There is described a network having redundancy properties, an Ethernet switch, and a method for configuring the network. Subsequent configuration information is stored for the plurality of logical devices coupled to the RAID controller while retaining previously written configuration information. The comparator is used for comparing the first voltage with a triangular wave generated by the triangular wave generator to output a pulse-width modulation signal. The service center then generates and transmits data associated with a plurality of points on the selected route. In some embodiments, the LBRS may determine recommendations based on content vectors associated with places andor users. In a vehicle-installed terminal apparatus, a probe data partitioning unit and an orthogonal component decomposition unit performs processes of partitioning and orthogonal component decomposition of the probe data using a feature score vector obtained from the center apparatus, to thereby reduce the probe data to be uplinked.