Database Backup (DBS) allows you to back up and restore ApsaraDB databases and self-managed databases that are hosted on Elastic Compute Service (ECS) instances. You can also download backup sets from the cloud to your on-premises machine to enhance data protection. Backup sets can be manually or automatically downloaded. You can use downloaded backup sets to restore on-premises databases, analyze and audit Excel files, and back up data to on-premises storage.

How backup set download works

DBS packages, compresses, and converts backup files to downloadable CSV files. The whole process takes about 15 minutes. These files can be manually downloaded or can be automatically downloaded by using DBS backup gateways. For more information, see Manually download a backup set and Configure automatic download of backup sets.

Limits

Limit Logical backup Physical backup
Backup destination storage type Only DBS built-in storage is supported. Object Storage Service (OSS) buckets are not supported. Only DBS built-in storage is supported. Object Storage Service (OSS) buckets are not supported.
Full data The following database engines are supported:
  • MySQL
  • SQL Server
  • MariaDB
  • PostgreSQL
  • PPAS
  • Oracle
  • MongoDB
Note MongoDB data is in the JSON format. Other data is in the CSV format.
The following database engines are supported:
  • MySQL
  • SQL Server
Note
  • MySQL data is in the same format as the data in Percona XtraBackup and is compressed.
  • SQL Server data is in the same format as the data generated by the native backup command and is compressed.
Incremental data The following database engines are supported:

MySQL

Note Data is in the native format of MySQL.
The following database engines are supported:
  • MySQL
  • SQL Server
Note Backup data is in the same format as its full data.

Billing

You are charged for the traffic used to download backup sets. For more information, see Network traffic fees.