Proposed is a storage controller and its control method for speeding up the processing time in response to a command in a simple manner while reducing the load of a controller that received a command targeting a non-associated logical volume. At either end of the rod, an elastic member extends downward with the distal end of each elastic member being held against the floor by the person’s foot. A method of inserting an ink stick into the delivery system of a phase change ink jet printer includes orienting the ink stick with a keyed surface facing a particular direction and identifying the position of the key feature relative to the remainder of the keyed surface.