Amazon RDS for MySQL supports inbound replication for RDS Multi-AZ deployment option with two readable standby DB instances
Amazon Relational Database Service (Amazon RDS) for MySQL now supports inbound replication from Amazon RDS Single-AZ database (DB) instances and Amazon RDS Multi-AZ DB instances with one standby to Amazon RDS Multi-AZ deployments with two readable standby database (DB) instances. You can use this inbound replication to help migrate your existing Amazon RDS MySQL deployments within minutes to Amazon RDS Multi-AZ deployments with two readable standby db instances, which has one writer instance and two readable standby instances across three availability zones. By creating a Multi-AZ deployment with two readable standby db instances as a read replica of your existing RDS MySQL database instance, you can promote the read replica to be your new primary, typically within minutes.
Amazon Relational Database Service (Amazon RDS) for MySQL now supports inbound replication from Amazon RDS Single-AZ database (DB) instances and Amazon RDS Multi-AZ DB instances with one standby to Amazon RDS Multi-AZ deployments with two readable standby database (DB) instances. You can use this inbound replication to help migrate your existing Amazon RDS MySQL deployments within minutes to Amazon RDS Multi-AZ deployments with two readable standby db instances, which has one writer instance and two readable standby instances across three availability zones. By creating a Multi-AZ deployment with two readable standby db instances as a read replica of your existing RDS MySQL database instance, you can promote the read replica to be your new primary, typically within minutes.
Amazon RDS Multi-AZ deployments provide enhanced availability and durability, making them a natural fit for production database workloads. Deployment of Amazon RDS Multi-AZ with two readable standby database instances supports up to 2x faster transaction commit latencies than a Multi-AZ deployment with one standby instance. In this configuration, automated failovers typically take under 35 seconds. In addition, the two readable standbys can also serve read traffic without needing to attach additional read replicas.
For a full list of the Amazon RDS Multi-AZ with two readable standbys regional availability and supported engine versions, refer the Amazon RDS User Guide.
Learn more about 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.