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US 8,527,716 B2Granted
Volume sharing method and storage system using the same
AssigneeHitachi, Ltd.
InventorsToru Tanaka, Noriko Nakajima, Yasunori Kaneda
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AssigneeHitachi, Ltd.
InventorsToru Tanaka, Noriko Nakajima, Yasunori Kaneda
Estimating the term…
Since only one golden image (GI) of a snapshot can exist and is shared among a plurality of storage apparatuses, there was a problem that migration or copy thereof deteriorates the capacity efficiency and increases the cost for managing consistency. The present invention solves the above-mentioned problem by either (1) a direct sharing method of generating a parent-child relationship of snapshots among different storage apparatuses at the time of creating differential LUs from the GI or (2) a virtual sharing method of creating virtual LUs of the GI in the respective storage apparatuses and creating differential LUs of the snapshots from the created virtual LUs, using a storage virtualization function among a plurality of storage apparatuses.
A storage system configured of two or more storage apparatuses each of which comprises an interface unit which is coupled to a computer operating a plurality of virtual computers and is coupled to the virtual computers via a network and a control unit and a storage unit which are coupled to the interface unit, wherein
A volume sharing method for a storage system configured of two or more storage apparatuses each of which comprises an interface unit which is coupled to a computer operating a plurality of virtual computers and is coupled to the virtual computers via a network and a control unit and a storage unit which are coupled to the interface unit, comprising,
Dependencies are inferred from the claim text.