologies, design, standards, maturity models, strategies and adoption</li> <li>Highlights several useful approaches to embracing green IT in several areas</li> <li>Features chapters written by accomplished experts from industry and academia who have first-hand knowledge and expertise in specific areas of green IT</li> <li>Presents a set of review and discussion questions for each chapter that will help the readers to examine and explore the green IT domain further</li> <li>Includes a companion website providing resources for further information and presentation slides</li> </ul> This book will be an invaluable resource for IT Professionals, academics, students, researchers, project leaders/managers, IT business executives, CIOs, CTOs and anyone interested in Green IT and harnessing it to enhance our environment.

Unpublished endorsement

Ultimately, this is a remarkable book, a practical testimonial, and a comprehensive bibliography rolled into one. It is a single, bright sword cut across the various murky green IT topics. And if my mistakes and lessons learned through the green IT journey are any indication, this book will be used every day by folks interested in greening IT. Simon Y. Liu, Ph.D. & Ed.D., Editor-in-Chief, IT Professional Magazine, IEEE Computer Society, Director, U.S. National Agricultural Library. Harnessing Green IT showcases a collection of the most topical, innovative, and interesting topics in the green IT field. There have been relatively few practical and useful books on green IT. Harnessing Green IT is a timely publication for those who are interested in learning the principles and practices of green IT and in adopting or deploying green IT. In Lee, Professor in the School of Computer Science, and Editor-in-Chief of the International Journal of E-Business Research (IJEBR), Western Illinois University, Macomb, IL, USA Finally, there is a book that gets to the heart of why sustainability is so important to the future of information technology and the planet. Murugesan and Gangadharan, with Harnessing Green IT, have brought forward a work that is grounded both in research and experience that provides a strong foundation for the emerging discipline and managerial practice. Robert R. Harmon, Professor of Marketing & Technology Management, Cameron Research Fellow, School of Business, Portland State University, Portland, Oregon There are very few books that can be used by students, researchers, and practitioners, a like. This is a very good example of such a book. The balance of theory and practice is well documented and reported in an easy to comprehend style of writing. A must read! Samee U. Khan, Chair IEEE TCSC Technical Area in Green Computing, Director of the NDSU-CIIT Green Computing and Communications Laboratory, North Dakota State University, USA Recently green computing has attracting increasingly focus from computer scientists and IT professionals. This book summarizes Green IT principles and practices. I would like to congratulate the editors of this volume for putting together such a comprehensive and timely collection. I do believe that this book will provide a tremendous resource to students, researchers and practitioners, and for having a significant impact on this important and growing field -- Green IT. Lizhe Wang, Co-Chair, IEEE TCSC Technical Area in Green Computing, Chinese Academy of Sciences, Beijing, P.R. China Are you Green ready? If yes, the sheer richness of the content and the way the book is organized can ameliorate your Green readiness quotient. If no, this is the book to lay your hands upon. The timing of this book could not have been more perfect. This is the best compendium on Green IT that I have had the privilege of reading in recent times. Worth every penny spent! Praveen B Malla PhD, Author of Corporate Governance: Concept, Evolution and India Story, Senior Researcher and Head - Thought Leadership Publishing, Infosys Limited, India "Harnessing Green IT: Principles and Practices" is a very interesting and useful new book that I would recommend for academics, practitioners and industry members. The book presents an holistic view of Green IT revolving around the associated technical aspects, management and business procedures. Jordi Cucurull Juan, Real-time Systems Laboratory (RTSLab), Linköping University, This new book is an important book in the Green IT area. The most impressive features of this book are the extensive and systematic classifications and summaries on Green IT especially on green computing. This book would be helpful to students, academic researchers, IT professionals, government policy makers to understand the scope, principles, different approaches, metrics, and standards of Green IT. Jinsong Wu, Chair, IEEE Technical Subcommittee on Green Communications and Computing (TSCGCC), IEEE Communications Society, Bell Laboratories, Shanghai, China Sustainability is a key growth imperative both for developed world as well those aspiring to achieve that level. The book is replete with ideas for practitioners as well as policy makers. It contains inputs both for strategy and tactical level. I compliment the authors for yeoman service and I am sure that implementation of ideas, concepts, and principles would lead to a better world preserving prosperity for the future generations. B. Sambamurthy, Director and CEO, Institute for Development and Research in Banking Technology, Hyderabad, India. While much has been achieved in reducing the environmental impact of IT, much remains to be done, and we also need to be aware of the important contribution IT can make to overall environmental efficiency. My experience of running a Green IT course is that we need a source which brings together the achievements and lays out the future challenges, this book does both those things in an accessible form. Professor Colin Pattinson, Head of School of Computing and Creative Technologies, Leeds Metropolitan University, UK