Help Center/ Relational Database Service_RDS for MariaDB/ FAQs/ Capacity Expansion and Specification Change/ Are My RDS for MariaDB Instances Still Available During Storage Scale-up or Instance Class Change?
Updated on 2025-06-24 GMT+08:00
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Are My RDS for MariaDB Instances Still Available During Storage Scale-up or Instance Class Change?

Currently, you can scale up storage space and change the vCPU 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.
  • After you change the instance class of a DB instance, the DB instance will be rebooted and the cache in the memory will be automatically cleared. To prevent service interruption, perform the operation during off-peak hours. Changing an instance class during peak hours will take much more time.

    When you change the instance class of a primary/standby instance, service downtime only occurs during the primary/standby switchover. The duration of the downtime varies from seconds to minutes based on the replication delay and the number of temporary files. Perform the operation during off-peak hours.

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