Patent ID: 7162580
Filing Date: 2007-01-09
Classification: G06F

Abstract:
1. A remote copy control method for remotely copying a plurality of volumes located in a plurality of disk subsystems, wherein a host computer is connected to at least one of the plurality of disk subsystems, the remote copy control method comprising the steps of: obtaining an identifier of a first disk subsystem of a first volume from a volume pair list for the host computer connected to at least one of the disk subsystems, wherein the first volume is a copy source or a copy destination of a volume pair, wherein the volume pair is a remote copy target in the disk subsystems, and wherein the volume pair list registers an identifier of the first volume and an identifier of the first disk subsystem of the first volume; searching a route list for route information including the identifier of the first disk subsystem, wherein the route list registers an identifier of a plurality of second disk subsystems for relaying a command transmitting route for the first disk subsystem and information for determining an identifier of a third disk subsystem connected to the host computer from among the second disk subsystems; obtaining an identifier of the third disk subsystem found in the searched route information; and issuing, to the third disk subsystem corresponding to the obtained identifier, a remote copy command of the first volume including, an input information, the identifier of the second disk subsystem and the identifier of the first disk subsystem.