Amazon Web Services → Microsoft Azure
Azure equivalent of Amazon RDS Multi-AZ deployments
RDS Multi-AZ deployments map to zone-redundant high availability in Azure Database for PostgreSQL and MySQL, and to the zone-redundant configurations of Azure SQL Database and Managed Instance.
About Amazon RDS Multi-AZ deployments
| Provider | Amazon Web Services |
|---|---|
| Status | Generally available |
| What it is | Synchronous standby in another AZ with automatic failover (Multi-AZ DB instance), or a Multi-AZ DB cluster with two readable standbys for MySQL and PostgreSQL. |
| Documentation | docs.aws.amazon.com |
| Pricing | Official pricing page |
Azure mappings (1)
| Capability | Azure equivalent | Match |
|---|---|---|
| In-region high availability with automatic failover | Zone-redundant high availability (PostgreSQL, MySQL, Azure SQL) | Direct match |
Availability, scaling & operations(1)
In-region high availability with automatic failover Direct match
RDS Multi-AZ deployments map to zone-redundant high availability in Azure Database for PostgreSQL and MySQL, and to the zone-redundant configurations of Azure SQL Database and Managed Instance.
- Readable standbys. RDS Multi-AZ DB clusters (MySQL and PostgreSQL) have two readable standbys. Azure PostgreSQL and MySQL standbys aren't readable. Azure SQL Business Critical includes a free readable secondary.
- Same-zone option. Azure PostgreSQL and MySQL also offer same-zone HA, where the standby is in the same zone, for lower latency in regions or setups without zone redundancy.
- Aurora. Aurora's storage is already spread across three AZs, and any replica can become the writer. Azure's closest match is HorizonDB (preview) or SQL Database Hyperscale.