A method and system for packaging a computer system is disclosed. In some embodiments, a request is maintained to an arbiter at least until a packet exchange has been communicated andor at least until a time-sensitive packet is communicated. If the response information is a predefined specific access error in this event, the server apparatus controls the FC card \u03b1 so as to change the address of the present access to that of a disk array apparatus B that is different from the sender of the present response information, and then access the present post-change address. A sand conveying device comprising an air injection device is positioned in the bottom portion of the vessel for urging sand out of the aperture using compressed air, such that the sand is partially dewatered as the sand is urged out of the aperture.