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:
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RDS for Db2
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RDS for MariaDB
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RDS for Oracle
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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 |
| Canada (Central) | Version 8.0.28 and higher |
| Canada West (Calgary) | 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 list the available versions in a Region for a given DB instance class using the Amazon CLI. Change the DB instance class to show the available engine versions for it.
For Linux, macOS, or Unix:
aws rds describe-orderable-db-instance-options \ --engine mysql \ --db-instance-classdb.r5d.large\ --query '*[]|[?SupportsClusters == `true`].[EngineVersion]' \ --output text
For Windows:
aws rds describe-orderable-db-instance-options ^ --engine mysql ^ --db-instance-classdb.r5d.large^ --query "*[]|[?SupportsClusters == `true`].[EngineVersion]" ^ --output text
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 16 | RDS for PostgreSQL 15 | RDS for PostgreSQL 14 | RDS for PostgreSQL 13 |
|---|---|---|---|---|
| US East (Ohio) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| US East (N. Virginia) | All PostgreSQL 16 versions | 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 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Africa (Cape Town) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Asia Pacific (Hong Kong) | All PostgreSQL 16 versions | 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 16 versions | 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 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Asia Pacific (Osaka) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Asia Pacific (Seoul) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Asia Pacific (Singapore) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Asia Pacific (Sydney) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Asia Pacific (Tokyo) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Canada (Central) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Canada West (Calgary) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| China (Beijing) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| China (Ningxia) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Europe (Frankfurt) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Europe (Ireland) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Europe (London) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Europe (Milan) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Europe (Paris) | All PostgreSQL 16 versions | All PostgreSQL 15 versions | Version 14.5 and higher | Version 13.4 and version 13.7 and higher |
| Europe (Spain) | – | – | – | – |
| Europe (Stockholm) | All PostgreSQL 16 versions | 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 16 versions | 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 16 versions | 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 list the available versions in a Region for a given DB instance class using the Amazon CLI. Change the DB instance class to show the available engine versions for it.
For Linux, macOS, or Unix:
aws rds describe-orderable-db-instance-options \ --engine postgres \ --db-instance-classdb.r5d.large\ --query '*[]|[?SupportsClusters == `true`].[EngineVersion]' \ --output text
For Windows:
aws rds describe-orderable-db-instance-options ^ --engine postgres ^ --db-instance-classdb.r5d.large^ --query "*[]|[?SupportsClusters == `true`].[EngineVersion]" ^ --output text