PolarDB:Manually scale up or scale down storage capacity

Limits

• You can manually scale up or scale down the storage capacity of an Enterprise Edition cluster only if the cluster uses the subscription storage billing method.

• 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 increase the storage capacity during storage scale-down. Before you scale down storage, assess the current storage usage levels to ensure that the reduction does not negatively impact your storage requirements.

Impacts

• Storage scale-up does not cause service interruption.

• PSL4 or PSL5 storage scale-down does not cause service interruption.

Manually scale up storage capacity

Procedure

1. Log on to the PolarDB console.

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

3. Find the cluster and click its ID.

4. In the Distributed Storage section of the Basic Information page, choose Change Storage Capacity > Manually Scale Up.

   

5. On the Change Configurations page, select the required storage capacity, select the Terms of Service, and then click Buy Now.

6. On the Purchase page, confirm the 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 in which the cluster is deployed.

3. Find the cluster and click its ID.

4. In the Distributed Storage section of the Basic Information page, choose Change Storage Capacity > Manually Scale In.

   

5. On the Downgrade page, select the required storage capacity, select the Terms of Service, and then click Buy Now.