It is characterized by the use of Fibre Channel with a high transmission rate and the server network, or the internal components of the SAN network, so that the entire storage network has a very wide bandwidth, which guarantees high-performance data storage. In this kind of SAN storage network, the key role that we often hear is the Fibre Channel switch (also known as "Fibre Channel Switch" and "SAN Switch"). Because this is a new type of device, and there are too many differences between the Ethernet switches we usually see and use (mainly in the support of the protocol), so many readers have even used SAN storage networks. Enterprise users are ignorant of SAN switches. To this end, this article will introduce you to the matters that need to be paid attention to when purchasing SAN switches. In fact, it is to introduce the main features of SAN switches. Let's take a brief look at the origin of the SAN switch, which will allow us to deepen our understanding of the SAN switch, no longer full of "mysterious" colors.