Abstract: A technique for operating a storage network system includes storing, at one or more of a plurality of data collection storages arranged along a traveling path of a mobile body, data records received from the mobile body. An acknowledge (ACK) record including a storage identifier (ID) is transmitted, from the one or more of the plurality of data collection storages to the mobile body, in response to receiving the data records. Communication between a user storage and the one or more of the plurality of data collection storages is established via a communication network that is configured to receive the ACK record and receive and store at least one of the data records from the one or more of the data collection storages that is identified by the storage ID in the received ACK record.