Adaptive guard band for improved data storage capacity

摘要

An adaptive guard band for a ramp load/unload device is disclosed to provide extended data storage. In illustrated embodiments, an adaptive guard band algorithm is configured to format one or more discs or media having a lower capacity device with the adaptive guard band and extended data zone utilizing capacity measurements. The algorithm formats the media to provide a track zero at a first cylinder if the capacity is at or above the threshold capacity and a second cylinder if the capacity is below the threshold capacity to provide the extended data storage zone. A size or width of the extended data zone is variable to provide additional capacity to meet the threshold capacity.

主权项

1. A method comprising:
formatting a track zero at a first cylinder of one or more media of a data storage device if a data storage capacity of the data storage device is at or above a threshold capacity; formatting the track zero at a second cylinder spaced from the first cylinder if the data storage capacity is below the threshold capacity to form an extended data zone; assigning LBA addresses to physical blocks beginning at the first cylinder; remapping LBA addresses from an inner data zone to the extended data zone, wherein the inner data zone is formed between the first cylinder and an inside diameter; and inserting a pad or delay into a data sequence for the remapped LBA addresses to compensate for differences in recording frequencies between the inner data zone and the extended data zone, thereby substantially matching a recording frequency of the extended data zone to a recording frequency of the inner data zone.