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

When data residency keeps you in one region with a small DR-distance requirement, what replication mode does that unlock, and what's the resulting RPO advantage over multi-region?

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

Your SAP stack has an app server at 99.5% and a HANA DB across AZs at 99.99%. A colleague says the composite SLA is 99.5% (the weakest link). Why is that wrong, and which way does the real number move?

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Name the four single-region HA/DR patterns for SAP and the one property that separates the 99.5% pair from the 99.99% / ~0-RPO pair.

If a single AWS transit center inside a region fails, do instances in one AZ lose connectivity to another AZ? Why or why not, and what does the answer let you trust?

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You have a tightly integrated SAP system group (ERP, BW, CRM, SRM, GTS). Every per-system RPO is met on failover, yet finance reports cross-system data is inconsistent. Which objective did you miss, and what does it demand?

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