The IBM 2005-B16 with 12 active ports is a configuration of the SAN16B-2 Fibre Channel switch tailored for medium-sized network environments. This variant specifically enables 12 of its total 16 ports, providing flexibility and cost-effectiveness for organizations that do not immediately require full port activation. With performance features that include 1, 2, and 4 Gbps auto-sensing per port, it delivers robust throughput for various storage networking tasks. This version maintains all the superior functionalities found in the full 16-port model, such as ISL trunking, advanced security, and simplified management, making it a powerful asset for developing SAN infrastructures. It strikes an excellent balance between performance and scalability, offering the capacity to grow as the demands of the storage area network increase.