Abstract: A method for machining a workpiece, includes: rotating a rotary tool around a rotation axis, the rotary tool including at least one edge positioned on an outer periphery of the rotary tool around the rotation axis; relatively moving the rotary tool toward the workpiece in a first direction so that the at least one edge cuts the workpiece by a predetermined depth while the rotary tool is rotated around the rotation axis; and relatively moving the rotary tool with respect to the workpiece in a second direction that is substantially perpendicular to the first direction and that is inclined to a third direction substantially perpendicular to the rotation axis and the first direction.

Abstract: A server rack includes a power mapping module, a power receptacle that includes a power tine communication module wherein the power receptacle is uniquely associated with a rack unit of the server rack and is collocated with the associated rack unit, and a server coupled to the power mapping module via a management network, wherein the server asserts an interrupt request to the power mapping module via the management network. The power mapping module sends a unique identifier via the first power tine communication module in response to receiving the interrupt request. The server receives the unique identifier via the second power line communication module and sends the unique identifier to the power mapping module via the management network. The power mapping module determines that the server is installed into the rack based upon the receipt of the unique identifier.