Billing

Huawei Cloud RDS allows you to pay only for what you use. There is no minimum fee.

You will be billed for RDS DB instances, database storage, and additionally used backup storage.

**Table 1** RDS billing items
Billing Item	Description
Instance class	Yearly/monthly and pay-per-use billing modes are available. The billing mode of instance class is the same as that of storage for the same instance.
Database storage
Backup storage (optional)	RDS provides free backup storage of the same size as your purchased database storage. If the backup storage usage exceeds your purchased database storage, tiered pricing starts.
Public network traffic	RDS DB instances are accessible from both private and public networks. Only the traffic from public networks is billed.

RDS provides the following two billing modes:

Yearly/Monthly: This billing mode offers a larger discount than pay-per-use and is recommended for users who can predict long-term resource usage.
Pay-per-use (hourly): You can pay only for the resources you actually consume.

Modifying RDS DB instance specifications: You can modify RDS DB instance specifications based on service requirements. After the modifications are complete, you are charged based on the new instance specifications.
Scaling up storage space: You can scale up storage space based on service requirements. After scaling the storage space, you are charged based on the new storage space. Storage space can only be scaled up, not down. The minimum increment is 10 GB.