Data storage device with flexible logical tracks and radius-independent data rate

A data storage device, comprising:

• one or more disks;
• at least one actuator mechanism configured to position at least a first head proximate to a first disk surface among the one or more disks and a second head proximate to a second disk surface among the one or more disks;
• and
• one or more processing devices configured, individually or in combination, to:
• assign one or more logical tracks to physical tracks of two or more of the disk surfaces such that a respective logical track of the logical tracks comprises:
• at least a portion of sectors of a primary physical track of the physical tracks, the primary physical track being on the first disk surface;
• and
• at least a portion of sectors of a donor physical track of the physical tracks, the donor physical track being on the second disk surface;
• and
• perform, using the first head proximate to the first disk surface and the second head proximate to the second disk surface, a data access operation with at least one of the logical tracks,
• wherein at least a portion of the logical tracks is assigned with numbers of sectors per logical track equal to:
• a number of sectors of a highest radius physical track at an outer diameter of the disks, or
• a fractional multiple of a number of sectors of a highest radius physical track at an outer diameter of the disks.

A data storage device, comprising:

• one or more disks;
• at least one actuator mechanism configured to position at least a first head proximate to a first disk surface among the one or more disks and a second head proximate to a second disk surface among the one or more disks;
• and
• one or more processing devices configured, individually or in combination to:
• assign one or more logical tracks to physical tracks of two or more of the disk surfaces such that a respective logical track of the logical tracks comprises:
• at least a portion of sectors of a primary physical track of the physical tracks, the primary physical track being on the first disk surface;
• and
• at least a portion of sectors of a donor physical track of the physical tracks, the donor physical track being on the second disk surface;
• and
• perform, using the first head proximate to the first disk surface and the second head proximate to the second disk surface, a data access operation with at least one of the logical tracks,
• wherein assigning the respective logical track to at least the respective primary physical track and at least the portion of sectors of the respective donor physical track comprises interleaving:
• a single sector from the donor track at a time between a plurality of consecutive sectors of the primary physical track in the respective logical track, or
• a consecutive plurality of sectors from the donor track at a time between a plurality of consecutive sectors of the primary physical track in the logical track.

A data storage device, comprising:

• one or more disks;
• at least one actuator mechanism configured to position at least a first head proximate to a first disk surface among the one or more disks and a second head proximate to a second disk surface among the one or more disks;
• and
• one or more processing devices configured, individually or in combination, to:
• assign one or more logical tracks to physical tracks of two or more of the disk surfaces such that a respective logical track of the logical tracks comprises:
• at least a portion of sectors of a primary physical track of the physical tracks, the primary physical track being on the first disk surface;
• and
• at least a portion of sectors of a donor physical track of the physical tracks, the donor physical track being on the second disk surface;
• and
• perform, using the first head proximate to the first disk surface and the second head proximate to the second disk surface, a data access operation with at least one of the logical tracks,
• wherein the primary physical track is a first primary physical track, and
• wherein the respective logical track is further assigned such that the respective logical track further comprises sectors from at least:
• a second primary physical track or
• a second donor physical track.

One or more processing devices comprising, individually or in combination:

• means for assigning one or more logical tracks to physical tracks of one or more disk surfaces such that a respective logical track of the logical tracks is assigned to comprise:
• at least a portion of sectors of at least a primary physical track;
• and
• at least a portion of sectors of at least a donor physical track of the physical tracks or sectors of a non-volatile memory storage;
• and
• means for performing a data access operation with at least one of the logical tracks,
• wherein the respective logical track is assigned to comprise both the portion of sectors of the donor physical track and the sectors of the non-volatile memory storage, and
• wherein the assigning comprises assigning with constant numbers of sectors per logical track, across the first disk surface and the second disk surface.

One or more processing devices comprising, individually or in combination:

• means for assigning one or more logical tracks to physical tracks of one or more disk surfaces such that a respective logical track of the logical tracks is assigned to comprise:
• at least a portion of sectors of at least a primary physical track;
• and
• at least a portion of sectors of at least a donor physical track of the physical tracks or sectors of a non-volatile memory storage;
• and
• means for performing a data access operation with at least one of the logical tracks, wherein:
• the means for assigning the logical tracks comprises means for assigning sectors of the donor physical track to the logical track;
• and
• the means for assigning the logical tracks to the physical tracks is such that, for the respective logical track, the primary physical track and the donor physical track are in vertical alignment on opposing disk surfaces of one of the disks.