The time (response time) from the issue of a display request for the display of constructional information to the obtaining of predetermined desirable constructional information and the completion of display is long when a terminal device having (a graphical user interface) to manage and control the operation of a storage system by using a storage managing server is used. To reduce response time, the storage managing server receives a first request issued from a storage managing terminal for executing the processing of the storage managing server, and a second request for executing processing including the communication of constructional information of a storage device between the storage device and the storage managing server. The storage managing server starts processing with respect to the second request before the storage managing server transmits a response to the first request to the storage managing terminal.