A system, method, and computer program product for storing back-up files using file identicality properties are provided. A system is provided that intercepts file information from files while they are being stored to a back-up system. The files are intercepted with a file gathering interface that is in communication with one or more information source clients. The system includes an indexing engine to index file data contents of the intercepted file, a metadata engine to manage metadata concerning the intercepted file, and a triage engine to manage the file gathering interface, the indexing engine, and the metadata engine. Methods are provided for the interception of files being sent to a back-up system that take advantage of file identicality properties.