A computer system comprising a chassis and housing removable servers supported in subchassis, each chassis having optional front or read cable access. In one example, the cylinder bank is deactivated responsive to an indication of misfire based on crankshaft acceleration and exhaust air fuel ratio. A visual change causes an automatic revision to one or more attributes of the table elements that define the regions affected by the visual change. The predicted flow rate further being previously computed measuring a set of upstream pressure values of the gas via at least one sensor. and may be used for example for micromachining. Preferably, a system and placement are eventually determined that provide the desired performance under the given fault scenarios.