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Database Backup:Modify the backup policy of a backup schedule

Last Updated:Nov 30, 2023

In the Database Backup (DBS) console, you can modify the backup policy of a backup schedule that is running on the Backup Strategies page. For example, you can modify configuration items such as the full backup frequency, storage pool, and retention period.

Background information

A backup policy contains configuration items such as the backup cycle, retention period, and replication method of full backups, incremental backups, and log backups.


A backup schedule is created to back up data from multiple data sources at a time. For more information, see Back up databases.


  1. Log on to the Database Backup (DBS) console.

  2. In the left-side navigation pane, click Data Source. On the Data Source page, select a region in the upper-left corner.

  3. Click the ID of the data source that you want to manage.

  4. In the DBS backup plan section of the Data source details page, click the ID of the backup schedule that you want to manage.

  5. In the left-side navigation pane of the backup schedule details page, click Backup Strategies.


    Backup Strategies is displayed only if the backup schedule is created by using the batch backup feature. For more information, see Back up databases.

  6. Click Modify to the right of backup policy. In the dialog box that appears, configure the parameters for the backup policy. Then, click OK.



    Full Backup Method

    The method that is used to perform full backups. Valid values:

    • Periodic Backup: performs full backups on a specific periodic basis.

    • Single Backup

    Full Backup Frequency

    The interval at which full backups are performed. Default value: Every Week. You can perform one to seven full backups every week.


    This parameter is available only if you set the Full Backup Method parameter to Periodic Backup.

    Full Backup Cycle

    The days of the week when full backups are performed. You can select one or more days of a week.

    Start At

    The start time of each full backup. You can select an exact hour of the day.


    If a previous full backup is not complete at the start time of the next backup, DBS skips the next backup.

    Incremental Backup Interval

    The interval at which incremental backups are performed. Unit: minutes. Valid values: 10, 20, 30, 40, 50, and 60. Default value: 10.

    For example, if you set the interval to 10 minutes, DBS performs an incremental backup every 10 minutes.

    • This parameter is available only if you select Physical Backup as the backup method.

    • If you select Logical Backup as the backup method of a database such as a MySQL database and DBS allows you to enable the incremental backup feature for the database, incremental backups are performed in real time. For more information, see Database engines and features or Backup and restoration overview.

  7. Click Modify next to Level-1 Storage Pool (Backup). In the dialog box that appears, modify the parameters to specify a level-1 storage pool. Then, click OK.



    Storage Type

    You can select DBS Storage, NAS, or OSS For User.

    • You can select NAS or OSS For User only if you select Logical Backup as the backup method and have joined the public preview.

    • If the Storage Type parameter is set to NAS for the level-1 storage pool, you cannot configure a level-2 storage pool.

    • If you have joined the public preview and you need to set this parameter to NAS or OSS For User, you must add Apsara File Storage NAS (NAS) files systems or Object Storage Service (OSS) buckets as DBS storage pools in advance. For more information, see Add or remove a storage pool.

    Storage Pool

    The storage pool in which data backups are stored. You must select a storage pool that resides within the same region as the data source.


    You cannot modify this parameter after the backup policy template is created.

    Retention Period

    The duration for which full backups are retained. Valid values: 1 Week, 1 Month, 1 Quarter, 6 Months, 1 Year, 2 Years, 3 Years, 4 Years, 5 Years, 6 Years, 7 Years, 8 Years, 9 Years, and 10 Years. Default value: 2 Years.

    Encryption Method

    Specifies whether and how to encrypt backups. Default value: Built-in encryption. Valid values:

    • Built-in Encryption (default): Backups are encrypted.

      The server-side encryption feature is used in OSS. When you upload an object to OSS, OSS encrypts and stores the object. When you download the encrypted object from OSS, OSS decrypts the object and returns the decrypted object to you. For more information, see Server-side encryption.

    • Non-encrypted: Backups are not encrypted.