Variable written track widths for attribute-based storage
AssigneeSeagate Technology LLC
InventorsKaizhong Gao, Wenzhong Zhu, Tim Rausch, Edward Gage
Life of this patent
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Abstract
A storage device controller is configured to select one of multiple written track widths for a storage location based on a write attribute of data to be recorded at the storage location. According to one implementation, the storage device controller is further configured to select a power level for a heat-assisted magnetic recording (HAMR) device based on the write attribute.
Claims14
One or more computer-readable storage media of a tangible article of manufacture encoding computer-executable instructions for executing on a computer system a computer process, the computer process comprising:
- selecting one of multiple written track widths within a data band for a storage location based on a data type of data to be recorded at the storage location;
- selecting a wider written track width for the storage location responsive to a determination that the data type is cache data than a written track width selected responsive to a determination that the data type is non-cache data;
- and
- selecting a power level for operating a heat-assisted magnetic recording (HAMR) head to write the data based on the data type.
One or more computer-readable storage media of a tangible article of manufacture encoding computer-executable instructions for executing on a computer system a computer process, the computer process comprising:
- selecting a power level for operating a heat-assisted magnetic recording (HAMR) head to record data on a storage medium based on an attribute of the data;
- and
- writing the data to the storage medium while operating the HAMR head exclusively at the selected power level,
- wherein the data is written to top data tracks included in an interlaced magnetic recording scheme responsive to a determination that at least one of a write frequency and write recency is higher than a predefined threshold;
- and
- wherein the data is written to bottom data tracks included in the interlaced recording scheme responsive to a determination that at least one of write frequency and write recency is lower than a predefined threshold.
An apparatus comprising:
- a storage device controller configured to:
- select a power level for operating a heat-assisted magnetic recording (HAMR) head to write incoming data to a selected data track based whether the incoming data is cache data or non-cache data;
- and
- write cache data to a first radial zone of a storage medium at a first written track width and non-cache data to a second radial zone of the storage medium at one or more written track widths different from the first written track width.
One or more computer-readable storage media of a tangible article of manufacture encoding computer-executable instructions for executing on a computer system a computer process, the computer process comprising:
- selecting a written track width of multiple written track widths for a storage location based on a current available storage capacity on a storage medium;
- and
- writing data to a low density data track included between high-density data bands responsive to a determination that the data is system data.
Dependencies are inferred from the claim text.