This IBM TotalStorage SAN Switch option is designed for mid-range and small to medium business (SMB) SAN applications with 16 Fiber Channel ports, eight shortwave fiber optic transceivers, dual fixed power supplies, two rack-mounted power distribution unit jumper cords and fans in 1U rack height. The base H16 SAN Switch includes Fabric Watch, an intelligent fabric monitor, to help improve performance, identify and isolate potential faults to optimize fabric-wide performance. The base H16 switch function supports connection to other IBM TotalStorage SAN switches in a four-switch fabric plus support for optional full-fabric activation. It is designed to deliver next-generation performance and function for Fiber Channel storage area networks.