Billing mode	Pay-as-you-go
Payment Method	Settled every hour
Billing Unit	USD/GB * hour
Minimum Service Time	Settle by hour, purchase at any time and release at any time.
Application Scenario	Applicable to scenarios where the demand for devices fluctuates greatly in an instant, such as e-commerce flash sales.

Note:

The billing feature is not supported by cloud disks in Cloud Dedicated Cluster (CDC).

Billing Overview of Snapshot

Snapshot charging is based on the total number of snapshots for users, and pushed to billing according to the actual total space occupied by snapshots per hour.
The snapshot charging method is a post-paid method. It needs to be opened (it will be judged at the first push, and if it is not opened, the billing opening API will be called for opening). This is not perceived by the user), but there is no need to freeze and unfreeze.
The lifecycle of snapshot billing connection billing management. It provides 3 APIs: service suspension, correction and destruction.
Regular snapshot. The created snapshot will have an expiration deletion time, and after expiry, it will be automatically deleted -> billing is required.
Snapshot created when a full machine image is created -> billing is required.

Take User+Region+Total Snapshot Capacity as the measurement unit.
Total capacity: Count the total capacity of all snapshots of a user in a certain region based on the actual size of snapshots.
Total regional capacity monitoring: The total snapshot capacity of each user region every 10 minutes needs to be reported to the monitoring side.

Arrears Definition: Account remaining amount <= 0.
Freezing Policy:
- Feature Freezing
  Once the user account is in arrears, all user snapshot operation features (create, rollback, cross-regional replication, create cloud disk, create image, periodic snapshot creation/modification/associated cloud disk/availability, and no longer create snapshot when regular snapshot arrives at the point) are stopped except for Terminate.