Storage system and data relocation control device

A system for storing data comprising:

• a first storage system including a first controller and a plurality of first logical volumes configured by at least one first physical disk;
• at least one second storage system coupled to the first storage system, wherein the second storage system includes a second controller and a plurality of second logical volumes configured by at least one second physical disk;
• and
• a management computer coupled to the first storage system,
• wherein the first storage system is configured to manage a volume relation between a logical volume in the system and a virtual volume recognized by a computer using data stored in the system,
• wherein the management computer is configured to create a plurality of storage classes each including a plurality of logical volumes in the system, and manage a relation between a virtual volume and a storage class, in which a logical volume related to the virtual volume is included, and
• wherein when a virtual volume is related to a storage class by the management computer and data of the virtual volume is migrated from an original logical volume to a target logical volume, which is included in the storage class related to the virtual volume, the volume relation managed by the first storage system is updated so that a logical volume related to the virtual volume is changed from the original logical volume to the target logical volume.

A system for storing data comprising:

• a plurality of storage systems each including a controller and a plurality of logical volumes configured by at least one physical disk;
• and
• a virtualization controller coupled to the plurality of storage systems,
• wherein the virtualization controller is configured to manage volume relation between a logical volume of the plurality of storage systems and a virtual volume, configure a plurality of storage classes each including a plurality of logical volumes of the plurality of storage systems, and manage a relation between a virtual volume and a storage class, in which a logical volume related to the virtual volume is included, and
• wherein when a virtual volume is related to a storage class and data of the virtual volume is migrated from an original logical volume to a target logical volume included in the storage class, a logical volume related to the virtual volume is changed from the original logical volume to the target logical volume.

A data migration method in a system including a first storage system and a system,

• wherein the first storage system has a first controller and a plurality of first logical volumes,
• wherein the second storage system is coupled to the first storage system and has a second controller and a plurality of second logical volumes, and
• wherein the first storage system is configured to relate a logical volume in the system to a virtual volume used by a computer, comprising steps of:
• configuring a plurality of storage classes each including a plurality of logical volumes in the system;
• relating a virtual volume to a storage class;
• migrating data of the virtual volume from an original logical volume to a target logical volume, which is included in the storage class related to the virtual volume;
• and
• changing a relation between a virtual volume and a logical volume so that a logical volume related to the virtual volume is changed from the original logical volume to the target logical volume.