Differential Incremental Backup

What Does Differential Incremental Backup Mean?

Differential incremental backup is a data backup process that backs up data files and objects that have been modified since the last Level 1 incremental backup. It is a backup technique that only backs up modified data since the last incremental backup, rather than the complete data sets.


Techopedia Explains Differential Incremental Backup

Differential incremental backup primarily helps in optimizing the backup process by selectively backing up data. It is a type of incremental backup technique that works after a Level 0 incremental backup has already been performed. Typically, differential incremental backup works through data backup software that has the ability to record and maintain versions of each data object. Before initiating an incremental or data backup, the backup software will look for a Level 1 backup. If there is no Level 1 backup, the software initiates backup from the Level 0 backup. For example, if an incremental backup is performed on a daily basis, differential incremental backup will back up the modified data since the last day’s backup.


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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…