Patent ID: 8180960
Filing Date: 2012-05-15
Classification: G06F

Abstract:
1. A control method for a storage system which comprises a plurality of information processing units, a managing computer, a storage device provided with a plurality of logical volumes, and a user interface, said control method comprising: generating a pair state in which the storage device operates such that, when a data request to a first logical volume is sent to the storage device, the storage device stores data in the first logical volume and also stores the data in a second logical volume; displaying on the user interface a correspondence between the first logical volume and the pair state with the second logical volume; instructing a change of the pair state to a split state on the correspondence displayed on the user interface of the management computer; generating the split state in which the storage device suspends the pair state operation; when changing the split state to resume the pair state, inquiring by the managing computer to an information processing unit of whether or not the second logical volume is mounted and ready to be read and written from the information processing unit; and when the managing computer finds that the second volume is mounted and ready to be read and written from the information processing unit, displaying on the user interface of the managing computer that the second logical volume is mounted on the information processing unit.