Recent vibration issues in computer hard disk drives
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For the past 20 years, the disk drive industry has continued to increase the track density (measured by tracks per inch, TPI) and the rotational speed (measured by revolutions per minute, RPM) in order to increase storage capacity and to reduce data access time. For high-TPI, high-RPM drives, disk and spindle vibration becomes a critical issue and a major concern. If the vibration exceeds an allowable limit called the track misregistration budget, read/write errors may occur. For drives with
Acknowledgements
This work is supported by National Science Foundation through grant CMS-9634557 and the author's industrial sponsors.
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