This topic describes the fees that you must pay to store the backup files of an ApsaraDB RDS for SQL Server instance.
If the total size of the backup files of your RDS instance does not exceed the free quota that is allocated to store backup files, you are not charged additional fees. If the total size exceeds the free quota, you must for the storage of the backup files on an hourly basis. 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 method||Total size of backup files||Free quota||Unit storage price|
|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.
|200% of the storage capacity that you purchase for your RDS instance||USD 0.00004/GB/hour|
|Physical backup||50% of the storage capacity that you purchase for your RDS instance||USD 0.0002/GB/hour|
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 the fees for backup storage
- 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.