PolarDB:Manually scale storage capacity

Limitations

• You can manually scale the storage capacity of an Enterprise Edition cluster only if it uses the subscription billing method. You cannot scale the storage capacity of a pay-as-you-go cluster.

• You cannot downgrade the storage type of an existing cluster from PSL5 to PSL4.

• You cannot scale down the storage capacity of a multi-master cluster.

• You cannot scale down the storage capacity of a serverless cluster.

• You cannot scale up storage capacity during a scale-down operation. Before scaling down, carefully evaluate your current storage usage.

Impacts

• A scale-up operation does not cause a service interruption.

• Scaling down PSL4 or PSL5 storage does not cause a service interruption.

Manually scale up storage capacity

Procedure

1. Log on to the PolarDB console.

2. In the upper-left corner, select the region where the cluster is deployed.

3. Find the target cluster and click its ID.

4. On the Basic Information page, in the Distributed Storage section, click Change Storage Capacity > Manually Scale Up.

   

5. On the Change Configurations page, select the desired Storage Capacity, agree to the terms of service, and then click Buy Now.

6. On the Pay page, confirm your order and click Purchase.

Manually scale down storage capacity

Procedure

1. Log on to the PolarDB console.

2. In the upper-left corner, select the region where the cluster is deployed.

3. Find the target cluster and click its ID.

4. On the Basic Information page, in the Distributed Storage section, click Change Storage Capacity > Manual Scale In.

   

5. On the Downgrade page, select the desired Storage Capacity, agree to the terms of service, and then click Buy Now.