This topic describes the backup storage pricing for an ApsaraDB RDS for SQL Server 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. 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.

Backup Mode Backup Size Free Quota Unit storage price
Snapshot backup 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.

200% of the purchased storage capacity US$0.00004/GB per hour
Physical backup 50% of the purchased storage capacity US$0.0002/GB per hour

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.