UPDATE SYSTEM, UPDATE CLIENT APPARATUS, UPDATE SERVER APPARATUS, AND PROGRAMS

An update client sends to an update server which is connected to the update client via a communication line, identification information of a driver and firmware which are included in a disk array system, and identification information of an error event which has occurred in the disk array system. The update server determines whether update of the driver and the firmware is necessary or not in accordance with a combination of the supplied identification information of the driver, the firmware, and the error event. In a case where it is determined that update is necessary, the update server sends to the update client, update data corresponding to the combination of the supplied identification information of the driver, the firmware, and the error event. The update client updates both of the driver and the firmware using the supplied update data.