1. A relation management control program, making a computer execute management processing of relation between at least two devices among an information processor device, a switch device and a storage device configuring a network, which also make the computer execute: a device component information acquisition process, which acquires device component information indicating a configuration of at least two of the devices; an element information creation process, which creates element information corresponding to the device component information based on the device component information acquired by the device component information acquisition process; an association process, which associates each piece of the element information to each other based on a plurality of pieces of element information created by the element information creation process; and a branch selection information creation process, which creates branch selection information for selecting one piece of element information from a plurality of pieces of element information.