Addressing variations in bit error rates amongst data storage segments

摘要

The disclosure is related to an apparatus and methods for addressing variations in bit error rates amongst data storage segments. In a particular embodiment, an apparatus includes a controller that detects variations in bit error rates amongst different segments of a plurality of segments in a storage medium. The controller also adjusts a read/write operation parameter according to the detected variations amongst the bit error rates in the plurality of segments.

主权项

1. An apparatus comprising:
a controller device configured to:
determine a topographical profile of a storage medium and a bit error rate profile of the storage medium;utilize a correlation function to determine whether the topographical profile and the bit error rate profile correspond prior to adjusting a read/write operation parameter to substantially avoid potential improper read/write operation parameter adjustments when bit error rate variations occur without corresponding topographical variations;detect at least one of the topographical variations or the bit error rate variations amongst different segments of a plurality of segments in the storage medium when the topographical profile and the bit error rate profile correspond; andadjust the read/write operation parameter according to the detected topographical variations or bit error rate variations to control bit error rates of the plurality of segments.