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Automatic control --- Redundancy (Engineering) --- Reliability --- Industrial safety --- Reliability (Engineering)

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Companies and other organizations depend more than ever on the availability of their Information Technology, and most mission critical business processes are IT-based processes. Business continuity is the ability to do business under any circumstances and is an essential requirement modern companies are facing. High availability and disaster recovery are contributions of the IT to fulfill this requirement. And companies will be confronted with such demands to an even greater extent in the future, since their credit ratings will be lower without such precautions.Both, high availability and disaster recovery are realized by redundant systems. Redundancy can and should be implemented on different abstraction levels: from the hardware, the operating system and middleware components up to the backup computing center in case of a disaster. This book presents requirements, concepts, and realizations of redundant systems on all abstraction levels, and all given examples refer to UNIX and Linux systems.

Computernetwerken. --- Data recovery (Computer science) --- Electronic data processing --- Redundancy (Engineering)

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"This book provides both a theoretical and practical treatment of the feasible and likely benefits of geographic redundancy for both service availability and service reliability"-- "While geographic redundancy can obviously be a huge benefit for disaster recovery, it is far less obvious what benefit is feasible and likely for more typical non-catastrophic hardware, software, and human failures. Georedundancy and Service Availability provides both a theoretical and practical treatment of the feasible and likely benefits of geographic redundancy for both service availability and service reliability. The text provides network/system planners, IS/IT operations folks, system architects, system engineers, developers, testers, and other industry practitioners with a general discussion about the capital expense/operating expense tradeoff that frames system redundancy and georedundancy"--

Computer input-output equipment --- Computer networks --- Redundancy (Engineering) --- Reliability.

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Engineering IT-Enabled Electricity Services: The Tale of Two Low-Cost Green Azores Islands covers sustainable energy services to customers - a balanced choice and coordination of energy generated by traditional and alternative sources. The “Green Islands” project represents a decade of work by over a dozen researchers who have developed a model designed to utilize the potential of distributed clean resources. The key is the proper use of Information Technology (IT).  Sited on two islands in the Azores, the project developed the model of careful forecasting of demand and supply, down to the minute, coordinating the output of conventional power plants, wind energy, fly wheels, hydroelectricity, demand reduction, and even plug-in electric vehicles to take full advantage of the clean resources available. This contributed volume presents methods for predicting variable resources, such as wind power generation, and analyzes the achievable accuracy of these predictions. Throughout this book, contributors show that the cost of serving customers in systems with highly uncertain generation will depend to a very large extent on how well the predictions are done. Therefore, the supporting IT technologies based on predictive models become critical to avoid the need for fast-responding storage. The model the authors have developed could change the way power portfolios are built. A new perspective for optimization of green energy is presented in this book. Data provided with the book represents a repository of real-world   electric energy systems and its IT-enabled smarts.

Biology --- Ecology --- Mathematical models. --- Biological models --- Biomathematics --- Redundancy (Engineering) --- Reliability (Engineering) --- Fiabilité --- Mathematical models --- Modèles mathématiques --- Production of electric energy or. --- Energy Systems. --- Power Electronics, Electrical Machines and Networks. --- Energy systems. --- Power electronics. --- Electronics, Power --- Electric power --- Electronics

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Companies and other organizations depend more than ever on the availability of their Information Technology, and most mission critical business processes are IT-based processes. Business continuity is the ability to do business under any circumstances and is an essential requirement modern companies are facing. High availability and disaster recovery are contributions of the IT to fulfill this requirement. And companies will be confronted with such demands to an even greater extent in the future, since their credit ratings will be lower without such precautions. Both, high availability and disaster recovery, are realized by redundant systems. Redundancy can and should be implemented on different abstraction levels: from the hardware, the operating system and middleware components up to the backup computing center in case of a disaster. This book presents requirements, concepts, and realizations of redundant systems on all abstraction levels, and all given examples refer to UNIX and Linux systems.

Data recovery (Computer science) --- Electronic data processing --- Redundancy (Engineering) --- Backup processing alternatives. --- Industrial safety --- Reliability (Engineering) --- ADP backup processing alternatives --- Backup processing alternatives in electronic data processing --- Contingency planning in electronic data processing --- Data processing service centers --- Data protection --- Data reconstruction (Computer science) --- Reconstruction, Data (Computer science) --- Recovery, Data (Computer science) --- Management --- Computer network architectures. --- Computer system performance. --- Software engineering. --- Operating systems (Computers). --- Computer Systems Organization and Communication Networks. --- System Performance and Evaluation. --- Special Purpose and Application-Based Systems. --- Software Engineering/Programming and Operating Systems. --- Operating Systems. --- Computer operating systems --- Computers --- Disk operating systems --- Systems software --- Computer software engineering --- Engineering --- Architectures, Computer network --- Network architectures, Computer --- Computer architecture --- Operating systems --- Computer organization. --- Computer system failures. --- Special purpose computers. --- Special purpose computers --- Computer failures --- Computer malfunctions --- Computer systems --- Failure of computer systems --- System failures (Engineering) --- Fault-tolerant computing --- Organization, Computer --- Electronic digital computers --- Failures