• Computers

Computer System Reliability

Safety and Usability
Author: B.S. Dhillon
Publisher: CRC Press
ISBN: 1466573139
Category: Computers
Page: 249
View: 6561
Computer systems have become an important element of the world economy, with billions of dollars spent each year on development, manufacture, operation, and maintenance. Combining coverage of computer system reliability, safety, usability, and other related topics into a single volume, Computer System Reliability: Safety and Usability eliminates the need to consult many different and diverse sources in the hunt for the information required to design better computer systems. After presenting introductory aspects of computer system reliability such as safety, usability-related facts and figures, terms and definitions, and sources for obtaining useful information on computer system reliability, safety, and usability, the book: Reviews mathematical concepts considered useful to understanding subsequent chapters Presents various introductory aspects of reliability, safety, and usability and computer system reliability basics Covers software reliability assessment and improvement methods Discusses important aspects of software quality and human error and software bugs in computer systems Highlights software safety and Internet reliability Details important aspects of software usability including the need for considering usability during the software development phase, software usability engineering process, software usability inspection methods, software usability test methods, and guidelines for conducting software usability testing Elucidates web usability facts and figures, common design errors, web page design, tools for evaluating web usability, and questions to evaluate website message communication effectiveness Examines important aspects of computer system life cycle costing Written by systems reliability expert B.S. Dhillon, the book is accessible to all levels of readership, making it useful to beginners and seasoned professionals alike. Reflecting practical trends in computer engineering especially in the area of software, Dhillon emphasizes the importance of usability in software systems and expands reliability to web usability and management. It provides methods for designing systems with increased reliability, safety, and usability.

    • Technology & Engineering

Reliability of Computer Systems and Networks

Fault Tolerance, Analysis, and Design
Author: Martin L. Shooman
Publisher: John Wiley & Sons
ISBN: 0471464066
Category: Technology & Engineering
Page: 552
View: 5277
With computers becoming embedded as controllers in everything from network servers to the routing of subway schedules to NASA missions, there is a critical need to ensure that systems continue to function even when a component fails. In this book, bestselling author Martin Shooman draws on his expertise in reliability engineering and software engineering to provide a complete and authoritative look at fault tolerant computing. He clearly explains all fundamentals, including how to use redundant elements in system design to ensure the reliability of computer systems and networks. Market: Systems and Networking Engineers, Computer Programmers, IT Professionals.

    • Mathematics

Computing System Reliability

Models and Analysis
Author: Min Xie,Kim-Leng Poh,Yuan-Shun Dai
Publisher: Springer Science & Business Media
ISBN: 0306486369
Category: Mathematics
Page: 293
View: 9316
Computing systems are of growing importance because of their wide use in many areas including those in safety-critical systems. This book describes the basic models and approaches to the reliability analysis of such systems. An extensive review is provided and models are categorized into different types. Some Markov models are extended to the analysis of some specific computing systems such as combined software and hardware, imperfect debugging processes, failure correlation, multi-state systems, heterogeneous subsystems, etc. One of the aims of the presentation is that based on the sound analysis and simplicity of the approaches, the use of Markov models can be better implemented in the computing system reliability.

    • Computers

Computing System Reliability: Models and Analysis


Author: Min Xie,Yuan-Shun Dai,Kim-Leng Poh
Publisher: Springer Science & Business Media
ISBN: 030648496X
Category: Computers
Page: 293
View: 5002
Computing systems are of growing importance because of their wide use in many areas including those in safety-critical systems. This book describes the basic models and approaches to the reliability analysis of such systems. An extensive review is provided and models are categorized into different types. Some Markov models are extended to the analysis of some specific computing systems such as combined software and hardware, imperfect debugging processes, failure correlation, multi-state systems, heterogeneous subsystems, etc. One of the aims of the presentation is that based on the sound analysis and simplicity of the approaches, the use of Markov models can be better implemented in the computing system reliability.

    • Computers

Computer Systems Reliability


Author: Tom Anderson,Brian Randell
Publisher: CUP Archive
ISBN: 9780521227674
Category: Computers
Page: 482
View: 5931

    • Computers

Reliability in Computer System Design


Author: B. S. Dhillon
Publisher: Intellect Books
ISBN: 9780893914127
Category: Computers
Page: 282
View: 5869
This volume covers wide areas of interest such as life cycle costing, microcomputers, common-cause failures and space computers. Every effort is made to present difficult material with the aid of an example along with its solution. The material covered is summarized at the end of each chapter. The information is written in a format that allows readers to learn and better understand the philosophy of reliability in computer system design. At the same time, it tests their comprehension through listed exercises.

    • Computers

Reliable Computer Systems

Design and Evaluatuion
Author: Daniel Siewiorek,Robert Swarz
Publisher: Digital Press
ISBN: 1483297438
Category: Computers
Page: 908
View: 2200
Enhance your hardware/software reliability Enhancement of system reliability has been a major concern of computer users and designers ¦ and this major revision of the 1982 classic meets users' continuing need for practical information on this pressing topic. Included are case studies of reliable systems from manufacturers such as Tandem, Stratus, IBM, and Digital, as well as coverage of special systems such as the Galileo Orbiter fault protection system and AT&T telephone switching processors.

    • Computers

Performance and Reliability Analysis of Computer Systems

An Example-Based Approach Using the SHARPE Software Package
Author: Robin A. Sahner,Kishor Trivedi,Antonio Puliafito
Publisher: Springer Science & Business Media
ISBN: 1461523672
Category: Computers
Page: 404
View: 2516
Performance and Reliability Analysis of Computer Systems: An Example-Based Approach Using the SHARPE Software Package provides a variety of probabilistic, discrete-state models used to assess the reliability and performance of computer and communication systems. The models included are combinatorial reliability models (reliability block diagrams, fault trees and reliability graphs), directed, acyclic task precedence graphs, Markov and semi-Markov models (including Markov reward models), product-form queueing networks and generalized stochastic Petri nets. A practical approach to system modeling is followed; all of the examples described are solved and analyzed using the SHARPE tool. In structuring the book, the authors have been careful to provide the reader with a methodological approach to analytical modeling techniques. These techniques are not seen as alternatives but rather as an integral part of a single process of assessment which, by hierarchically combining results from different kinds of models, makes it possible to use state-space methods for those parts of a system that require them and non-state-space methods for the more well-behaved parts of the system. The SHARPE (Symbolic Hierarchical Automated Reliability and Performance Evaluator) package is the `toolchest' that allows the authors to specify stochastic models easily and solve them quickly, adopting model hierarchies and very efficient solution techniques. All the models described in the book are specified and solved using the SHARPE language; its syntax is described and the source code of almost all the examples discussed is provided. Audience: Suitable for use in advanced level courses covering reliability and performance of computer and communications systems and by researchers and practicing engineers whose work involves modeling of system performance and reliability.

    • Computers

Reliable Computer Systems

Collected Papers of the Newcastle Reliability Project
Author: Santosh Shrivastava
Publisher: Springer Science & Business Media
ISBN: 3642824706
Category: Computers
Page: 580
View: 6963
A research project to investigate the design and construction of reliable computing systems was initiated by B. Randell at the University of Newcastle upon Tyne in 1972. In over ten years of research on system reliability, a substantial number of papers have been produced by the members of this project. These papers have appeared in a variety of journals and conference proceedings and it is hoped that this book will prove to be a convenient reference volume for research workers active in this important area. In selecting papers published by past and present members of this project, I have used the following criteria: a paper is selected if it is concerned with fault tolerance and is not a review paper and was published before 1983. I have used these criteria (with only one or two exceptions!) in order to present a collection of papers with a common theme and, at the same time, to limit the size of the book to a reasonable length. The papers have been grouped into seven chapters. The first chapter introduces fundamental concepts of fault tolerance and ends with the earliest Newcastle paper on reliability. The project perhaps became well known after the invention of recovery blocks - a simple yet effective means of incorporating fault tolerance in software. The second chapter contains papers on recovery blocks, starting with the paper which first introduced the concept.

    • Computers

Design for Reliability

Information and Computer-Based Systems
Author: Eric Bauer
Publisher: John Wiley & Sons
ISBN: 9781118075081
Category: Computers
Page: 325
View: 949
System reliability, availability and robustness are often not well understood by system architects, engineers and developers. They often don't understand what drives customer's availability expectations, how to frame verifiable availability/robustness requirements, how to manage and budget availability/robustness, how to methodically architect and design systems that meet robustness requirements, and so on. The book takes a very pragmatic approach of framing reliability and robustness as a functional aspect of a system so that architects, designers, developers and testers can address it as a concrete, functional attribute of a system, rather than an abstract, non-functional notion.

    • Computers

Reliability and Availability of Cloud Computing


Author: Eric Bauer,Randee Adams
Publisher: John Wiley & Sons
ISBN: 1118394003
Category: Computers
Page: 352
View: 5887
A holistic approach to service reliability and availability of cloud computing Reliability and Availability of Cloud Computing provides IS/IT system and solution architects, developers, and engineers with the knowledge needed to assess the impact of virtualization and cloud computing on service reliability and availability. It reveals how to select the most appropriate design for reliability diligence to assure that user expectations are met. Organized in three parts (basics, risk analysis, and recommendations), this resource is accessible to readers of diverse backgrounds and experience levels. Numerous examples and more than 100 figures throughout the book help readers visualize problems to better understand the topic—and the authors present risks and options in bulleted lists that can be applied directly to specific applications/problems. Special features of this book include: Rigorous analysis of the reliability and availability risks that are inherent in cloud computing Simple formulas that explain the quantitative aspects of reliability and availability Enlightening discussions of the ways in which virtualized applications and cloud deployments differ from traditional system implementations and deployments Specific recommendations for developing reliable virtualized applications and cloud-based solutions Reliability and Availability of Cloud Computing is the guide for IS/IT staff in business, government, academia, and non-governmental organizations who are moving their applications to the cloud. It is also an important reference for professionals in technical sales, product management, and quality management, as well as software and quality engineers looking to broaden their expertise.

    • Computers

Beyond Redundancy

How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems
Author: Eric Bauer,Randee Adams,Daniel Eustace
Publisher: John Wiley & Sons
ISBN: 9781118104934
Category: Computers
Page: 336
View: 9552
How Geographic Redundancy Can Improve Service Availability and Reliability of Computer-Based Systems Enterprises make significant investments in geographically redundant systems to mitigate the very unlikely risk of a natural or man-made disaster rendering their primary site inaccessible or destroying it completely. While geographic redundancy has obvious benefits for disaster recovery, it is far less obvious what benefit georedundancy offers for more common hardware, software, and human failures. Beyond Redundancy provides both a theoretical and practical treatment of the feasible and likely benefits from geographic redundancy for both service availability and service reliability. The book is organized into three sections: Basics provides the necessary background on georedundancy and service availability Modeling and Analysis of Redundancy gives the technical and mathematical details of service availability modeling of georedundant configurations Recommendations offers specific recommendations on architecture, requirements, design, testing, and analysis of georedundant configurations A complete georedundant case study is included to illustrate the recommendations. The book considers both georedundant systems and georedundant solutions. The text also provides a general discussion about the capital expense/operating expense tradeoff that frames system redundancy and georedundancy. These added features make Beyond Redundancy an invaluable resource for network/system planners, IS/IT personnel, system architects, system engineers, developers, testers, and disaster recovery/business continuity consultants and planners.

    • Technology & Engineering

System Reliability Theory

Models and Statistical Methods
Author: Arnljot H?yland,Marvin Rausand
Publisher: John Wiley & Sons
ISBN: 0470317744
Category: Technology & Engineering
Page: 536
View: 3644
A comprehensive introduction to reliability analysis. The first section provides a thorough but elementary prologue to reliability theory. The latter half comprises more advanced analytical tools including Markov processes, renewal theory, life data analysis, accelerated life testing and Bayesian reliability analysis. Features numerous worked examples. Each chapter concludes with a selection of problems plus additional material on applications.

    • Computers

Computer system reliability


Author: Roy Longbottom
Publisher: John Wiley & Sons
ISBN: N.A
Category: Computers
Page: 321
View: 8518

    • Technology & Engineering

Systems Reliability and Failure Prevention


Author: Herbert Hecht
Publisher: Artech House
ISBN: 9781580537957
Category: Technology & Engineering
Page: 230
View: 5165
This timely resource offers you a comprehensive, unified treatment of the techniques and practice of systems reliability and failure prevention, without the use of advanced mathematics. Featuring numerous, in-depth real-world examples, the book distills the authorOCOs many years of practical experience in designing and testing critical systems. The book helps you set reliability requirements for a new product, monitor compliance with these requirements during development and later life cycle phases, account for software failures in an integrated reliability assessment, and allocate a fixed reliability improvement budget to guide decisions by cost considerations and trade-offs."

    • Technology & Engineering

Robust Communications Software

Extreme Availability, Reliability and Scalability for Carrier-Grade Systems
Author: Greg Utas
Publisher: John Wiley & Sons
ISBN: 0470011785
Category: Technology & Engineering
Page: 352
View: 5918
Learn how to design scalable, robust software for cutting-edge communications productsâ?¦ Carrier-grade software must satisfy the stringent quality requirements of network operators whose systems provide mission-critical communications services. This book describes proven carrier-grade software techniques used in flagship products designed by industry leaders such as Lucent, Nortel, and Ericsson. In the age of 24/7, software robustness is a competitive advantage. This authoritative guide for software engineers, managers, and testers of products that face carrier-grade requirements helps you to develop state-of-the-art software that will give you an edge in todayâ??s marketplace. Robust Communications Software: Extreme Availability, Reliability and Scalability for Carrier-Grade Systems offers advice on choosing the right technologies for building reliable software incorporates real-world examples and design rationales when describing how to construct robust, embedded software for communications systems presents a comprehensive set of carrier-grade design patterns that help you to meet extreme availability, reliability, scalability, and capacity requirements gives advice on how to protect against and recover from software faults discusses system installation, operability, maintenance, and on-site debugging


    • Technology & Engineering

Transportation Systems Reliability and Safety


Author: B.S. Dhillon
Publisher: CRC Press
ISBN: 9781439846414
Category: Technology & Engineering
Page: 236
View: 6569
During day-to-day use, thousands of lives are lost each year due to accidents, directly or indirectly, resulting from poor transportation system reliability and safety. In the United States, automobile accidents alone result in around 42,000 deaths per year, costing billions of dollars to the economy each year. A common subject in journal articles and conference proceedings, most of the recent research on transportation systems reliability and safety is scattered in different resources. Until now. Drawing together the latest research spread throughout the literature, Transportation Systems Reliability and Safety eliminates the need to consult many different and diverse sources to obtain up-to-date information and research. It contains a chapter on mathematical concepts and another chapter on reliability and safety basics that form a foundation for understanding the contents of subsequent chapters. The book also presents a chapter devoted to methods for performing transportation system reliability and safety analysis. It includes a reference section at the end of each chapter for readers who wish to delve deeper into a specific area. The author clearly and concisely covers topics in such a manner that readers require no previous knowledge to understand the concepts. He provides examples and their solutions as well as numerous problems at the end of each chapter to test reader comprehension. The presentation of historical information paired with recent research give readers a foundation for understanding where the field is now and snapshot of where it may be going.

    • Technology & Engineering

Safety of Computer Control Systems

Proceedings of the IFAC Workshop, Stuttgart, Federal Republic of Germany, 16-18 May 1979
Author: R. Lauber
Publisher: Elsevier
ISBN: 1483153754
Category: Technology & Engineering
Page: 230
View: 1988
Safety of Computer Control Systems is a collection of papers from the Proceedings of the IFAC Workshop, held in Stuttgart, Germany on May 16-18, 1979. This book discusses the inherent problems in the hardware and software application of computerized control to automated systems safeguarding human life, property, and the environment. The papers discuss more specific concerns, such as railway systems, aircraft landing systems, nuclear power stations, chemical reactors, elevators, and cranes. The book also describes the safety and reliability of complex industrial computer systems together with an example showing the application of computers in power plants. One paper presents guidelines in documenting safety related computer systems that will help various parties who are involved in their purchase and operation. Another paper discusses how to detect failures in microcomputer systems such as memory violations and invalid operation code detectors. This book then concludes by discussing the necessity of inspecting process computers used in nuclear power plants, especially when computers are used in reactor protection, control rod, and authentication of log-in systems. This collection can be of interest for students of programming, process-computer analysts, heads of computer technology departments and institutions, and lecturers in industrial computer programming and design.

    • Computers

Reliable Distributed Systems

Technologies, Web Services, and Applications
Author: Kenneth Birman
Publisher: Springer Science & Business Media
ISBN: 0387276017
Category: Computers
Page: 668
View: 9004
Explains fault tolerance in clear terms, with concrete examples drawn from real-world settings Highly practical focus aimed at building "mission-critical" networked applications that remain secure