Patent ID: 8205052
Filing Date: 2012-06-19
Classification: G06F,H04L

Abstract:
1. A computer system comprising: at least one storage having one or more volumes configured to serve as a storage region; a host computer accessing the one or more volumes; and a management computer coupled to the at least one storage, wherein the management computer stores pair management information indicating: wherein the first pair status and the second pair status can be changed between a plurality of status types for controlling copying or not-copying data from the first and second copy source volume to the first and second copy target volume, based on an operation request, wherein the management computer stores volume status information indicating a volume status for each volume, the volume status of said each volume being derived from: wherein the management computer stores shared volume authority information for each shared volume of a plurality of shared volumes, the shared volume authority information providing authority to differing users to institute differing operations on a shared volume, dependent upon differing volume statuses of the shared volume, the shared volume authority information indicating that: wherein the management computer executes to: