req-nf-inf-availability

To design system availability for specific SLA targets, you define uptime goals and translate them into layer-by-layer redundancy, failover mechanisms, and operational behaviors across compute, database, and network layers. This ensures your infrastructure consistently meets the required availability rate.

Eliminating single points of failure (SPOFs) in a multi-AZ architecture requires creating a structured SPOF inventory and mapping each component to a specific redundancy strategy or explicit risk rationale. This process systematically removes vulnerabilities across all infrastructure layers.

Aligning RTO and RPO involves specifying end-to-end resilience designs that automatically trigger failover and health checks based on your recovery time objectives. This ensures operational behaviors and verification plans match your production-grade reliability engineering targets.

Yes, you can generate a complete availability design document for zero-downtime deployments by specifying multi-AZ redundancy, auto scaling, health checks, and planned maintenance windows. The output covers all layers including compute, DB, cache, storage, network, and DNS.

Planned maintenance affects SLA calculation by requiring explicit definition of how maintenance windows are treated within uptime targets. Clarifying this treatment ensures your availability design accurately reflects true system reliability during operational stops.