Prerequisites for a Multi-AZ deployment with RDS Custom for SQL Server - Amazon Relational Database Service
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Prerequisites for a Multi-AZ deployment with RDS Custom for SQL Server

If you have an existing RDS Custom for SQL Server Single-AZ deployment, the following additional prerequisites are required before modifying it to a Multi-AZ deployment. You can choose to complete the prerequisites manually or with the provided CloudFormation template. The latest CloudFormation template contains the prerequisites for both Single-AZ and Multi-AZ deployments.

Important

To simplify setup, we recommend that you use the latest Amazon CloudFormation template file provided in the network setup instructions to create the prerequisites. For more information, see Configuring with Amazon CloudFormation.

Note

When you modify an existing RDS Custom for SQL Server Single-AZ deployment to a Multi-AZ deployment, you must complete these prerequisites. If you don't complete the prerequisites, the Multi-AZ setup will fail. To complete the prerequisites, follow the steps in Modifying an RDS Custom for SQL Server Single-AZ deployment to a Multi-AZ deployment.

  • Update the RDS security group inbound and outbound rules to allow port 1120.

  • Add a rule in your private network Access Control List (ACL) that allows TCP ports 0-65535 for the DB instance VPC.

  • Create new Amazon SQS VPC endpoints that allow the RDS Custom for SQL Server DB instance to communicate with SQS.

  • Update the SQS permissions in the instance profile role.