Continuous Data Protection (CDP), also called continuous backup or real-time backup, refers to backup of Client data by automatically saving a copy of every change made to that data, essentially capturing every version of the data that the user saves. It allows the user or administrator to restore data to any point in time.
The Bacula Enterprise CDP feature is composed of two components: An application (cdp-client or tray-monitor) that will monitor a set of directories configured by the user, and a Bacula FileDaemon plugin responsible to secure the data using Bacula infrastructure.
The user application (cdp-client or tray-monitor) is responsible to monitor files and directories. When a modification is detected, a copy of the new data into a spool directory is done. At a regular interval, a Bacula backup job will contact the FileDaemon and will save all the files archived by the cdp-client. The locally copied data can be restored at any time without a network connection to the Director.
See the CDP (Continious Data Protection) Enterprise Bacula Manual chapter for more information.
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