An information management device for performing an information update process from a virtual integrated management device that manages a plurality of device configuration information management devices to the device configuration information management devices, comprises a meta information management unit and an update processing unit. The meta information management unit, which is used to store meta information, indicates from which device configuration information management devices managed information comes. The update processing unit is used to narrow down the device configuration information management devices having information. The information is the basis of information on an update process such as registration, update and deletion based on the meta information, and giving a request for the update process, such as registration, update and deletion only to the device configuration information management devices narrowed down.