A system and associated method for optimizing usage of a clustered-network attached storage (NAS). An administration module of the clustered NAS calculates a number of nodes in the clustered NAS necessary to service a required amount of load for a specific number of client systems, and a number of addresses associated with the nodes through which the client systems accesses the clustered NAS. The load is evenly shared by all client systems and uniformly serviced by the nodes of the clustered NAS. When a node fails, the rest of operating nodes in the clustered NAS take over addresses associated with the failed node and evenly share additional load associated with an address taken from the failed node to provide seamless services for the production by the client systems.