A system for generating usage statistics for a communications routing system from data generated at routing points and at end points of the system has a processor having access to the communications routing system for analyzing the data and generating the statistics, and a server having access to the processor for rendering the generated statistics into a format for display. A scale may be overlayed on or otherwise added to the images and, based on a comparison between the scale and an image of an object, the size of the object andor the distance of the object from an imaging device may be estimated or calculated. According to various embodiments, data storage devices designed for rotating access are described which include rotation-activated fluid control mechanisms. Segmented computer functions are characterized by a measure of a reliability characteristic and segregated into one or another of the separable modules according to the rank order of the reliability characteristic measures.