This topic describes how to calculate fees incurred by disaster recovery instances.

You use an ApsaraDB RDS for MySQL 5.6 High-availability Edition instance and select the subscription billing method. The following table describes the billing items.

Note The prices provided in this topic are for reference only. If you want to know further details about the actual prices, go to the ApsaraDB for RDS console.
Billing item Description
Instance The subscription fee incurred for an ApsaraDB for RDS instance. The subscription fee for a year is USD 2,400.
Storage capacity You are charged for the storage space of the RDS instance. The billing method is subscription. It is the same as the billing method of the instance. The price is USD 0.13/GB/month. The total cost of 2,000 GB of storage space is calculated as 2,000 x 0.13 x 12=USD 3,120.

If you do not select other billing items, the total cost is calculated as 2,400+3,120=USD 5,520 per year.

In this scenario, the business has high requirements for data reliability. Geo-disaster recovery instances must be deployed to enhance data reliability. We recommend that you use the disaster recovery instance of ApsaraDB for RDS. This can be directly created based on the original ApsaraDB RDS for MySQL instance.

Note For more information about how to create a disaster recovery instance, see Create a disaster recovery ApsaraDB RDS for MySQL instance.

After you purchase a disaster recovery instance, you must pay for the billing items described in the following table.

Note The prices provided in this topic are for reference only. If you want to know further details about the actual prices, go to the ApsaraDB for RDS console.
Billing item Description
Disaster recovery instance The pay-as-you-go fee cost by an ApsaraDB for RDS disaster recovery instance. The specifications are the same as those for the primary instance. The pay-as-you-go price is USD 0.35/hour. The cost of a year is 0.35 x 24 x 365≈USD 3,000.
Storage capacity You are charged for the storage space of the disaster recovery instance. The billing method is pay-as-you-go. It is the same as the billing method of the disaster recovery instance. The price is USD 0.0003/GB/hour. The total cost of 2,000 GB of storage space is calculated as 2,000 x 0.0003 x 24 x 365≈USD 5,200.
DTS synchronization The data of the primary instance is synchronized to the disaster recovery instance through Data Transmission Service (DTS). Therefore, you are charged based on the cost of DTS synchronization. The billing method is pay-as-you-go. The price is USD 0.349/hour. The cost of a year is 0.349 x 24 x 365≈USD3,000.
Note On the Basic Information page of the disaster recovery instance, you can click View Synchronous Job Details in the upper-left corner of the Status section to go to the DTS console and view the synchronization task details.
View the details of a synchronization task.

When you use a disaster recovery instance, the total cost of a year is calculated as 3,000+5,200+3,000=USD 11,200. Compared with user-created disaster recovery instances, ApsaraDB for RDS disaster recovery instances provide high stability and low cost for hardware and network traffic.