| 主权项 |
1. A storage system for providing a virtual storage apparatus that comprises a plurality of virtual storage resources associated with a plurality of real storage resources of a plurality of real storage apparatuses, wherein the plurality of real storage apparatuses include a first real storage apparatus and a second real storage apparatus, wherein the first real storage apparatus receives a virtual storage resource control command of a predetermined type which specifies a first virtual storage resource in the virtual storage apparatus and a second virtual storage resource associated with the first virtual storage resource, wherein the first real storage apparatus refers to management information for managing association relations between the plurality of virtual storage resources and the plurality of real storage resources, to identify a first real storage resource which is associated with the first virtual storage resource and one of the plurality of real storage apparatuses that comprises the first real storage resource, wherein, when the one of the plurality of real storage apparatuses that comprises the first real storage resource is the first real storage apparatus, the first real storage apparatus performs one of selecting a second real storage resource which is associated with the second virtual storage resource from real storage resources that belong to the first real storage apparatus, and creating the second real storage resource, and wherein, when the one of the plurality of real storage apparatuses that comprises the first real storage resource is the second real storage apparatus, the second real storage apparatus performs one of selecting the second real storage resource from real storage resources that belong to the second real storage apparatus, and creating the second real storage resource following an instruction from the first real storage apparatus,
wherein the first virtual storage resource is a virtual primary volume, wherein the second virtual storage resource is a virtual secondary volume which forms a virtual local copy pair with the virtual primary volume, wherein the virtual storage resource control command instructs to create the virtual local copy pair with the virtual primary volume and the virtual secondary volume specified, wherein the first real storage resource is a first real volume which is associated with the virtual primary volume in the management information, wherein, when one of the plurality of real storage apparatuses that comprises the first real volume is the first real storage apparatus, and one of the plurality of real storage apparatus that comprises a real volume associated with the virtual secondary volume in the management information is a storage apparatus that is not the first real storage apparatus, the first real storage apparatus creates a new real volume which is associated with the virtual secondary volume, and wherein, when the one of the plurality of real storage apparatuses that comprises the first real volume is the second real storage apparatus, and the one of the plurality of real storage apparatuses that comprises the real volume associated with the virtual secondary volume in the management information is a storage apparatus that is not the second real storage apparatus, the second real storage apparatus creates a new real volume that is associated with the virtual secondary volume, following the instruction from the first real storage apparatus. |
