Posted On: Nov 22, 2017
You can now scale the storage of your Amazon RDS for SQL Server database instances up to 16TB. An instance must use the Provisioned IOPS or General Purpose (SSD) storage types to be eligible. Some instances with older storage configurations are not eligible.
You can modify the size of an existing instance via the Modify action in the Amazon RDS Console, or via CLI. If the instance is not eligible, the scaling option will be disabled in the console. You can also use the describe-valid-db-instance-modifications CLI command which returns the valid storage option for your DB instance.