A rotating electrical machine having cooperating rotor and stator, one of which forms a plurality of pole teeth around which individual coils are wound. Said first blocks are written to a second RAID array within a first write cycle. A first engaging portion is formed on an outer surface of a main body of the male member or an inner surface of the cylinder body, and a second engaging portion engaging the first engaging portion is formed on the inner surface or the outer surface. The temporary data storage circuit can be a RAM or Flash memory that temporarily stores a image data from the camera when a picture is taken. The tire may be coupled to a wheel on a vehicle.