The invention concerns an arrangement for fastening of electrical andor electronic power components to a circuit board, wherein the electrical andor electronic power components are mechanically and removably fastened to the board. The server-side mechanism preferably comprises a pair of processes: a daemon process and a servlet process. The slide plate slides over the support plate through the link. Exemplary methods and apparatuses select a plurality of video frames from the video medium, and obtain the pixel data values of a subset of pixels of each selected frame. When there occurs a failure in a copy source storage system 2, a copy source volume for remote copy target volumes using the storage system 2 having a failure as their copy source is selected newly from the registered copy source volumes, and remote copy is resumed. This pivotable arm is integrally arranged on a rotary shaft and pivots responsive to pivotal control of a joystick in a predetermined direction or a direction opposite to the predetermined direction.