This paper is intended not only to introduce Celerra Data Deduplication but also to draw attention to the feature's product design, which offers practical value to the customer in terms of ease of management, intelligent storage efficiency, and flexibility. This paper illustrates the concepts of Celerra Data Deduplication. It also shows how a user can use and manage deduplication on the Dell NX4 network-attached storage (NAS) system. The feature is designed to be a simple but powerful addition to an already strong portfolio of NX4 features. With this in mind, the paper discusses the interoperability between deduplication and other Dell NX4 features.