Rebuilds any (or all) BackEnd(s). Designed for Advanced Users. This feature is not to be confused with Backing Up XML Files and/CoverArt Files. This powerful feature is particularly important in cases where the BackEnd(s) have grown in size and you whish to reclaim any possible space back. By re-building the BackEnd, process which will migrate all data from the exiting (selected) BackEnd (or all BackEnds if no BackEnd was selected), to the newly built BackEnd, reclaim any unused space ie. compact the newly built BackEnd and reclaim any available space back to the Hard Drive.
For this process to work, it is necessary to have the needed BackEnd Template available (BackEnd Templates are installed during a normal/Default installation of Metadata Utility).
To learn about how to manage the location of the BackEnd(s) as well as the BackEnd Tempalte(s) click here