Posted On: Jun 22, 2022

The Amazon Relational Database Service (Amazon RDS) Multi-AZ deployment option with one primary and two readable standby database (DB) instances across three Availability Zones (AZs) now supports M5d and R5d instances. This deployment option gives you up to 2x lower transaction commit latency, automated fail overs typically under 35 seconds, and readable standby instances.

M5d and R5d DB instances are powered by Intel Xeon Platinum 8000 series processors in the cloud and increase DB instance choices for Amazon RDS Multi-AZ with two readable standbys. R5d DB instances offer up to 768 GiB of memory for applications that balance high performance writes and reads. Amazon RDS Multi-AZ deployments provide enhanced availability and durability for Amazon RDS DB instances, making them a natural fit for production database workloads. Although continuing to use network storage for durability, Multi-AZ deployments with two readable standbys optimize transaction commit performance using local instance storage. This configuration supports up to 2x faster transaction commits than a Multi-AZ DB instance deployment with one standby, without compromising data durability. Automated failovers in this configuration typically take under 35 seconds. In addition, the standby DB instances can also serve read traffic without needing to attach additional read replica DB instances. This deployment option is ideal when your workloads require lower write latency, automated failovers, and more read capacity.

Support for M5d and R5d DB instances in Multi-AZ deployment option is available in the US East (Ohio, N. Virginia), US West (Oregon), Asia Pacific (Singapore), Asia Pacific (Tokyo), Europe (Frankfurt), Europe (Ireland), and Europe (Stockholm) regions. It is available for Amazon RDS for PostgreSQL (version 13.4) and Amazon RDS for MySQL (version 8.0.28).

Learn more about The Amazon RDS Multi-AZ deployments in the Amazon RDS User Guide and in the AWS News Blog. Create or update a fully managed Amazon RDS Multi-AZ database with two readable standby instances in the Amazon RDS Management Console.