To propose a computer system and a method of configuring a single name space capable of simplifying the management of GNS (Global Name Space) and alleviating the burden of an administrator.

A management device collects, from each node, management information and an access log of each of the files managed by the relevant node, extracts a user who satisfies a prescribed condition as a key person for each of the nodes based on the collected management information and access log of each of the files, specifies the key person who is common to the plurality of nodes among the extracted key persons, and requests a server to integrate, as the single name space, the plurality of nodes in which the number of common key persons exceeds a predetermined first threshold. The server integrates, as the single name space, the plurality of nodes in which the number of common key persons exceeds the predetermined first threshold in response to the request.