Which SAN component connects the host computer I/O bus to FC network

The Host Bus Adapter (HBA) is the hardware component that physically and logically connects a host computer's I/O bus (such as PCI) to a Fibre Channel network. It acts as the interface card installed in the server, converting protocol and electrical signals between the host system and the SAN fabric. Fibre cables simply transmit data, switches route traffic, and storage arrays store data - only the HBA provides the actual connection point from the host to the network.