You can change the specifications of your cluster to meet business requirements. PolarDB supports capacity scaling in three dimensions:
Scale up or down the computing capacity: Upgrade or downgrade the specifications of a cluster. [DO NOT TRANSLATE]
Scale in or out the computing capacity: Add or delete read-only instances. For more information about the detailed procedures, see Add or delete read-only instances.
Scale in or out the storage capacity: The storage capacity is provisioned in a serverless model. As your data increases in size, the storage is automatically expanded.
This topic describes how to upgrade or downgrade the specifications of a PolarDB cluster. It will take only 5-10 minutes for the new specification of each instance to take effect.
Specification upgrades or downgrades only apply to clusters. You cannot change the specifications of an instance.
The specification upgrades or downgrades will not affect the existing data in the cluster.
We recommend that you modify cluster specifications during your service off-peak periods. During a specification upgrade or downgrade, the PolarDB service will be disconnected for a few seconds and some of the functions will be disabled. You will need to reconnect from your applications once PolarDB is disconnected.
You can only change cluster specifications when the cluster does not have pending specification changes..
- Log on to the PolarDB console.
- Select a region.
- Select Clusters, and find your targeted cluster. Click More in the Actions column of the specific cluster, and then select Upgrade Cluster or Downgrade Cluster.
- Select a specification.
Note All instances in a cluster have the same specifications.
Read and accept the Terms of Service, and click Pay Now.Note It will take only 5-10 minutes for the new specification of each instance to take effect.