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

Billing

A free quota 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.

Backup method Total size of backup files Free quota (unit: GB; rounded only up to the next integer) Unit price (USD/GB)
Snapshot backup Total size of backup files = Size of data backup files + Size of log backup files

You can log on to the ApsaraDB RDS console and go to the Basic Information page of your RDS instance. Then, you can view the total size of backup files in the lower-right corner of the page.

Free quota = 200% × Purchased storage capacity 0.00004
Physical backup Free quota = 50% × Purchased storage capacity
  • RDS instances that use standard SSDs or enhanced SSDs (ESSDs): 0.00004
  • RDS instances that use local SSDs: 0.00020
Note The backup storage fee can be deducted from your Database Backup (DBS) storage plan. For more information, see Storage fees.

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.

Reduce backup storage fees

  • Reduce the size of backup files. To achieve this, you can delete backup files, reduce the backup frequency, or shorten the backup retention period. For more information, see Back up an ApsaraDB RDS for SQL Server instance.
  • Increase the free quota for backup storage. To achieve this, you can expand the storage capacity of your RDS instance. For more information, see Change the specifications of an ApsaraDB RDS for SQL Server instance.

    The free quota varies based on the storage capacity of your RDS instance. For example, if you back up your RDS instance by using the physical backup method and expand the storage capacity of your RDS instance from 150 GB to 300 GB, the free quota increases from 75 GB to 150 GB.