Help Center/ Distributed Database Middleware/ User Guide/ Backups and Restorations/ Backup Principles

Updated on 2024-07-30 GMT+08:00

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Backup Principles

DDM instances cannot be backed up manually. The system automatically backs up them from 02:00 to 03:00 GMT+08:00 every day. Metadata backup can also be triggered by any of the key operations such as deleting a schema, clearing source data after shard configuration, and deleting a DDM instance.

Figure 1 illustrates the backup process.

Figure 1 Backup principles

The metadata database stores information of your DDM instances and their associated data nodes. All of your DDM instances in different regions share the same metadata database.

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