Timothy Stammers

Block-Level Data Deduplication Architectures.
"Ocarina uses a very different de-duplication technique to other suppliers, which involves 3D matrix representations of image and other content boundaries. According to Ocarina, this provides around a ten-fold reduction in the volume of home directories or mixed image and text data, and a three-fold reduction of image data only (including compressed images such as JPEGs). Although other de-dupe vendors talk of a typical reduction of 20:1 or more, that is for repetitive backup data. As a comparison, NetApp says that when working with home directories, its background de-dupe function typically reduces data volumes by around a third, far less than Ocarina's three-fold reduction."