Prioritized random access for magnetic recording
View Patent ↗A storage device includes a controller that directs incoming data to a storage location based on a capacity of a region or surface of a magnetic disc. According to one implementation, the storage device controller writes new data to data tracks in a first series of data tracks on the magnetic disc until a capacity condition is satisfied. Once the capacity condition is satisfied, the storage device controller writes new data to a second series of data tracks on the storage medium that are interlaced with data tracks of the first series.
1. A method comprising:
writing data to a first series of data tracks within a region of a storage medium while a post-write scan operation is disabled and until a first capacity condition is satisfied, the data tracks of the first series each separated from one another by at least one interlaced data track; and
once the first capacity condition is satisfied, enabling a post-write scan operation to verify integrity of adjacent track data after a subsequent write operation.
2. The method of claim 1 , wherein the first series of data tracks is a series of alternating data tracks.
3. The method of claim 1 , wherein enabling the post-write scan procedure further comprises:
enabling a data track write counter to increment for a first data track each time data is recorded in a second data track directly adjacent to the first data track.
4. The method of claim 3 , further comprising:
reading data of the first data track when a value of the data track write counter satisfies an increment threshold.
5. The method of claim 3 , further comprising:
if a number of read errors of the first data track data satisfies an error threshold, re-writing the data of the first data track and resetting the data track write counter.
6. The method of claim 1 , wherein the first capacity condition is satisfied when at least half of the data tracks in the region store data.
7. The method of claim 1 , wherein the region is an entire surface of a magnetic media.
8. The method of claim 1 , wherein the region is a radial zone on the magnetic media.
9. Apparatus comprising:
a storage device controller configured to:
write data to a first series of data tracks within a region of a storage medium while a post-write scan operation is disabled and until a first capacity condition is satisfied, the data tracks of the first series each separated from one another by at least one interlaced data track; and
once the first capacity condition is satisfied, enable a post-write scan operation to verify integrity of adjacent track data after a subsequent write operation.
10. The apparatus of claim 9 , wherein the first series of data tracks is a series of alternating data tracks.
11. The apparatus of claim 9 , wherein enabling the post-write scan procedure further comprises:
enabling a data track write counter to increment for a first data track each time data is recorded in a second data track directly adjacent to the first data track.
12. The apparatus of claim 11 , further comprising:
reading data of the first data track when a value of the data track write counter satisfies an increment threshold.
13. The apparatus of claim 9 , further comprising:
if a number of read errors of the first data track data satisfies an error threshold, re-writing the data of the first data track and resetting the data track write counter.
14. The apparatus of claim 9 , wherein the first capacity condition is satisfied when at least half of the data tracks in the region store data.
15. The apparatus of claim 9 , wherein the region is an entire surface of a magnetic media.
16. The apparatus of claim 9 , wherein the region is a radial zone on the magnetic media.
17. One or more tangible computer-readable storage media encoding computer-executable instructions for executing on a computer system a computer process, the computer process comprising:
writing data to a first series of data tracks within a region of a storage medium while a post-write scan operation is disabled and until a first capacity condition is satisfied, the data tracks of the first series each separated from one another by at least one interlaced data track; and
once the first capacity condition is satisfied, enabling a post-write scan operation to verify integrity of adjacent track data after a subsequent write operation.
18. The one or more tangible computer-readable storage media of claim 17 , wherein the first series of data tracks is a series of alternating data tracks.
19. The one or more tangible computer-readable storage media of claim 17 , wherein enabling the post-write scan procedure further comprises:
enabling a data track write counter to increment for a first data track each time data is recorded in a second data track directly adjacent to the first data track.
20. The one or more tangible computer-readable storage media of claim 19 , wherein the computer process further comprises:
reading data of the first data track when a value of the data track write counter satisfies an increment threshold.