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    Data Management:Backup set management

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    Data Management:Backup set management

    Last Updated:Dec 15, 2025

    Data Disaster Recovery provides flexible backup and restoration features for Alibaba Cloud databases and databases hosted on Elastic Compute Service (ECS). You can download cloud backup sets to your local device to enhance data security in a manual or automatic manner. The downloaded backup sets can be used to restore data to a local database, perform Excel analysis and audit, or back up data to a local device for storage.

    Overview

    Data Disaster Recovery packages and compresses backup files and converts them into downloadable CSV files. This process takes about 15 minutes. You can download backup files in a manual or automatic manner through the Data Disaster Recovery backup gateway. For more information, see Manually download a backup set and Configure automatic download of backup sets.

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    Limits and formats

    Note

    • Before you download a backup set, check its validity period.

    • The download process takes an amount of time. If the backup set that you want to download is about to expire, we recommend that you extend the retention period of the backup set in advance to prevent data from being automatically deleted during the download process.

    • After the backup set is downloaded, you can change its retention period to the original setting. For more information, see Modify the lifecycle of a backup schedule.

    Item

    Logical backup

    Physical backup

    Backup destination storage type

    Only Data Disaster Recovery built-in storage is supported. Object Storage Service (OSS) buckets are not supported.

    Only Data Disaster Recovery built-in storage is supported. OSS buckets are not supported.

    Full data

    The following types of databases are supported:

    • MySQL

    • SQL Server

    • MariaDB

    • PostgreSQL

    • Oracle

    • MongoDB

    Note

    MongoDB data is in the JSON format. Other data is in the CSV format.

    The following types of databases are supported:

    • MySQL

    • SQL Server

    Note

    • MySQL data is in the same format as the data generated by using Percona XtraBackup and is compressed.

    • SQL Server data is in the same format as the data generated by using the native backup command and is compressed.

    Incremental data

    The following type of database is supported:

    MySQL

    Note

    Data is in the native format of MySQL.

    The following types of databases are supported:

    • MySQL

    • SQL Server

    Note

    Data is in the same format as its full data.

    References

    For more information about the differences between Data Disaster Recovery built-in storage and OSS, see Built-in storage and OSS.