ArchiverFS Free Edition 3.459
Released in 2002 and benefiting from a sustained period of development and evolution, ArchiverFS is the most reliable, cost effective and simplest solution to congested file servers available.
Crucially, ArchiverFS doesn't try to shoehorn files (or even pointers to files) into a database. Yet through clever use of features baked into the Windows OS and NTFS file system you get all the features you would expect. The free version does not time expire and can process and unlimited ammount of data. The only limitation is a cap of 100 files processed each time a job runs.