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Power management for data storage device

  • US 8,917,471 B1
  • Filed: 12/13/2013
  • Issued: 12/23/2014
  • Est. Priority Date: 10/29/2013
  • Status: Active Grant
First Claim
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1. A data storage device (DSD), comprising:

  • a disk for storing data;

    a spindle motor for rotating the disk;

    a solid state memory for storing data; and

    a controller configured to;

    enter a high spindle suppression (HSS) mode to reduce instances of rotation of the spindle motor during the HSS mode;

    receive a read command from a host to read requested data from the DSD while the DSD is in the HSS mode;

    determine whether the requested data is not stored in the solid state memory; and

    when it is determined that the requested data is not stored in the solid state memory;

    control the spindle motor to rotate the disk;

    read the requested data from the disk; and

    store the requested data in the solid state memory before completing transfer of the requested data to the host.

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