Database Backup (DBS) provides the multi-level storage pool feature that allows you to configure multiple levels of storage pools across regions in a backup policy. DBS automatically dumps data across the storage pools to help you implement geo-redundancy.

Background information

Geo-redundancy significantly enhances data security. You can perform backup and restoration operations in the nearest regions to reduce the recovery point objective (RPO) and recovery time objective (RTO) of your databases.

The traditional geo-redundancy method requires the Internet or private lines to synchronize data across regions. It has the following disadvantages:
  • Network insecurity
  • Limited backup speed
  • High technical costs
  • Monotonous backup policy

Overview

The multi-level storage pool feature of DBS supports automatic data dump. DBS integrates with Cloud Enterprise Network to deliver high-quality, efficient, and stable network transmission. This helps you back up and synchronize data across regions with ease.

DBS also allows you to flexibly configure geo-redundancy policies and backup lifecycles, which greatly reduces your operation and storage costs. For example, you can configure a backup policy to perform full backups in a region on a daily basis and dump the backup data to other regions on a weekly basis. You can reduce the geo-redundancy frequency to reduce storage costs.

Prerequisites

  • Your application for the storage pool feature during the public preview is approved. For more information, see Note.

  • A backup schedule is purchased in one of the following regions: China (Hangzhou), China (Shanghai), China (Qingdao), China (Beijing), China (Zhangjiakou), and China (Shenzhen).

Limits

You can use backup schedules that are created only by using batch backup.

Procedure

  • If no backup schedule is created, perform the following operations:
    1. Add a database to DBS. For more information, see Add a data source.
    2. Create a backup policy that uses multi-level storage pools. For more information, see Create a backup policy that uses multiple levels of storage pools.
      Note We recommend that you select a level-1 storage pool that resides within the same region as the data source and select level-2 storage pools that reside in other regions. For example, select a level-1 storage pool in the China (Hangzhou) region and a level-2 storage pool in the China (Beijing) region.
    3. Create a backup schedule and select the backup policy configured in the preceding step. For more information, see Back up one or more databases.

      When the status of the backup schedule changes to Running, the configuration is complete. Then, DBS executes the backup and dump tasks based on the backup schedule.

  • If a backup schedule is created, perform the following operations:
    1. In the left-side navigation pane of the details page of a backup schedule, click Backup Strategies. Modify the backup policy of a backup schedule
    2. Configure a level-1 storage pool and one or more level-2 storage pools for the backup policy of the backup schedule. For more information, see Modify the backup policy of a backup schedule.
      Note We recommend that you select a level-1 storage pool that resides within the same region as the data source and select level-2 storage pools that reside in other regions. For example, select a level-1 storage pool in the China (Hangzhou) region and a level-2 storage pool in the China (Beijing) region.

      After the configuration is complete, DBS executes the backup and dump tasks based on the backup schedule.