1. A non-transitory computer-readable storage medium storing 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 storage area network, the computer being connected to the information processor device, the switch device and the storage device via a network different from the storage area network, which also make the computer execute: a device component information acquisition process, which acquires device component information indicating at least either one of physical and logical configuration of the storage area network of at least two of the devices using the network different from the storage area network; an element information creation process, which creates element information of the storage area network corresponding to the device component information using the device component information acquired by the device component information acquisition process; a recovery process, which recovers, in state of failure occurred in at least any one of the pieces of element information, the element information from the state of failure; a simulated failure setting process, which selects at least one of the element information, and sets the state of failure by causing the simulated failure in the selected element information; an association process, which associates each piece of the element information to each other using a plurality of pieces of element information created by the element information creation process so as to establish a hierarchical link structure of the storage area network; and a specific logical relation information setting process which, when intermediate element information that is element information between first element information and second element information connected to the first element information via a logical connection path on the storage area network has a branch other than the logical connection path, creates specific logical relation information of the storage area network specifying the element information connected via the logical connection path from among a plurality of pieces of adjacent element information connected to the intermediate element information via the branch on the storage area network and which sets the specific logical relation information to the first element information, wherein the first element information is an object including the specific logical relation information and at least one among a unique name of a neighboring third element information in higher- level hierarchy of the first element information, a unique name of a neighboring fourth element information in lower-level hierarchy of the first element information and a unique name of a neighboring fifth element information in the same level hierarchy of the first element information, the second element information is an object including at least one among a unique name of a neighboring sixth element information in higher-level hierarchy of the first element information, a unique name of a neighboring seventh element information in lower-level hierarchy of the first element information and a unique name of a neighboring eighth element information in the same level hierarchy of the first element information, the intermediate element information does not include the specific logical relation information, and the specific logical relation information setting process sets specific logical relation information to the first element information which constitutes the hierarchical link structure of the storage area network.