Defrag helps broadcasters cut the cost of expensive media by automatically scanning the archive for volumes from which the majority of clips have been deleted. Any valid clips are moved to another area of the archive, and the original volumes are then re-cycled into the archive media pool, to be re-used by FlashNet.

Defrag works around a simple set of user-defined rules. Each rule specifies the amount of useful data that a piece of media should contain before it is defragged. As users delete clips from the UID database the media contains less and less useful data. When the defined limit is reached, the media is placed into the defrag queue, and any useful clips that remain on the media are moved to other volumes. The 'empty' media is then re-labelled and added back into FlashNet's pool of available volumes, to be re-used in the day-to-day archive operations.

Defrag rules can be tailored precisely to fit the needs of the archive. There is no limit to the amount of rules that can be created, or to the amount of media groups that can be defragged.