Cisco MDS 9000 Family 4-Gbps Fiber Channel switching modules deliver the intelligence and advanced features required to build truly scalable storage area networks (SANs). Delivering twice the link bandwidth of 2-Gbps Fiber Channel products, the Cisco Fiber Channel switching modules include hardware-enabled innovations designed to dramatically improve performance, scalability, availability, security, and manageability of storage networks, resulting in increased utility and lower total cost of ownership (TCO).The Cisco MDS 9000 Family 4-Gbps Fiber Channel switching modules are compatible all MDS 9500 Series Multilayer Directors as well as MDS 9216A and MDS 9216i multilayer fabric switches providing outstanding value and investment protection.