In Backup Mode, SiteShelter copies files from an Internet site to the Local Storage location. When files are changed on the Internet site, they are updated in Local Storage.
If a Number of Versions is defined in the Local Storage tab, SiteShelter stores previous versions of files that change under a special folder structure below the Backup Location, called \PreviousVersions.
In Backup Mode, files are never erased from Local Storage until they exceed the Number of Versions setting.