Cloud Managed Database Disaster Recovery

Calendar February 22, 2026
Databases
Intermediate, Advanced
Cloud-Database-Architecture, Disaster-Recovery-Planning, Cost-Optimization, Failover-Management
Disaster-Recovery, Rds, Aurora, Cloud-Sql, Azure-Sql, Cosmos-Db, Dynamodb, Multi-Az, Cross-Region, Failover, Aws, Gcp, Azure
Aws-Cli, Gcloud, Az-Cli, Terraform

Cloud Managed Database Disaster Recovery#

Every cloud provider offers managed database DR, but the actual behavior during a failure rarely matches the marketing. The documented failover time is the best case. The real failover time includes detection delay, DNS propagation, and connection draining. This guide covers what actually happens.

AWS: RDS and Aurora#

RDS Multi-AZ#

RDS Multi-AZ maintains a synchronous standby in a different availability zone. When the primary fails, RDS flips the DNS CNAME to the standby.