In the present invention, the fault-tolerant transmission equipment is connected to small computer system interface bus via connection system and is cooperated with the fault-tolerant transmission method of server system to manage the information transmission of independent system. When there is an error in some independent system to disable the information transmission, the information transmission may be transferred to some other normal independent system temporarily by means of the connection system of the fault-tolerant transmission equipment while the user is informed. The present invention makes it possible to whole information processing system can maintain its operation in case some error exists in partial independent system. |