A modular data and storage management system. A filter assembly is carried by the cover and includes a filter media. In this example, a new incoming network packet may trigger a determination of the flow record to be removed from memory based on the hardware time stamps of the flow records stored in memory. The inner peripheral surface of said slide bearing, which is in slide contact with said fulcrum shaft, is formed so as to have a surface roughness RA of not more than 6.