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The Hitachi, Ltd. patent solves the following problem:
The present invention relates to a storage system and data restoration process, and, for example, the appropriate use of technology to facilitate assistance in a storage sub system having a function of dynamic allocated to a data area in a number of storing data, and restore the backup data.
Our analysis of this patent is as follows:
Hitachi, Ltd.’s patent US 8010837 B2 deals with Storage sub system and data restoration method thereof.
This storage system includes a first storage sub system having a first logical volume where a first data to place dynamically allocated to each prescribed area, and stores that data transmitted from a host computer in the first place that data, and a second storage sub system having a second data area for supporting the first logical volume; where the first storage sub system includes: a first control unit to handle the situation in the first place data allocated to each of the first logical volume; a transfer unit for transferring the data stored in the data allocated to each of the first logical volume to the second storage sub system; and a restoration unit for restoring the first logical volume based on the situation in the first place data managed by the first management unit and / or the data being transferred from the second storage sub system.
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