Invention Grant
- Patent Title: Data duplication control method
- Patent Title (中): 数据复制控制方法
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Application No.: US11819533Application Date: 2007-06-28
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Publication No.: US07937546B2Publication Date: 2011-05-03
- Inventor: Yuri Hiraiwa , Taro Inoue , Sumio Goto
- Applicant: Yuri Hiraiwa , Taro Inoue , Sumio Goto
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Brundidge & Stanger, P.C.
- Priority: JP2003-423464 20031219
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F13/28 ; G06F7/00 ; G06F17/00
Abstract:
When there is a change in a group of volumes managed by a host computer, data duplication processing is immediately carried out against the changed volume. The host computer includes a volume-managing portion, a data duplication-controlling portion which executes the data duplication of data stored in a volume in a main data center, and a data duplication storing portion which stores data necessary for the data duplication. The data duplication-controlling portion compares data held by the volume-managing portion with the data in the data duplication storing portion, and updates the data in the data duplication storing portion based on the data held by the volume-managing portion.
Public/Granted literature
- US20070255916A1 Data duplication control method Public/Granted day:2007-11-01
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