Data replication among storage systems

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United States of America Patent

PATENT NO 8566284
APP PUB NO 20120311252A1
SERIAL NO

13554163

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Abstract

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A first storage system stores information relating to the updating of data stored in that system as a journal. More specifically, the journal is composed of a copy of data that was used for updating and update information such as a write command used during updating. Furthermore, the second storage system acquires the journal via a communication line between the first storage system and the second storage system. The second storage system holds a duplicate of the data held by the first storage system and updates the data corresponding to the data of the first storage system in the data update order of the first storage system by using the journal.

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Patent Owner(s)

  • HITACHI, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arakawa, Hiroshi Sagamihara, JP 227 4654
Hirakawa, Yusuke Odawara, JP 58 1085
Sato, Takao Odawara, JP 136 1344
Takeda, Takahiko Minamiashigara, JP 23 269

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