发明公开
EP0584804A2 Redundant array of disks with improved storage and recovery speed
失效
Redundante Speicherplattenmatrix mit verbesserter Schreib- und Lesegeschwindigkeit。
- 专利标题： Redundant array of disks with improved storage and recovery speed
- 专利标题（中）： Redundante Speicherplattenmatrix mit verbesserter Schreib- und Lesegeschwindigkeit。
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申请号： EP93113563.6申请日： 1993-08-25
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公开(公告)号： EP0584804A2公开(公告)日： 1994-03-02
- 发明人: Matsumoto, Toshio, c/o Mitsubishi Denki K.K. , Baba, Hiroshi, c/o Mitsubishi Denki K.K. , Itoh, Kazuhiko, c/o Mitsubishi Denki K.K. , Ogura, Shiro, c/o Mitsubishi Denki K.K.
- 申请人： MITSUBISHI DENKI KABUSHIKI KAISHA
- 申请人地址： 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo 100 JP
- 专利权人： MITSUBISHI DENKI KABUSHIKI KAISHA
- 当前专利权人： MITSUBISHI DENKI KABUSHIKI KAISHA
- 当前专利权人地址： 2-3, Marunouchi 2-chome Chiyoda-ku Tokyo 100 JP
- 代理机构： Pfenning, Meinig & Partner
- 优先权： JP226976/92 19920826
- 主分类号： G11B20/12
- IPC分类号： G11B20/12 ; G11B20/18 ; G06F3/06
摘要：
In a redundant array of disks, the disks are divided into areas of different sizes, so that small amounts of data can be stored in an area of an appropriate size on a single disk, instead of being spread over multiple disks. A usage status table indicates which areas are in use. Check information is generated and stored only for areas indicated to be in use. When new check information is generated, it is therefore possible to omit the reading of unnecessary old data and old check information. When a disk fails and is replaced with a standby disk, only the data in areas indicated to be in use are reconstructed. Check information can be stored on a solid-state disk.
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