Contents 1 INTRODUCTION 2 BASIC DEFINITIONS 3 FAULTS‚ ERRORS‚ AND FAILURES 4 FAULT DURATION 5 DESIGN TECHNIQUES 6 FAULT-TOLERANT TECHNIQUES 7 TYPES OF REDUNDANCY 8 FAULT-TOLERANT ARCHITECTURE 9 REAL-TIME FAULT-TOLERANT SYSTEMS 10 THE LATENCY PROBLEM 11 APPLICATION AREAS 12 SOFTWARE FAULTS 13 DEPENDABILITY MODELLING 2 5 11 15 19 21 25 33 54 58 62 75 85 1 1 INTRODUCTION Welcome to the ‚ CSE42RFS Real-Time and Fault-Tolerant Systems! Course Objectives Historical Background 2 INTRODUCTION 3 COURSE
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NIGERIA DEPARTMENT OF COMPUTER SCIENCE AND ENGINEERING ACHIEVING FAULT-TOLERANCE IN OPERATING SYSTEM DESIGN AND IMPLEMENTATION Introduction Fault-tolerant computing is the art and science of building computing systems that continue to operate satisfactorily in the presence of faults. A fault-tolerant system may be able to tolerate one or more fault-types including - i) transient‚ intermittent or permanent hardware faults‚ ii) software and hardware design errors‚ iii) operator errors‚ or iv)
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An Overview of Intrusion Tolerance Techniques Introduction: Intrusion means an act of compromising a system. Intrusion prevention protects the system from compromising. Intrusion detection detects either failed attempts to compromise the system or successful attempts. Intrusion recovery is the steps need to be taken to recover the system (such as restoring from backups) after a system has been compromised in a security incident [1]. Intrusion tolerance include reacting‚ counteracting‚ recovering
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Fault-Tolerant Observers Supervisor: Dr Imad M. Jaimoukha Designing of a robust fault-tolerant observer that guarantees a certain level of performance for real-time applications. By: YEO Zhi-Wei‚ Laurence 00566245 Overview For any system such as a factory plant‚ an aircraft jet engine system or a water pumping system‚ it can be replicatedi by a mathematical model which includes the affecting dynamics based on observations and assumptions. However‚ it would be practically challenging
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Design of sensor based fault detection system for temperature measurement using Arduino and LabVIEW Abstract This paper proposes the design of sensor based fault detection system for temperature measurement using Arduino and LabVIEW. Temperature is one of the most important industrial parameter that needs to be monitored continuously‚ any variations in the temperature from its set point causes the system to fail. The failure of any system causes many losses such as economical‚ damage to the
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Designing a fault-tolerant system can be done at different levels of the software stack. We call general purpose the approaches that detect and correct the failures at a given level of that stack‚ masking them entirely to the higher levels (and ultimately to the end-user‚ who eventually see a correct result‚ despite the occurrence of failures). General-purpose approaches can target specific types of failures (e.g. message loss‚ or message corruption)‚ and let other types of failures hit higher levels
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Failures A. Cedillo POS-355 Failures In this paper I will be discussing the issue of failures in a distributed system‚ and to understand the different failures I will write about four failures that occur in and affect a distributed system. Also‚ I will be discussing and writing about how to isolate and fix two out of the four failure that can occur in the distributed system. In a distributed system nothing is set in stone or perfect‚ so there are some issues that can arise‚ and the issues
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University of Phoenix POS/355 June 10‚ 2013 It is important to understand that no distributed system is ever safe from any failures. No matter how fault tolerant a system is prepared‚ there is no such thing as a complete failure-proof system. A constant stream of problems will always arise and taking the necessary precautions and having strong problem solving skills are essential to the success of improving a distributed system from any type of failure. We will discuss four types
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TOLERANCE Definition - The capacity for or the practice of recognizing and respecting the beliefs or practices of others or Willingness to accept feelings‚ habits‚ or beliefs that are different from your own. Explanation - Tolerance‚ as we define it‚ refers to the skills we need to live together peacefully. In times of peace‚ people have a chance to prosper socially‚ economically and emotionally. Tolerance which there is room for every person‚ each with their own ideas‚ thoughts and dreams. Lack
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Tolerance is a virtue that is dying down slowly. In earlier days‚ children were part of a large family set up. It was difficult to find out the real parents of a child because the house was filled up with lots of cousins. Every one had the right and responsibility towards all the children. None of the children was given a special treatment. Terms like individuality‚ special place‚ independence‚ were taboo words. The key aspects that governed life were adjustment‚ sacrifice‚ putting others before
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