AWS Reliability Pillar
Reliability Pillar
Archived AWS Well-Architected Framework This paper has been archived. The latest version is now available at:
Reliability Pillar AWS Well-Architected Framework
Reliability Pillar: AWS Well-Architected Framework
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Archived
Reliability Pillar AWS Well-Architected Framework
Table of Contents
Abstract ............................................................................................................................................ 1 Abstract .................................................................................................................................... 1
Introduction ...................................................................................................................................... 2 Reliability .......................................................................................................................................... 3
Design Principles ........................................................................................................................ 3 Definitions ................................................................................................................................. 3
Resiliency, and the Components of Reliability ........................................................................ 4 Availability ........................................................................................................................ 4 Disaster Recovery (DR) Objectives ........................................................................................ 7 Understanding Availability Needs ................................................................................................. 8 Foundations ....................................................................................................................................... 9 Manage Service Quotas and Constraints ....................................................................................... 9 Resources ........................................................................................................................ 10
Archived Plan your Network Topology ..................................................................................................... 10 Resources ........................................................................................................................ 14 Workload Architecture ...................................................................................................................... 15
Design Your Workload Service Architecture .................................................................................. 15 Resources ........................................................................................................................ 17
Design Interactions in a Distributed System to Prevent Failures ...................................................... 17 Resources ........................................................................................................................ 19
Design Interactions in a Distributed System to Mitigate or Withstand Failures ................................... 20 Resources ........................................................................................................................ 24
Change Management ........................................................................................................................ 25 Monitor Workload Resources ...................................................................................................... 25 Resources ........................................................................................................................ 28 Design your Workload to Adapt to Changes in Demand ................................................................. 28 Resources ........................................................................................................................ 29 Implement Change ................................................................................................................... 30 Additional deployment patterns to minimize risk: ................................................................. 32 Resources ........................................................................................................................ 32
Failure Management ......................................................................................................................... 34 Back up Data ........................................................................................................................... 34 Resources ........................................................................................................................ 35 Use Fault Isolation to Protect Your Workload ............................................................................... 36 Resources ........................................................................................................................ 40 Design your Workload to Withstand Component Failures ............................................................... 41 Resources ........................................................................................................................ 43 Test Reliability ......................................................................................................................... 44 Resources ........................................................................................................................ 46 Plan for Disaster Recovery (DR) .................................................................................................. 47 Resources ........................................................................................................................ 49
Example Implementations for Availability Goals ................................................................................... 50 Dependency Selection ............................................................................................................... 50 Single-Region Scenarios ............................................................................................................ 50 2 9s (99%) Scenario ......................................................................................................... 51 3 9s (99.9%) Scenario ....................................................................................................... 52 4 9s (99.99%) Scenario ..................................................................................................... 54 Multi-Region Scenarios .............................................................................................................. 56 3? 9s (99.95%) with a Recovery Time between 5 and 30 Minutes .......................................... 56 5 9s (99.999%) or Higher Scenario with a Recovery Time under 1 minute ................................. 59 Resources ................................................................................................................................ 61 Documentation ................................................................................................................ 61 Labs ................................................................................................................................ 62 External Links .................................................................................................................. 62
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Reliability Pillar AWS Well-Architected Framework Books .............................................................................................................................. 62 Conclusion ....................................................................................................................................... 63 Contributors .................................................................................................................................... 64 Further Reading ............................................................................................................................... 65 Document Revisions .......................................................................................................................... 66 Appendix A: Designed-For Availability for Select AWS Services ............................................................... 68
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Reliability Pillar AWS Well-Architected Framework Abstract
Reliability Pillar - AWS WellArchitected Framework
Publication date: July 2020 (Document Revisions (p. 66))
Abstract
The focus of this paper is the reliability pillar of the AWS Well-Architected Framework. It provides
Archived guidance to help customers apply best practices in the design, delivery, and maintenance of Amazon Web Services (AWS) environments.
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