Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2008-11-12
2010-12-14
Thai, Tuan V (Department: 2185)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S114000, C711S162000, C714S005110, C714S006130
Reexamination Certificate
active
07853765
ABSTRACT:
Provided are a storage system and data management method capable of improving the usage efficiency of a storage extent. With this storage system, a first storage apparatus dynamically allocates a storage extent to the first volume and sends data written by the host system in the first volume to the second storage apparatus; a second storage apparatus writes the data sent from the first storage apparatus in a corresponding position in the second volume pair-configured with the first volume and stores as management information the position to which the data from the first storage apparatus in the second volume was written; and the second storage apparatus, during the restoration processing of the first volume, refers to the management information and sends to the first storage apparatus the data in a position to which the data from the first storage apparatus in the second volume was written.
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Horiuchi Takeshi
Ito Ryusuke
Foley & Lardner LLP
Hitachi , Ltd.
Li Zhuo H
Thai Tuan V
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