A storage method including: controlling transfer of data between a host system and a storage device using a plurality of controllers connected to the host system and the storage device, where the controllers are interconnected via a data transfer path; and controlling the controllers using a plurality of processors connected to the controllers, wherein each of the plurality of controllers is connected to the same or a different processor; and wherein a first processor connected to a controller that received a transfer command from the host system creates, as header information of a packet of a first controller to become a transfer source: identifying information of the first controller and a second controller to become a transfer destination, identifying information of the transfer path between the first controller and the second controller, and identifying information of a controller which is between first and second controller to be routed upon transferring the data.