How do I scale an ApsaraDB RDS instance?-ApsaraDB RDS(RDS)-阿里云帮助中心

ApsaraDB RDS supports two scaling approaches: manually changing instance specifications and configuring automatic scaling.

Scaling methods at a glance

Method	Description	Supported engines
Change specifications	Manually upgrade or downgrade CPU, memory, and storage	MySQL, PostgreSQL, SQL Server, MariaDB
Automatic performance scaling	Automatically scales compute resources based on load	MySQL
Automatic storage expansion	Automatically expands storage when available space drops below a threshold	MySQL, PostgreSQL

Manually change the CPU, memory, storage capacity, or instance type of an existing RDS instance.

For step-by-step instructions, see the topic for your database engine:

RDS for MySQL supports two automatic scaling features that reduce manual intervention:

Configure automatic performance scaling — automatically adjusts compute performance.
Configure automatic storage expansion — automatically increases storage capacity.

RDS for PostgreSQL supports automatic storage expansion, which increases storage capacity automatically.