发明授权
US5893918A System and method for rotational position sensing miss avoidance in
direct access storage devices
失效
直接存取存储装置中旋转位置检测缺失避免的系统和方法
- 专利标题: System and method for rotational position sensing miss avoidance in direct access storage devices
- 专利标题(中): 直接存取存储装置中旋转位置检测缺失避免的系统和方法
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申请号: US885099申请日: 1992-05-18
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公开(公告)号: US5893918A公开(公告)日: 1999-04-13
- 发明人: Brent Cameron Beardsley , Michael Thomas Benhase , Susan Marie Wethington
- 申请人: Brent Cameron Beardsley , Michael Thomas Benhase , Susan Marie Wethington
- 申请人地址: 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: NY Armonk
- 主分类号: G06F13/10
- IPC分类号: G06F13/10 ; G06F3/06 ; G06F12/08 ; G06F13/14 ; G06F13/00
摘要:
A method for operating a controller for a plurality of direct access storage devices to minimize rotational misses during data transfer operations. Transferred data is staged into a controller cache when a rotational position sensing miss avoidance reconnection is made. Circumstances are detailed for qualifying an operation pending on direct access storage devices for treatment as miss avoidance candidates. Adjustment of controller response depending upon foreknowledge that a channel command word chain includes a write operation is also accomplished utilizing the present method.
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