This document offers a general overview of the SCSI subsystem, including the SCSI protocol, Fibre Channel (FC) and Host Bus Adapter (HBA) drivers. Additionally, it aims to map the interfaces of these. lity, technical complexity, and cost. Each interface option is likely to be more complementary to one organization than another based on the needs of the busin ss and its data storage requirements. Selection factors include addressability/ connectivity, technology comfort level, cost, distance. Because the server is to transfer SCSI commands to the storage device, you can not use the ordinary LAN IP protocol, so you need to use FC transmission, and this SAN is called FC-SAN, and later appeared in the IP protocol encapsulated SAN, can be completed through the ordinary LAN network. It is a storage area network (SAN) protocol, allowing organizations to consolidate storage into storage arrays while providing clients (such as database and web servers) with the illusion of locally attached SCSI disks. In this article, we look at each protocol and the advantages and disadvantages of each. Today's businesses are inundated with data. Effectively managing and accessing that data is a critical aspect of modern operations, and central to properly.