Caught Between Cost Efficiency and High Availability

How Distributed Services Across Three Zones Beat Two Zones in Cost and Reliability

Different Stakeholder, Different Priorities

Availability Targets & Service Level Agreements

Common Service Levels and Acceptable Downtime

Reliability of Distributed Systems

Availability Percentages and Probability of Failure

Capacity Planning and Failure Scenarios

High Availability Across Two Zones
High Availability Across Three Zones

Conclusion

Cloud Architect and Site Reliability Engineer with 10+ years in the field. Working for IBM in Toronto, Canada.