AWS Solutions Architect Associate Practice Test

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Which type of DB instance in RDS does not support increasing storage?

MySQL
Aurora
Oracle
MSSQL

The correct answer is: MSSQL

In Amazon RDS, the type of database instance that does not support increasing storage is SQL Server (MSSQL). When you initially create an RDS SQL Server instance, you specify a certain amount of allocated storage, and this storage size cannot be modified after the instance is created. This is in contrast to other database engines supported by RDS. For example, both MySQL and Oracle database instances allow you to modify the allocated storage size after the initial setup, and Aurora further allows dynamic scaling of storage automatically based on the database's usage patterns. Understanding the limitations of each database engine in RDS is crucial for planning and decision-making regarding your cloud architecture. The inability to increase storage in MSSQL can have implications for growth and capacity planning, making it important to consider storage needs upfront when deploying this type of database instance.