In an address driving circuit including a power recovery circuit, an energy charged in an external capacitor is established to be greater than an energy discharged from the external capacitor. While messages are exchanged, fewer than E of the messages are stored, andor fewer than N soft estimates of the codeword bits are stored. In one embodiment of the method, the cups are molded on both sides of a single mold part with hemispherical protrusions that form cavities in the cups. During the countdown, if fresh oil or an additive is added to the oil, the countdown rate is adjusted in a positive direction. The clip has a support portion projecting from an inner leg for supporting the cover of the enclosure. Logical unit number masking and VLAN configuration essential for security countermeasure of IP-SAN can be managed collectively by a system administrator so that the running cost of IP-SAN can be lowered.