There is disclosed a method and architecture for establishing independent, secure, trusted sub-networks within a storage area network. The second clock signal is used as an input to a suitable clocked circuit of a type that benefits from optical isolation, such as an analog-to-digital converter. In one embodiment, the control system uses a fitness function that is based on the physical laws of minimum entropy. An acid material may be optionally added to the metal forming liquid, the acid serving to maintain the pressure and flow rate at normal levels by controlling clogging in the filter. One light source includes a plurality of LEDs arranged in a linear array. In some embodiments, the device includes a cellular telephone.