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Systems and methods for fast measurement of channel performance metrics such as error margin and off-track recording capability in shingled magnetic recording
Systems and methods for fast measurement of channel performance metrics such as error margin and off-track recording capability in shingled magnetic recording
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机译:用于快速测量通道性能指标的系统和方法,例如,带状磁记录中的误差容限和离轨记录能力
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摘要
Systems and methods for making fast measurements of channel performance metrics such as error margin and off-track recording capability in shingled magnetic recording are provided. One such method involves writing a plurality of shingled tracks on the disk, measuring an off track read capability (OTRC) of each of the plurality of shingled tracks, determining radial endpoints of the measured OTRC for each of the plurality of shingled tracks, determining an approximate radial center for each of the plurality of shingled tracks based on the respective OTRC radial endpoints, and measuring a channel performance metric at a range centered around the approximate radial center for each of the plurality of shingled tracks. In one such case, the channel performance metric involves error margin. One such system includes a processor coupled to a memory, a magnetic transducer, and a test platform, where the processor is configured to perform the method.
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