Multi-AZ DB clusters - Amazon Relational Database Service
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Multi-AZ DB clusters

A Multi-AZ DB cluster deployment in Amazon RDS provides a high availability deployment mode of Amazon RDS with two readable standby DB instances. A Multi-AZ DB cluster has a writer DB instance and two reader DB instances in three separate Availability Zones in the same Region. Multi-AZ DB clusters provide high availability, increased capacity for read workloads, and lower write latency when compared to Multi-AZ DB instance deployments. For more information, see Multi-AZ DB cluster deployments.

Multi-AZ DB clusters aren't available with the following engines:

  • RDS for MariaDB

  • RDS for Oracle

  • RDS for SQL Server

Multi-AZ DB clusters with RDS for MySQL

The following Regions and engine versions are available for Multi-AZ DB clusters with RDS for MySQL.

Region RDS for MySQL 8.0
US East (Ohio) Version 8.0.28 and higher
US East (N. Virginia) Version 8.0.28 and higher
US West (N. California)
US West (Oregon) Version 8.0.28 and higher
Africa (Cape Town) Version 8.0.28 and higher
Asia Pacific (Hong Kong) Version 8.0.28 and higher
Asia Pacific (Hyderabad)
Asia Pacific (Jakarta) Version 8.0.28 and higher
Asia Pacific (Melbourne)
Asia Pacific (Mumbai) Version 8.0.28 and higher
Asia Pacific (Osaka) Version 8.0.28 and higher
Asia Pacific (Seoul) Version 8.0.28 and higher
Asia Pacific (Singapore) Version 8.0.28 and higher
Asia Pacific (Sydney) Version 8.0.28 and higher
Asia Pacific (Tokyo) Version 8.0.28 and higher
Canada (Central) Version 8.0.28 and higher
China (Beijing) Version 8.0.28 and higher
China (Ningxia) Version 8.0.28 and higher
Europe (Frankfurt) Version 8.0.28 and higher
Europe (Ireland) Version 8.0.28 and higher
Europe (London) Version 8.0.28 and higher
Europe (Milan) Version 8.0.28 and higher
Europe (Paris) Version 8.0.28 and higher
Europe (Spain)
Europe (Stockholm) Version 8.0.28 and higher
Europe (Zurich)
Israel (Tel Aviv)
Middle East (Bahrain) Version 8.0.28 and higher
Middle East (UAE)
South America (São Paulo) Version 8.0.28 and higher
Amazon GovCloud (US-East)
Amazon GovCloud (US-West)

You can also list the available versions in a Region for the db.r5d.large DB instance class by running the following Amazon CLI command.

For Linux, macOS, or Unix:

aws rds describe-orderable-db-instance-options \ --engine mysql \ --db-instance-class db.r5d.large \ --query '*[]|[?SupportsClusters == `true`].[EngineVersion]' \ --output text

For Windows:

aws rds describe-orderable-db-instance-options ^ --engine mysql ^ --db-instance-class db.r5d.large ^ --query "*[]|[?SupportsClusters == `true`].[EngineVersion]" ^ --output text

You can change the DB instance class to show the available engine versions for it.

Multi-AZ DB clusters with RDS for PostgreSQL

The following Regions and engine versions are available for Multi-AZ DB clusters with RDS for PostgreSQL.

Region RDS for PostgreSQL 15 RDS for PostgreSQL 14 RDS for PostgreSQL 13
US East (Ohio) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
US East (N. Virginia) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
US West (N. California)
US West (Oregon) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Africa (Cape Town) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Asia Pacific (Hong Kong) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Asia Pacific (Hyderabad)
Asia Pacific (Jakarta) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Asia Pacific (Melbourne)
Asia Pacific (Mumbai) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Asia Pacific (Osaka) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Asia Pacific (Seoul) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Asia Pacific (Singapore) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Asia Pacific (Sydney) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Asia Pacific (Tokyo) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Canada (Central) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
China (Beijing) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
China (Ningxia) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Europe (Frankfurt) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Europe (Ireland) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Europe (London) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Europe (Milan) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Europe (Paris) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Europe (Spain)
Europe (Stockholm) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Europe (Zurich)
Israel (Tel Aviv)
Middle East (Bahrain) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Middle East (UAE)
South America (São Paulo) All PostgreSQL 15 versions Version 14.5 and higher Version 13.4 and version 13.7 and higher
Amazon GovCloud (US-East)
Amazon GovCloud (US-West)

You can also list the available versions in a Region for the db.r5d.large DB instance class by running the following Amazon CLI command.

For Linux, macOS, or Unix:

aws rds describe-orderable-db-instance-options \ --engine postgres \ --db-instance-class db.r5d.large \ --query '*[]|[?SupportsClusters == `true`].[EngineVersion]' \ --output text

For Windows:

aws rds describe-orderable-db-instance-options ^ --engine postgres ^ --db-instance-class db.r5d.large ^ --query "*[]|[?SupportsClusters == `true`].[EngineVersion]" ^ --output text

You can change the DB instance class to show the available engine versions for it.