PolarDB:Billing method 3: subscription

Scenarios

The total amount of data of the clusters in specific regions under your Alibaba Cloud account is smaller than 10 TB, and the amount of data generated by your business seldom fluctuates.

Limitations

• The amount of storage capacity that you purchase applies only to a single cluster. This may cause resource waste, because the cluster may consume less storage capacity than the purchased amount.

• The storage capacity of a cluster can be scaled up but cannot be scaled down. For more information, see Manually scale up the storage capacity of a cluster.

• After the purchased storage capacity is exhausted, your cluster still can be used normally. Data that exceeds the purchased storage capacity is billed on a pay-as-you-go basis. If you purchase a storage plan, the storage plan is first deducted for the data that exceeds the purchased storage capacity. After the storage plan is exhausted, the pay-as-you-go billing method is used. For example, you purchase 100 GB of storage space that uses the subscription billing method and a storage plan of 50 GB, but have 200 GB of data. For the 100 GB of data that exceeds the purchased storage capacity, 50 GB is deducted from the storage plan. The remaining 50 GB is billed on a pay-as-you-go basis.

Pricing

The purchased storage capacity is deducted based on storage usage.

Use the subscription billing method

For more information about how to use the subscription billing method for your clusters, see Purchase a subscription cluster.