A method and system for managing images of virtual machines hosted by a server. The series control circuit comprises a master driving control module and N driving control modules. The absorbent article is independently movable from a folded condition, wherein the body side surfaces of the first and second portions face each other in a substantially parallel relationship under an applied pressure applied to the first and second portions, to an unfolded condition, wherein no pressure is applied to the first and second portions. A position sensor detects the impeller position in levitation and in response to the sensor’s output the magnetic bearing portion is controlled.