Invention Grant
US08014093B2 Hard disk sector/track remapping for transparent wear leveling 有权
硬盘扇区/轨道重映射用于透明磨损均衡

  • Patent Title: Hard disk sector/track remapping for transparent wear leveling
  • Patent Title (中): 硬盘扇区/轨道重映射用于透明磨损均衡
  • Application No.: US12452958
    Application Date: 2008-07-28
  • Publication No.: US08014093B2
    Publication Date: 2011-09-06
  • Inventor: William Charles Koester
  • Applicant: William Charles Koester
  • Applicant Address: FR Boulogne-Billacourt
  • Assignee: Thomson Licensing
  • Current Assignee: Thomson Licensing
  • Current Assignee Address: FR Boulogne-Billacourt
  • Agent Robert D. Shedd; Patricia A. Verlangieri
  • International Application: PCT/US2008/009116 WO 20080728
  • International Announcement: WO2009/025715 WO 20090226
  • Main IPC: G11B27/36
  • IPC: G11B27/36
Hard disk sector/track remapping for transparent wear leveling
Abstract:
The present principles provide methods for storing the write counts for each track on the track or alternatively in NVRAM in the hard disk. Most hard disks already have a mechanism to remap a sector that becomes un-writable. This mechanism is used to remap entire tracks when a track write count becomes too high. A track with an excessively high write count can be mapped by the hard disk firmware to a track with a very low write count. By automatically remapping these tracks based on the number of write the wear can be more evenly distributed across the platter thus increasing the service life of the hard disk without modification to the application software.
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