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Medium DMS · regional

DMS replication instances should be configured to use multiple Availability Zones

Flags AWS DMS replication instances that are not deployed in a Multi-AZ configuration. Single-AZ replication instances interrupt migrations during AZ-level failures.

service: DMS
severity: Medium
scope: evaluated in every region

How to fix it

Modify each replication instance to enable Multi-AZ deployment.

Open the AWS DMS console and choose Replication instances.
Select the instance and choose Modify.
Set Multi-AZ to Yes.
Apply the change immediately or during the next maintenance window.

See which of your accounts this check is failing on.

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