发明授权
US08639877B2 Wear leveling of solid state disks distributed in a plurality of redundant array of independent disk ranks
有权
分散在独立磁盘排列的多个冗余阵列中的固态磁盘的磨损均衡
- 专利标题： Wear leveling of solid state disks distributed in a plurality of redundant array of independent disk ranks
- 专利标题（中）： 分散在独立磁盘排列的多个冗余阵列中的固态磁盘的磨损均衡
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申请号： US12495244申请日： 2009-06-30
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公开(公告)号： US08639877B2公开(公告)日： 2014-01-28
- 发明人: Michael Thomas Benhase , Andrew Dale Walls
- 申请人： Michael Thomas Benhase , Andrew Dale Walls
- 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 and Victor LLP
- 代理商 Rabindranath Dutta
- 主分类号： G06F12/00
- IPC分类号： G06F12/00 ; G06F13/00 ; G06F13/28
摘要：
A computational device allocates a plurality of solid state disks to a plurality of redundant array of independent disk (RAID) ranks, wherein a different solid state disk is absent in each RAID rank of the plurality of RAID ranks. The computational device determines at least one selected solid state disk from the plurality of solid state disks, wherein the at least one selected solid state disk is estimated to have undergone a greater amount of wear in comparison to other solid state disks in the plurality of solid state disks. Relatively more data and parity information is written to those RAID ranks in which the at least one selected solid state disk is absent in comparison to those RAID ranks in which the at least one selected solid state disk is present.