One aspect of the invention is a backup system that collectively performs the backup of data in a block form stored by a block recording device, and the back of data in a file form stored by a file recording device. Rotary members each include: a first engagement member ; and a second connector configured to be mated with the first connector. Then the solder paste is reflowed. A nozzle guard is positioned on the substrate. The inner element and outer conductor are arranged for direct coupling to the microwave power source using a waveguide.