You can change the performance specification for the guaranteed-performance instances.
Note: The switch between guaranteed-performance instances and shared-performance instances is not supported currently.
Log on to the
Server Load Balancer console.
Click Instances, find the target instance, and then click More > Change Configuration. In the Warning dialog, click I am aware of the risk, continue.
In the Configuration upgrade area, choose a new specification, and then click Activate to complete the change.
The changes take effect in real time.