Patent ID: 8473703
Filing Date: 2013-06-25
Classification: G06F

Abstract:
1. A storage system, comprising: a first storage control apparatus comprising a first controller, a plurality of first communication ports, and a plurality of first logical volumes; wherein the first storage control apparatus is configured to receive an I/O command for any of the plurality of first communication ports connected to a host computer using a network, the plurality of first logical volumes connected to each of the plurality of first communication ports, and the plurality of first logical volumes from the host computer using the plurality of first communication ports, and to process this command; a second storage control apparatus comprising a second controller, which is configured to receive an I/O command for one or more second communication ports and one or more second logical volumes and to process this command; and a management computer, which comprises a memory and a processor configured to perform processing based on information stored in the memory, and which is configured to manage the first storage control apparatus and the second storage control apparatus, wherein, the management computer comprises a volume assignment unit configured to: is configured to assign the external volume to the host computer as a first logical volume managed by the first storage control apparatus using the migration source first communication port, whose attribute has been changed to the specified attribute.