Limit disc nodes by band usage

摘要

The present disclosure generally relates to shingled recording systems, such as shingled magnetic recording (SMR). In some embodiments, systems having a data storage device containing a write cache and shingled bands may store new data from a host in the write cache before writing it to shingled track main storage. The system may determine when to throttle completion of commands based on a number of unique bands associated with data stored in the write cache.

主权项

1. An apparatus comprising:
a data storage medium including multiple bands of tracks, each band including data tracks arranged in a shingled manner where at least one track partially overlaps an adjacent track; a controller configured to:
prevent execution of write requests for writes to the data storage medium when a number of bands having data in a cache exceeds a threshold.