A network storage type video camera system enables to perform real-time recording and live distribution concurrently. In one embodiment the method includes flowing a process gas consisting of a silicon-containing source, an oxygen-containing source and helium into a substrate processing chamber and forming a plasma from the process gas. Of course, other claims and combinations are provided as well. In a third magnetic head of the present invention, the free layer of the magnetoresistive device includes at least two magnetic films and at least one non-magnetic film that are laminated alternately, and the thickness of the non-magnetic layer is not less than 2 nm and not more than 10 nm, and magnetostatic coupling is dominant. Upon receipt of the data frames from over the shared communications medium, another network device can discern from the virtual network identifier field in each data frame the virtual network from which the data frames were received and determine whether to forward the data frames accordingly. At least one of the elements of the anchor, which are the arms, the strap and the fork, is asymmetrical with respect to the longitudinal and vertical median plane defined by the body and the jaw.