A method includes receiving, at or from a station STA, a plurality of packets. The gas detector comprises a sensing means and a detecting means for detecting electrical capacitance variance of the sensing means and for further identifying the volatile organic and volatile inorganic substances. A digital processing unit is connected to each encoding unit. The conjugated surface zones may have different configurations. Next, a second interlayer dielectric film is deposited on the first interlayer dielectric film so that the gaps between the gates are completely filled. Data is stored to the drives of the network according to a RAID storage methodology and without the necessity for shared external storage.