Storage system and data relocation control device

Details Storage system and data relocation control device Storage system and data relocation control device

2005-10-07

2008-09-09

Sough, Hyung (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S170000, C711S114000

Reexamination Certificate

active

07424585

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 layers1-3. For example, storage layer1can be defined as a high-reliability layer, storage layer2, as a low-cost layer, and storage layer3, 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 V1and V2, in group units, and indicates a storage layer forming a movement destination, whereby the data is relocated.

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