发明授权
US09086812B2 Storage device, control method for same and system management program
有权
存储设备,相同的控制方法和系统管理程序
- 专利标题: Storage device, control method for same and system management program
- 专利标题(中): 存储设备,相同的控制方法和系统管理程序
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申请号: US13579974申请日: 2011-02-17
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公开(公告)号: US09086812B2公开(公告)日: 2015-07-21
- 发明人: Haruo Yokota , Satoshi Hikida
- 申请人: Haruo Yokota , Satoshi Hikida
- 申请人地址: JP Tokyo
- 专利权人: TOKYO INSTITUTE OF TECHNOLOGY
- 当前专利权人: TOKYO INSTITUTE OF TECHNOLOGY
- 当前专利权人地址: JP Tokyo
- 代理机构: Squire Patton Boggs (US) LLP
- 优先权: JP2010-034323 20100219
- 国际申请: PCT/JP2011/053413 WO 20110217
- 国际公布: WO2011/102429 WO 20110825
- 主分类号: G06F12/08
- IPC分类号: G06F12/08 ; G06F3/06 ; G06F11/20
摘要:
A storage device has plural data disks including a primary data area and a backup data area. Performance and reliability are secured while conserving power. A system management means includes a disk rotational state detection means, a disk rotational state control means for rotating or stopping a data disk, and a data placement control means for accessing the data disk to move the data. The data placement control means, if the data disk of the primary or backup side has been stopped at writing time, spins up and accesses thereof, and if the data disk of the primary or backup side has been stopped at reading time, prioritizes the side that is being rotated and accesses thereto, and if the data disk of the primary and backup side have both been stopped at reading time, spins up and accesses the side that has been stopped for the longer time.
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