The epitome suite consists of several discrete pieces that provide storage deduplication services. Deduplication is defined as the elimination of redundant data. The idea behind epitome is to provide a WORM-based archive/backup mechanism that is lossless and offers permanent storage with inherent data protection properties. Additionally, it provides several metadata formats and back-ends to meet several usage models. It provides a number of services to enable three major archiving technologies: CAS, SIS, and DEDUP.