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| Figures | |
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| Tables | |
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| Equations | |
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| Introduction | |
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| Basics | |
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| Cloud Computing | |
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| Essential Cloud Characteristics | |
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| Common Cloud Characteristics | |
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| But What, Exactly, Is Cloud Computing? | |
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| Service Models | |
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| Cloud Deployment Models | |
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| Roles in Cloud Computing | |
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| Benefi ts of Cloud Computing | |
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| Risks of Cloud Computing | |
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| Virtualization | |
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| Background | |
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| What Is Virtualization? | |
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| Server Virtualization | |
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| VM Lifecycle | |
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| Reliability and Availability Risks of Virtualization | |
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| Service Reliability and Service Availability | |
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| Errors and Failures | |
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| Eight-Ingredient Framework | |
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| Service Availability | |
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| Service Reliability | |
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| Service Latency | |
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| Redundancy and High Availability | |
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| High Availability and Disaster Recovery | |
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| Streaming Services | |
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| Reliability and Availability Risks of Cloud Computing | |
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| Analysis | |
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| Analyzing Cloud Reliability and Availability | |
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| Expectations for Service Reliability and Availability | |
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| Risks of Essential Cloud Characteristics | |
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| Impacts of Common Cloud Characteristics | |
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| Risks of Service Models | |
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| IT Service Management and Availability Risks | |
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| Outage Risks by Process Area | |
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| Failure Detection Considerations | |
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| Risks of Deployment Models | |
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| Expectations of IaaS Data Centers | |
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| Reliability Analysis of Virtualization | |
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| Reliability Analysis Techniques | |
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| Reliability Analysis of Virtualization Techniques | |
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| Software Failure Rate Analysis | |
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| Recovery Models | |
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| Application Architecture Strategies | |
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| Availability Modeling of Virtualized Recovery Options | |
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| Hardware Reliability, Virtualization, and Service Availability | |
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| Hardware Downtime Expectations | |
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| Hardware Failures | |
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| Hardware Failure Rate | |
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| Hardware Failure Detection | |
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| Hardware Failure Containment | |
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| Hardware Failure Mitigation | |
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| Mitigating Hardware Failures via Virtualization | |
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| Virtualized Networks | |
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| MTTR of Virtualized Hardware | |
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| Discussion | |
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| Capacity and Elasticity | |
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| System Load Basics | |
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| Overload, Service Reliability, and Service Availability | |
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| Traditional Capacity Planning | |
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| Cloud and Capacity | |
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| Managing Online Capacity | |
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| Capacity-Related Service Risks | |
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| Capacity Management Risks | |
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| Security and Service Availability | |
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| Architecting for Elastic Growth and Degrowth | |
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| Service Orchestration Analysis | |
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| Service Orchestration Definition | |
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| Policy-Based Management | |
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| Cloud Management | |
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| Service Orchestration�s Role in Risk Mitigation | |
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| Geographic Distribution, Georedundancy, and Disaster Recovery | |
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| Geographic Distribution versus Georedundancy | |
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| Traditional Disaster Recovery | |
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| Virtualization and Disaster Recovery | |
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| Cloud Computing and Disaster Recovery | |
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| Georedundancy Recovery Models | |
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| Cloud and Traditional Collateral Benefits of Georedundancy | |
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| Discussion | |
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| Recommendations | |
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| Applications, Solutions, and Accountability | |
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| Application Configuration Scenarios | |
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| Application Deployment Scenario | |
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| System Downtime Budgets | |
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| End-to-End Solutions Considerations | |
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| Attributability for Service Impairments | |
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| Solution Service Measurement | |
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| Managing Reliability and Service of Cloud Computing | |
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| Recommendations for Architecting a Reliable System | |
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| Architecting for Virtualization and Cloud | |
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| Disaster Recovery | |
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| IT Service Management Considerations | |
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| Many Distributed Clouds versus Fewer Huge Clouds | |
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| Minimizing Hardware-Attributed Downtime | |
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| Architectural Optimizations | |
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| Design for Reliability of Virtualized Applications | |
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| Design for Reliability | |
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| Tailoring DfR for Virtualized Applications | |
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| Reliability Requirements | |
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| Qualitative Reliability Analysis | |
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| Quantitative Reliability Budgeting and Modeling | |
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| Robustness Testing | |
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| Stability Testing | |
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| Field Performance Analysis | |
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| Reliability Roadmap | |
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| Hardware Reliability | |
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| Design for Reliability of Cloud Solutions | |
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| Solution Design for Reliability | |
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| Solution Scope and Expectations | |
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| Reliability Requirements | |
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| Solution Modeling and Analysis | |
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| Element Reliability Diligence | |
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| Solution Testing and Validation | |
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| Track and Analyze Field Performance | |
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| Other Solution Reliability Diligence Topics | |
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| Summary | |
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| Service Reliability and Service Availability | |
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| Failure Accountability and Cloud Computing | |
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| Factoring Service Downtime | |
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| Service Availability Measurement Points | |
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| Cloud Capacity and Elasticity Considerations | |
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| Maximizing Service Availability | |
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| Reliability Diligence | |
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| Concluding Remarks | |
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| Abbreviations | |
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| References | |
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| About the authors | |
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| Index | |