Invention Grant
- Patent Title: Remote copy system maintaining consistency
- Patent Title (中): 远程复制系统保持一致性
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Application No.: US11656482Application Date: 2007-01-23
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Publication No.: US07865678B2Publication Date: 2011-01-04
- Inventor: Hiroshi Arakawa , Takashige Iwamura , Yusuke Hirakawa
- Applicant: Hiroshi Arakawa , Takashige Iwamura , Yusuke Hirakawa
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2004-200226 20040707
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F13/00 ; G06F13/28 ; G06F7/00 ; G06F17/00
Abstract:
A remote copy system for copying data between a plurality of storage systems, including: a plurality of first storage systems to and from which data is inputted and outputted, and a plurality of second storage systems that are connected to each of the first storage systems; each of the first storage systems including a first logical volume that stores the data that is inputted and outputted; each of the second storage systems including a second logical volume that stores a copy of the data stored in the first logical volume; the remote copy system comprising a pre-update data storage unit that stores pre-update data that is stored before data to be stored in the second logical volume is updated and time stamps of the data to be stored in the second logical volume.
Public/Granted literature
- US20070118705A1 Remote copy system maintaining consistency Public/Granted day:2007-05-24
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