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DMS – Multi-AZ Deployment
- Concept: Creates a standby DMS replication instance in a different Availability Zone within the same Region.
- Architecture:
- AZ A: Primary DMS Replication Instance
- AZ B: Standby Replica (synchronous replication with primary)
- Benefits:
- High Availability: Automatic failover in case of issues with the primary.
- No I/O Freezes: Continuous migration without downtime.
- Stable Performance: Reduces latency spikes during failover events.
- Best For: Production migrations requiring maximum uptime and fault tolerance.