Abstract: A NAS server runs a native filesystem application that manages the filesystem and also includes a virtualization component that allows third-party data processing applications to run on the NAS server substantially as though running on a separate server while allowing the applications to access filesystem information without use of the network and without the overhead of network protocols and related operating system processing. The virtualization component intercepts certain filesystem-related system calls made by the application and directs processing of those filesystem-related system calls (e.g., by the virtualization component or by the native filesystem application), bypassing certain operating system processes including those relating to network protocol processing.

Abstract: One or more nodes of a data communication system is automatically switched between two or more possible node configurations, such as between a DTE configuration and a DCE configuration, until the presence of a carrier or similar indicator signal is sensed. Configuration devices include relays and electronic switches. Control devices preferably are microprocessor based. In one aspect, upon power up or other initiation, the microprocessor toggles an output control signal so as to repeatedly toggle a switch between, e.g., DTE and DCE positions and to terminate the toggling when a link indicator is detected.