摘要:
A volume remote-copy control method is disclosed to automatically define and control a transmitting route of a remote command for remote copy control. An identifier of a first disk subsystem of a first volume is obtained from a volume pair list. The first volume is a copy source or a copy destination of a volume pair as a remote copy target in disk subsystems to a host computer connected to at least one of the disk subsystems. The volume pair list registers the identifier of the first volume and the identifier of the first disk subsystem to which the first volume belongs. Next, route information including the identifier of the first disk subsystem is searched from a route list. The roue list includes the route information for registering information for determining an identifier of a second disk subsystem for relay as a transmitting route of a command to the first disk subsystem and an identifier of a third disk subsystem connected to the host computer among the second disk subsystems. The identifier of the third disk subsystem indicated by the route information is obtained. A remote copy command of the first volume is issued to the third disk subsystem corresponding to the obtained identifier. The first volume in this case includes input information having the identifier of the second disk subsystem and the identifier of the first disk subsystem.
摘要:
A method for remotely copying volumes is disclosed. An identifier of a first disk subsystem of a first volume is obtained from a volume pair list. The first volume is a copy source or a copy destination of a volume pair. Route information including the identifier of the first disk subsystem is searched from a route list, which includes route information for determining an identifier of a second disk subsystem that relays a transmitting route of a command to the first disk subsystem and for determining an identifier of a third disk subsystem connected to a host computer. The identifier of the third disk subsystem indicated by the route information is obtained. A remote copy command of the first volume is issued to the third disk subsystem corresponding to the obtained identifier.
摘要:
An on-line system having a plurality of terminal equipments and host computers connectable to the terminal equipments, each host computer responsive to a job request from a terminal equipment being provided with an on-line process for transferring the control of the job request to a job execution process determined in accordance with the content of the job request, and a plurality of regular job execution processes for executing, if the job request is a regular job request, a regular job for the regular job request. The on-line control process is provided with an irregular job execution process space generating process for generating an irregular job execution process space for the irregular job execution. The irregular job execution process space generating process generates an irregular job execution process space upon the irregular job request from the terminal equipment, and calls an irregular job execution process request program for the irregular job request in the irregular job execution process space to execute an irregular job for the irregular job request.