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US 2004/0024975 A1Published application
Storage system for multi-site remote copy
AssigneeHitachi, Ltd.
InventorsNoboru Morishita, Toshio Nakano, Seiichi Higaki
Life of this patent
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Abstract
Information about remote copy target volumes of other storage systems 2 each having one and the same original volume V1 is registered for each remote copy target volume in advance. When there occurs a failure in a copy source storage system 2, a copy source volume for remote copy target volumes using the storage system 2 having a failure as their copy source is selected newly from the registered copy source volumes, and remote copy is resumed.
Claims8
A storage system connected between a first storage system and a second storage system, comprising:
- a storage control unit;
- and
- a storage unit;
- wherein said storage control unit includes a management information memory for storing information for managing data;
- wherein said management information memory has information about said second storage system;
- and
- wherein said storage control unit receives data from said first storage system, and performs processing for receiving data from said second storage system by use of said information about said second storage system when data cannot be received from said first storage system.
4 more elements
Dependencies are inferred from the claim text.