Abstract: An embodiment of this invention is an information storage system comprising a plurality of storage systems connected to be able to communicate. Each of the plurality of storage systems includes default storage system identification information which is the same to the plurality of storage systems, common volume identification information for uniquely identifying volumes provided by the plurality of storage systems to a host computer among the plurality of storage systems, and a controller configured to return the default storage system identification information to the host computer in response to a request from the host computer and to process a read or write request to a volume accompanying the common volume identification information from the host computer.

Abstract: An embodiment of this invention is an information storage system comprising a plurality of storage systems connected to be able to communicate. Each of the plurality of storage systems includes default storage system identification information which is the same to the plurality of storage systems, common volume identification information for uniquely identifying volumes provided by the plurality of storage systems to a host computer among the plurality of storage systems, and a controller configured to return the default storage system identification information to the host computer in response to a request from the host computer and to process a read or write request to a volume accompanying the common volume identification information from the host computer.

Abstract: An embodiment of this invention is an information storage system comprising a plurality of storage systems connected to be able to communicate. Each of the plurality of storage systems includes default storage system identification information which is the same to the plurality of storage systems, common volume identification information for uniquely identifying volumes provided by the plurality of storage systems to a host computer among the plurality of storage systems, and a controller configured to return the default storage system identification information to the host computer in response to a request from the host computer and to process a read or write request to a volume accompanying the common volume identification information from the host computer.

Abstract: An embodiment of this invention is an information storage system comprising a plurality of storage systems connected to be able to communicate. Each of the plurality of storage systems includes default storage system identification information which is the same to the plurality of storage systems, common volume identification information for uniquely identifying volumes provided by the plurality of storage systems to a host computer among the plurality of storage systems, and a controller configured to return the default storage system identification information to the host computer in response to a request from the host computer and to process a read or write request to a volume accompanying the common volume identification information from the host computer.

Abstract: It is provided a storage subsystem, comprising: a storage device which provides a volume for storing data; a processor which executes a program for controlling the storage subsystem; a memory which stores data used by the processor; and a port which is coupled to another storage subsystem. The memory stores interface management information, which holds a use of the port in migration, and port management information, which holds a use of a port of the another storage subsystem in migration. The processor refers to the interface management information and the port management information to identify a port of the another storage subsystem which is permitted to communicate with the port of the storage subsystem, in order to determine a communication zone of the port coupled to the another storage subsystem for migration.

Abstract: An object of the present invention is to properly estimate a storage capacity or the performance of a storage device to be prepared in a remote site. In an information system 1, a first storage device 100 stores data of a first host computer 200 in a first virtual volume provided by thin provisioning using a first volume as a resource, and a second storage device 100 stores data of a second host computer 200 in a second virtual volume provided by thin provisioning using a second volume as a resource. An information apparatus (management device 400) in the information system 1 acquires the history of data writing in the new data area of the first volume on the basis of the base volume and the differential volume, then generates a transition of an allocation capacity of a storage area of the first volume on the basis of the acquired history of data writing in a new data area of the first volume.

Abstract: An object of the present invention is to properly estimate a storage capacity or the performance of a storage device to be prepared in a remote site. In an information system 1, a first storage device 100 stores data of a first host computer 200 in a first virtual volume provided by thin provisioning using a first volume as a resource, and a second storage device 100 stores data of a second host computer 200 in a second virtual volume provided by thin provisioning using a second volume as a resource. An information apparatus (management device 400) in the information system 1 acquires the history of data writing in the new data area of the first volume on the basis of the base volume and the differential volume, then generates a transition of an allocation capacity of a storage area of the first volume on the basis of the acquired history of data writing in a new data area of the first volume.