PolarDB offers two billing methods for storage space, each with a different pricing plan: pay-as-you-go and subscription.
Introduction and comparison
The PolarDB storage classes PSL4 and PSL5 are billed based on storage capacity. The following table compares the two billing methods.
Billing method | Storage cost calculation | Benefits | Scenarios |
Pay-as-you-go by capacity | Charged based on the actual storage space your data uses. Fees are deducted from your account hourly. | Flexible | Small total storage usage for all clusters in a region under your Alibaba Cloud account, with frequent fluctuations in business volume. |
Subscription by space | Pay for the cluster's storage space in advance when you create it. | Cost-effective | Total storage usage for all clusters in a region under your Alibaba Cloud account is less than 10 TB, and business volume does not fluctuate frequently. |