CreateDBInstanceReadReplicaRequest (string, string)

The DB instance identifier of the Read Replica. This identifier is the unique key that identifies a DB instance. This parameter is stored as a lowercase string.

The identifier of the DB instance that will act as the source for the Read Replica. Each DB instance can have up to five Read Replicas. Constraints: Must be the identifier of an existing MySQL, MariaDB, or PostgreSQL DB instance.Can specify a DB instance that is a MySQL Read Replica only if the source is running MySQL 5.6.Can specify a DB instance that is a PostgreSQL Read Replica only if the source is running PostgreSQL 9.3.5.The specified DB instance must have automatic backups enabled, its backup retention period must be greater than 0.If the source DB instance is in the same region as the Read Replica, specify a valid DB instance identifier.If the source DB instance is in a different region than the Read Replica, specify a valid DB instance ARN. For more information, go to Constructing a Amazon RDS Amazon Resource Name (ARN).