ApsaraDB RDS:Backup storage fees

Billable items

Billing rules

A free quota on storage is provided for each RDS instance to store backup files. If the total size of the backup files of your RDS instance does not exceed the free quota, no fees are charged. If the total size exceeds the free quota, you are charged an hourly fee for the excess backup storage that you use. The hourly fee is calculated by using the following formula: Hourly fee for backup storage = (Total size of backup files - Free quota) × Unit price of storage.

Usage notes

• The backup storage fee varies based on the total size of backup files. Backup files do not consume the storage capacity of your RDS instance. Therefore, the backup storage fee is not affected by the storage usage.

• When you analyze the backup storage fee, you must check the total size of backup files. You do not need to check the storage usage.

• Operations that involves the change of cloud disks, such as the re-creation of a secondary RDS instance, have the following impacts on an RDS instance that uses cloud disks:

  • The backup storage of the RDS instance that uses cloud disks increases. As a result, the backup storage fees increase. The code of the billable item is BackupCharged.

  • The traffic consumed by cross-region backups of the RDS instance that uses cloud disks increases. As a result, the traffic fees of cross-region backups increase. The code of the billable item is NetworkOutDuplicationSize.

  • The cross-region backup storage of the RDS instance that uses cloud disks increases. As a result, the fees generated for cross-region backup storage increase. The code of the billable item is DdrOssStorageSize.

  Note

  For example, if you perform a DDL operation on an RDS instance that uses cloud disks and the operation causes the latency of data replication to the secondary RDS instance of the RDS instance to be longer, the system may automatically re-create the secondary RDS instance to ensure service stability. This increases the fees for the related billable items.

Methods to reduce the backup storage fee

• Increase the free quota.

  You can expand the storage capacity of your RDS instance. For more information, see Change instance specifications.

  The free quota varies based on the storage capacity of your RDS instance. If your RDS instance uses local disks and you expand the storage capacity of your RDS instance from 150 GB to 300 GB, the free quota is increased from 75 GB to 150 GB.

View the backup bill

1. On the Bill Details tab, set the Statistic Item parameter to Billing Item and the Statistic Period parameter to Billing Period. Then, specify the instance name, instance ID, or bill ID and click Search.

   

2. View the details of the bills for the billable items whose names include Backup.

   The billable items vary based on the backup method. For more information, see Billable items.

Billing FAQ

• Can I disable the backup feature of my RDS instance to stop being charged if the size of the backup files that are automatically generated exceeds the free quota?

  The backup feature of RDS instances is enabled by default and cannot be disabled. However, you can modify the automatic backup strategies of your RDS instance to delete existing backup files or reduce the number of new backup files. For more information, see Delete backup files or reduce the size of backup files.

• The backup retention period of my RDS instance is shortened from x days to y days. Why does the size of backup files remain unchanged?

  If no backup files are retained for more than y days, no backup files are deleted and the size of backup files remains unchanged after you shorten the backup retention period.