This topic describes the backup storage pricing for an ApsaraDB RDS for MySQL instance.

Backup storage charge

If the total size of backup files for your RDS instance does not exceed the allocated free quota for backup storage, you are not charged for the storage of the backup files. For more information, see View and manage the size of backup files for an ApsaraDB RDS for MySQL instance. If the total size exceeds the free quota, you must pay an hourly rate for the storage of the backup files. The hourly rate is calculated by using the following formula: Hourly rate for backup storage = (Total size of backup files - Free quota) × Unit storage price.
  • Total size of backup files: the total size of data backup files and log backup files. You can log on to the ApsaraDB RDS console, go to the Basic Information page for your RDS instance, and then view the total size of backup files in the lower-right corner of the page.
  • Free quota: the free quota of backup storage that is allocated to your RDS instance. If your RDS instance uses standard or enhanced solid-state drives (SSDs), the free quota is 200% of the purchased storage capacity. If your RDS instance uses local SSDs, the free quota is 50% of the purchased storage capacity. The free quota is measured in GB. It can only be rounded up to the next integer. It cannot be rounded down. You can log on to the ApsaraDB RDS console, go to the Basic Information page for your RDS instance, and then view the free quota in the lower-right corner of the page.

Usage notes

Your backup storage charge varies based on the total size of backup files. However, your backup storage charge does not vary based on the storage usage of your RDS instance. This is because backup files do not consume the storage capacity of your RDS instance.

When you analyze your backup storage charge, you must check the total size of backup files. You do not need to check the storage usage of your RDS instance.

Methods to reduce backup storage usage