SAP on AWS · Resilience: HA, DR & Service Levels for SAP

On-prem SAP clusters use a floating/VIP address that moves between nodes. Why does that not work across availability zoness (AZs) on AWS, and what mechanism replaces it?

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More in Resilience: HA, DR & Service Levels for SAP

The business signed for 99.95% S/4HANA uptime. Your AWS infrastructure SLAs all clear that bar. Why can you still breach the business-uptime SLA, and what closes the gap?

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An architect quotes the EC2 99.99% region SLA to justify running SAP Central Services on one instance. Why is that a misread of what the 99.99% covers, and what SLA does the lone instance actually carry?

A holiday outage costs $1,000/hour in lost revenue on a service that bills $100/month. How much does the AWS SLA credit return, and what's the lesson about using credits as a risk hedge?

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