Ensure that your Amazon Relational Database Service (RDS) instances have Storage AutoScaling feature enabled in order to provide dynamic scaling support for the database's storage based on your application needs. Enabling RDS Storage AutoScaling will allow the storage to increase once the configured threshold is exceeded. The following types of RDS support Storage Auto Scaling: Amazon RDS for MariaDB, Amazon RDS for MySQL, Amazon RDS for PostgreSQL, Amazon RDS for SQL Server and Amazon RDS for Oracle.
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With RDS Storage AutoScaling feature enabled, when Amazon RDS detects that your database is running out of disk space it automatically scales up your database instance storage. For example, you can use this feature for a new mobile application that users are adopting rapidly. In this case, a rapidly increasing workload might exceed the available database storage. To avoid having to manually scale up database storage, enable Amazon RDS Storage AutoScaling.
To determine if RDS Storage AutoScaling feature is enabled for your Amazon RDS database instances, perform the following actions:
Remediation / Resolution
To enable and configure RDS Storage AutoScaling feature for your existing Amazon RDS database instances, perform the following actions:
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Enable Amazon RDS Storage AutoScaling
Risk level: Medium