发明名称 |
System and method for correcting for head tilt in HDD |
摘要 |
Tilt between a head stack and its associated disk stack in a hard disk drive (HDD) is measured by determining the deviation of a target head from its expected position (based on the position of the current head) each time electrical contact is switched from the current head to a target head. A running average tilt value is stored and used to modify the logical seek distance used in a Rotational Position Optimization (RPO) algorithm to better order I/O requests in a queue. Also, the running average tilt value can be used by the servo to pre-position the target head before electrical contact is made with the target head, to improve speed of operation.
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申请公布号 |
US7133235(B2) |
申请公布日期 |
2006.11.07 |
申请号 |
US20040786692 |
申请日期 |
2004.02.25 |
申请人 |
HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS, B.V. |
发明人 |
AUERBACH DANIEL JONATHAN;DOBBEK JEFFREY JOESPH;FREES GREGORY MICHAEL;HALL DAVID ROBISON |
分类号 |
G11B15/18;G11B21/08;G11B5/55;G11B5/56;G11B20/20;G11B21/02;G11B21/20 |
主分类号 |
G11B15/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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