As Dellâ„¢ EqualLogicâ„¢ PS Series storage matures, additional features continue to add value to the product. EqualLogic controller firmware version 5.1 (and later) supports a new set of networking standards called Data Center Bridging (DCB). DCB unifies the communications infrastructure for the data center, supporting design of a single, shared networking infrastructure that meets the communications needs for all IT operations.