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For cPanel & WHM version 68

(WHM >> Home >> Backup >> Backup System Migration


The Backup System Migration interface only appears when backups exist under the legacy backup configuration. We strongly recommend the following actions:

  1. That you set up and only use the Backup Configuration interface (WHM >> Home >> Backups >> Backup Configuration) to configure your server backups.

  2. After you complete the above step, use the Backup System Migration interface to migrate existing legacy backups to the Backup system.

For additional information about backup configurations, read our Backup Configuration documentation.


The Backup System Migration interface automatically converts and migrates any Legacy Backup system files to the current Backup system. The Backup system offers the same features as the Legacy Backup system and increases efficiency and performance for your system.

We implemented the Backup System Migration interface in cPanel & WHM version 64. We plan to remove the Legacy Backup Configuration interface (WHM >> Home >> Backup >> Backup Configuration) from WHM in a future release.

Backup system conversion

To convert and migrate your Legacy Backup system files to the Backup system, click Migrate.


The Legacy Backup system only allows you to retain one retention point for incremental backups. The Backup system grants multiple retention points for incremental backups. When you migrate to the Backup system, you must update your retention point value in the Backup Configuration interface (WHM >> Home >> Backup >> Backup Configuration) or you will lose your existing backup. You can set this value in the Retention box under the Scheduling and Retention section in WHM's Backup Configuration interface (WHM >> Home >> Backup >> Backup Configuration).

If you wish to use the maximum number of retention points, set your retention point value to 9999.

The system performs the following actions when you click Migrate:

  1. The conversion and migration process creates the new /var/cpanel/backups/config file for the Backup system. This file duplicates the existing Legacy Backup configuration.
  2. After the system converts the Legacy Backup system files to the Backup system files, the system renames the Legacy Backup configuration file. 

    • The new Legacy Backup configuration filename resembles the filename format /etc/cpbackup.conf-1234567891234, where the 1234567891234 value represents the number of seconds, in Unix epoch time.

The /backup directory structure

The system stores backups inside the /backup directory in one of three different formats: compressed, uncompressed, and incremental. Each format uses a different filename extension.

Backup formatFilename extensionExample

The system distinguishes each backup by its filepath, even if the system stores the backup information under the same name. The filepath includes the backup directory where the backup resides. The following example shows the layout and structure of a /backup directory.

This directory includes daily, monthly, and weekly uncompressed backups. You can distinguish each backup type by its complete filepath. This filepath is the file's full path shown in the metafile's backup file details.

Additional documentation

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