Since switches are the core building blocks of a storage area network SAN, choosing the most appropriate switch is critical. Only the right choice of the most suitable fiber switch for the storage area network can improve the efficiency of enterprise information management and meet the most challenging needs. It can be clearly seen from the previous introduction that the SAN network is essentially different from the traditional Ethernet. However, because the network equipment manufacturers have different understandings of the SAN, a SAN with multiple device interfaces and channel protocols has emerged. system. This is the SCSI, Fibre Channel, ESCON, FICON, etc. described earlier. The channel protocol also has Fibre Channel (FC) protocol, SCSI and FCIP protocols. These different interfaces and channel types determine the deployment of the entire SAN network system in the choice of equipment is still relatively complicated. Below we introduce a few key considerations.