Help Center/ Relational Database Service/ User Guide (Kuala Lumpur Region)/ FAQs/ Capacity Expansion and Specification Change/ Are My RDS DB Instances Available When Scaling?
Updated on 2022-08-16 GMT+08:00
View PDF
Share

Are My RDS DB Instances Available When Scaling?

Currently, you can scale up storage space and change the CPU or memory of a DB instance.

  • When storage space is being scaled up, RDS DB instances are still available and services are not affected. However, you cannot delete or reboot DB instances that are being scaled.
  • When the CPU or memory of DB instances is being changed, the network is intermittently disconnected once or twice within a few seconds. (For Microsoft SQL Server 2017 Enterprise Edition, you need to stop services first and then change the CPU or memory of DB instances.) For primary/standby DB instances, a failover may occur and services may be briefly interrupted. Changing the CPU or memory takes 5 to 15 minutes.

    After you change the CPU or memory, the DB instances will reboot and services will be interrupted. Therefore, you are advised to change instance classes during off-peak hours.