Angular position tracking of data accesses to mitigate risk of data loss

摘要

Systems, apparatuses, and methods use angular position tracking in mitigating data loss risks stemming from adjacent track interference (ATI), wide area track erasure (WATER), and/or other issues. A storage device includes a rotational magnetic storage medium divided into a group of tracks and a controller communicably coupled to the rotational magnetic storage medium. The controller is configured to: determine, based on an angular position of a write operation within a group of tracks, whether the angular position of the write operation overlaps a previously written area in the group of tracks; in the event the angular position of the write operation overlaps the previously written area in the group of tracks, increment a counter; and in the event the counter exceeds a counter threshold, perform a data loss risk mitigation procedure.

主权项

1. A storage device, comprising:
a rotational magnetic storage medium divided into groups of tracks; and a controller, communicably coupled to the rotational magnetic storage medium, the controller being configured to:
determine, based on an angular position of a write operation within a group of tracks, whether the angular position of the write operation overlaps a previously written area in the group of tracks;in the event the angular position of the write operation overlaps the previously written area in the group of tracks, increment a counter; andin the event the counter exceeds a counter threshold, perform a data loss risk mitigation procedure.