发明授权
US09043544B2 Writing of new data of a first block size in a raid array that stores both parity and data in a second block size
有权
在第二个块大小中存储奇偶校验和数据的RAID阵列中写入第一个块大小的新数据
- 专利标题： Writing of new data of a first block size in a raid array that stores both parity and data in a second block size
- 专利标题（中）： 在第二个块大小中存储奇偶校验和数据的RAID阵列中写入第一个块大小的新数据
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申请号： US13460493申请日： 2012-04-30
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公开(公告)号： US09043544B2公开(公告)日： 2015-05-26
- 发明人: Michael T. Benhase , Ian D. Judd , Daniel F. Moertl , Karl A. Nielsen
- 申请人： Michael T. Benhase , Ian D. Judd , Daniel F. Moertl , Karl A. Nielsen
- 申请人地址： US NY Armonk
- 专利权人： INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人： INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址： US NY Armonk
- 代理机构： Konrad Raynes Davda & Victor LLP
- 代理商 Rabindranath Dutta
- 主分类号： G06F12/00
- IPC分类号： G06F12/00 ; G06F3/06 ; G06F11/20 ; G11B20/12 ; G06F11/10
摘要：
A Redundant Array of Independent Disks (RAID) controller receives new data that is to be written, wherein the new data is indicated in blocks of a first block size. The RAID controller reads old data, and old parity that corresponds to the old data, stored in blocks of a second block size that is larger in size than the first block size. The RAID controller computes new parity based on the new data, the old data, and the old parity. The RAID controller writes the new data and the new parity aligned to the blocks of the second block size, wherein portions of the old data that are not overwritten by the RAID controller are also written to the blocks of the second block size.
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