Continuous data protection (CDP), also called continuous backup or real-time backup, is a storage method in which your data is automatically copied and saved whenever any change is made to that data.  In effect, CDP creates an electronic journal.  Essentially capturing every version of the data that you save.  It allows you to restore data at any point in time.

A major advantage of CDP vs a scheduled backup is the fact that it preserves a record of every transaction that takes place in your system, as changes occurs. In addition, if the system becomes infected with a virus, Trojan, or if a file becomes mutilated or corrupted and the problem is not discovered until some time later, it is always possible to recover the most recent clean copy of the affected file.

CDP is a feature that is included with both editions.