Billing Mode

You will be charged for the configuration and data transfer based on a pay-per-use or yearly/monthly basis.

**Table 1** Billing items
Item	Description	Rule
Configuration fee	Configuration fees are generated when you use computing and storage resources and process data.	In pay-per-use mode, you are charged based on the actual usage on an hourly basis. If the usage duration is less than one hour, you are charged a full hour. In yearly/monthly mode, you need to make upfront payments on a yearly or monthly basis.
Data transfer fee	Data transfer fees are generated when you process or transfer data through a public network (excluding VPN, VPC, Direct Connect, and CC networks).	You are billed based on the actually used public network traffic in GB.

Real-time migration supports only the pay-per-use billing mode.

Real-time synchronization and DR tasks support pay-per-use and yearly/monthly billing modes.

Billing Scenarios

Table 2 shows the common billed data flow types.

**Table 2** Billing description
Function	Billing Mode	Commercial Data Flow	Direction
Real-time migration	Only the pay-per-use billing is supported. For details, see Pay-Per-Use.	MySQL->MySQL MySQL->DDM MySQL->GaussDB(for MySQL) MongoDB->DDS MySQL schema and logic table -> DDM	To the cloud
Real-time migration		MySQL->MySQL DDS->MongoDB	From the cloud
Backup migration	Free of charge	-	-
Real-time synchronization	Pay-per-use and Yearly/Monthly For details about pay-per-use billing, see Pay-Per-Use. For details about the yearly/monthly billing, see Yearly/Monthly.	MySQL->MySQL MySQL->PostgreSQL MySQL->GaussDB(DWS) MySQL->GaussDB(for MySQL) DDM->MySQL DDM->GaussDB(DWS) DDM->DDM Oracle->MySQL Oracle->GaussDB(DWS) Oracle->GaussDB(for MySQL) Oracle->DDM Oracle->PostgreSQL Oracle -> GaussDB primary/standby Oracle -> GaussDB distributed PostgreSQL->PostgreSQL MongoDB->DDS	To the cloud
		MySQL->MySQL MySQL->Oracle MySQL->CSS/ES MySQL->Kafka DDM->MySQL DDM->Oracle DDM->Kafka DDS->MongoDB GaussDB(for MySQL)->MySQL GaussDB(for MySQL)->GaussDB(DWS) GaussDB(for MySQL)->Kafka GaussDB(for MySQL)->Oracle GaussDB(for MySQL)->CSS/ES GaussDB primary/standby -> Oracle GaussDB primary/standby -> GaussDB(DWS) GaussDB primary/standby -> Kafka GaussDB distributed -> Oracle GaussDB distributed -> GaussDB(DWS) GaussDB distributed -> Kafka PostgreSQL->Kafka	From the cloud
		MySQL->CSS/ES MySQL->Kafka Oracle -> GaussDB primary/standby Oracle -> GaussDB distributed Oracle->Kafka PostgreSQL->Kafka GaussDB primary/standby -> Oracle GaussDB primary/standby -> Kafka GaussDB distributed -> Oracle GaussDB distributed -> Kafka	Self-built -> Self-built
Data subscription	In the open beta test (OBT) phase, you can apply for the service free of charge.	-	-
Real-time disaster recovery	Pay-per-use and Yearly/Monthly For details about pay-per-use billing, see Pay-Per-Use. For details about the yearly/monthly billing, see Yearly/Monthly.	MySQL->MySQL	Current cloud as standby Current cloud as active Dual-Active DR
		MySQL->GaussDB(for MySQL)	Current cloud as standby
		GaussDB(for MySQL)->GaussDB(for MySQL)	Current cloud as standby Current cloud as active Dual-Active DR