Storage system and data relocation control device
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Abstract
The present invention achieves data relocation in accordance with a user'"'"'s policies, in an environment where a plurality of storage devices are combined. The volumes belonging to storage devices A-D are managed virtually integrally. A host recognizes a plurality of storage devices A-D as a single virtual storage device. The user is able to group the volumes belonging to the storage system, as a plurality of storage layers 1-3. For example, storage layer 1 can be defined as a high-reliability layer, storage layer 2, as a low-cost layer, and storage layer 3, as an archive layer. Each storage layer is constituted by a group of volumes corresponding to respective policies (high reliability, low cost, archiving). The user designates volumes to be moved V1 and V2, in group units, and indicates a storage layer forming a movement destination, whereby the data is relocated.
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Citations
36 Claims
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1-16. -16. (canceled)
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17. A system for storing data comprising:
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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 to 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. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A system for storing data comprising:
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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. - View Dependent Claims (25, 26, 27, 29, 30)
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31. A data migration method in a system including a first storage system and a second storage 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 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. - View Dependent Claims (32, 33, 34, 35, 36)
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Specification