RDS Storage Auto Scaling continuously monitors actual storage consumption, and scales capacity up automatically when actual utilization approaches provisioned storage capacity. Auto Scaling works with new and existing database instances. You can enable Auto Scaling with just a few clicks in the AWS Management Console. There is no additional cost for RDS Storage Auto Scaling. You pay only for the RDS resources needed to run your applications. To learn more, please visit the Storage for Amazon RDS documentation page.

RDS Storage Auto Scaling is available in all commercial AWS regions except in Asia Pacific (Hong Kong) and AWS GovCloud.