The reliability of storage systems is inevitable to keep smooth flow of information for an enterprise. Storage infrastructure has been evolving from direct attached storage (DAS) systems to more advanced networked storage, including network attached storage (NAS) and storage area networks (SAN). Networked storage ensures greater efficiency and manageability of storage systems. Concepts such as storage virtualization help enterprises gain resource optimization while reducing operational costs for them. Now storage has become an important part of the IT policies of an organization. This is because the network content is increasing exponentially and it's estimated that a significant part of the total hardware cost goes to  storage equipment.  It also comprises data recovery, archiving, and disaster recovery (DR) mechanisms that ensure complete information upkeep. Leading vendors are also offering information lifecycle management (ILM) solutions that take care of enterprise information for its entire lifecycle-from the time of information creation to disposal. Enterprises are required to take into account the data growth rate in their applications before making the storage strategy, which should prefer to buy storage systems that are not only reliable but also scalable and easy to manage. Further, IP-based networked storage helps companies consolidate their infrastructure, simplifying the storage administration tasks. This will, in turn, save capital as well as operating costs for the user
organizations.

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