An administration device, comprising: a first storage unit configured to store a first communication state between a plurality of interconnected information processing devices or between one of the plurality of interconnected information processing devices and an input-output device; a second storage unit configured to store a second communication state between the input-output device into or from which data is input or output and an input-output processing device that inputs or outputs data into or from the input-output device; a reception unit configured to receive a transfer request for requesting data transfer to the input-output device from one of the plurality of information processing devices; a specifying unit configured to, in response to the transfer request received by the reception unit, determine whether a communication path to the input-output device is already selected and when determining that the communication path to the input-output device is already selected, specify one of the plurality of information processing devices or an input-output processing device as a transfer destination from the selected communication path, and when determining that the communication path is not selected, select a communication path to the input-output device according to the first communication state stored in the first storage unit and the second communication state stored in the second storage unit, and specify one of the plurality of information processing devices or an input-output processing device as a transfer destination according to the selected communication path; and a transmission unit configured to transmit, to the information processing device having issued the transfer request, an identifier for identifying the information processing device or the input-output device specified by the specifying unit. a first storage unit configured to store a first communication state between a plurality of interconnected information processing devices or between one of the plurality of interconnected information processing devices and an input-output device; a second storage unit configured to store a second communication state between the input-output device into or from which data is input or output and an input-output processing device that inputs or outputs data into or from the input-output device; a reception unit configured to receive a transfer request for requesting data transfer to the input-output device from one of the plurality of information processing devices; a specifying unit configured to, in response to the transfer request received by the reception unit, determine whether a communication path to the input-output device is already selected and when determining that the communication path to the input-output device is already selected, specify one of the plurality of information processing devices or an input-output processing device as a transfer destination from the selected communication path, and when determining that the communication path is not selected, select a communication path to the input-output device according to the first communication state stored in the first storage unit and the second communication state stored in the second storage unit, and specify one of the plurality of information processing devices or an input-output processing device as a transfer destination according to the selected communication path; and a transmission unit configured to transmit, to the information processing device having issued the transfer request, an identifier for identifying the information processing device or the input-output device specified by the specifying unit.