According to one embodiment, a memory device includes a first interconnect, a second interconnect and a pillar connected between the first interconnect and the second interconnect. Then, the insulating film is dry-etched anisotropically so that the insulating film on the lower electrode wiring is removed, and a portion of the insulating film on the lower electrode wiring is left as a sidewall. Each server node includes a data query cache and other caches that may be used in performing data queries. Desirably, each seat is supported by a seat supporting assembly that is movable between an extended position and a collapsible position. A band may be provided instead of the strap, with the band having a grommet aperture formed through a deck such that the grommet may be inserted into the opening of the bladder.