Host link bandwidth authentication method for SAN storage system

The invention discloses a host link bandwidth authentication method for an SAN storage system. The method comprises the step that large file copying is carried out between a server and an internal storage of a magnetic disk array to reflect the host kink bandwidth. According to the method, the problems that the host link bandwidth of the SAN storage system cannot be measured, and the access performance of the host link section of the storage system cannot be conveniently debugged are solved, and large-file copying is carried out between the server and the internal storage of the magnetic disk array to measure the host link bandwidth, so that the data transmission speed of the SAN storage system is effectively and accurately verified, and the network bandwidth authentication technology is greatly enriched.