Patent ID: 8661210
Filing Date: 2014-02-25
Classification: G06F

Abstract:
1. A management device that manages data migration between volumes in a storage system in which a normal volume and a virtual volume coexist as volume types of the volumes for reading and writing data, the normal volume being a volume to which a fixed storage area is allocated in advance and the virtual volume being a volume to which a storage area is dynamically allocated according to use status, wherein the management device comprises: a display unit that displays information; and a control unit that collects information regarding the volumes, and based on the collected information, causes the display unit to separately display, for the normal volume and the virtual volume, at least a total logical capacity of the normal volume and a total logical capacity of the virtual volume, each of the total logical capacities being a summation of logical capacities that include an unallocated capacity, and causes the display unit to display, when the volume types of a data migration source volume and a corresponding data migration destination volume are different from each other, specific information indicating the volume types are different from each other, wherein the control unit causes the display unit to display a migration plan creation screen including a first field for designating a migration group and a second field for designating a tier, and creates a migration pair between each volume as the data migration source volume that belongs to the migration group input in the first field and any of volumes as the data migration destination volume within the tier input in the second field, and wherein the control unit causes the display unit to display volume names, which indicates each of the data migration source volumes and each of the corresponding data migration destination volumes, the data migration status of the created migration pair, the volume types of the migration pair, logical capacities of the migration pair, and an occupied capacity of the data migration source volume.