发明授权
US08141095B2 Recording medium storing data allocation control program, data allocation control device, data allocation control method, and multi-node storage-system
有权
存储数据分配控制程序，数据分配控制装置，数据分配控制方法，多节点存储系统的记录媒体
- 专利标题： Recording medium storing data allocation control program, data allocation control device, data allocation control method, and multi-node storage-system
- 专利标题（中）： 存储数据分配控制程序，数据分配控制装置，数据分配控制方法，多节点存储系统的记录媒体
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申请号： US12343486申请日： 2008-12-24
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公开(公告)号： US08141095B2公开(公告)日： 2012-03-20
- 发明人: Tatsuo Kumano , Yasuo Noguchi , Kazutaka Ogihara , Masahisa Tamura , Yoshihiro Tsuchiya , Tetsutaro Maruyama , Takashi Watanabe , Riichiro Take , Kazuichi Oe , Minoru Kamosida , Shigeyuki Miyamoto
- 申请人： Tatsuo Kumano , Yasuo Noguchi , Kazutaka Ogihara , Masahisa Tamura , Yoshihiro Tsuchiya , Tetsutaro Maruyama , Takashi Watanabe , Riichiro Take , Kazuichi Oe , Minoru Kamosida , Shigeyuki Miyamoto
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Fujitsu Patent Center
- 优先权： JP2007-333969 20071226
- 主分类号： G06F9/46
- IPC分类号： G06F9/46
摘要：
A data allocation control program manages data allocation when data is distributively stored in a plurality of disk nodes that are shifted to a power saving mode unless access is performed for a certain time. The program produces a plurality of allocation pattern candidates each indicating the disk nodes in which the respective data are to be stored. The program calculates a no-access period expectation that represents an expected value of occurrence of a no-access period during which access is not performed to some of the disk nodes. The program selects as an allocation pattern for data reallocation, one of the plurality of produced allocation pattern candidates with the largest calculated no-access period expectation. The program instructs the disk nodes to reallocate the respective data in accordance with the selected allocation pattern.
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