Storage expansion cabinet

The invention discloses a storage expansion cabinet which comprises a host controller and a Tri-mode chip Tri-mode switch connected with the host controller, and a storage device connected with the Tri-mode chip Tri-mode switch. Common expansion cabinet interface chip only simply supports one of a PCIE bus and an SAS bus, and Tri-mode chip Tri-mode switch can configure a physical port into an SASbus port or a PCIE bus port (wherein the SAS bus port is compatible with an SAT port). Therefore, the three-mode chip Tri-mode is connected with the host controller and the storage device, and varioustypes of storage devices can be supported, the number of the SAS bus ports and the number of the PCIE bus ports are configured according to the requirements of a client, different requirements of theclient for the expansion cabinet are met, and the repeated design of the expansion cabinet is reduced. 本发明公开了种存储扩展柜，包括主机控制器，与主机控制器连接的三模芯片Tri-mode swtich，以及与三模芯片Tri-mode swtich连接的存储设备。普通扩展柜接口芯片只是简单支持PCIE总线或者SAS总线的种，而三模芯片Tri-mod