Sector-based write operation

• US 9,129,627 B1
• Filed: 05/15/2014
• Issued: 09/08/2015
• Est. Priority Date: 05/15/2014
• Status: Active Grant

• Current Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Original Assignee: Seagate Technology LLC (Seagate Technology Holdings Plc)
• Inventors: Liu, Xiong, Xie, Wen Xiang, Thein, Than Zaw
• Primary Examiner(s): Agustin, Peter Vincent
• Application Number:
  US14/278,886
• Time in Patent Office: 481 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G11B 5/09 Digital recording
• CPC Class Codes: G11B 5/5526 Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof G11B5/556 takes precedence

Abstract

A method or system comprises determining a target sector of a write operation in response to a request for the write operation to a band in a storage device, determining a plurality of down-track data sectors in the band, and performing a band rewrite operation on the target data sector and the down-track data sectors.

Claims

1. A method comprising:

determining a target sector of a write operation in response to a request for the write operation to a band in a shingled media storage device;

determining a plurality down-track data sectors in the band; and

performing a band rewrite operation on the target data sector and the down-track data sectors.

2. The method of claim 1, wherein determining a plurality down-track data sectors in the band comprises determining a plurality of down-track data sectors as the data sectors affected by a write operation on the target data sector.

3. The method of claim 1, further comprising:

determining a second target sector of the write operation;

determining a second plurality down-track data sectors in the band; and

performing a band rewrite operation on the second target data sector and the second down-track data sectors.

4. The method of claim 3, further comprising:

determining a third target sector of the write operation;

determining a third plurality down-track data sectors in the band; and

performing a band rewrite operation on the third target data sector and the third down-track data sectors.

5. The method of claim 1, wherein performing a band rewrite comprises performing a full band rewrite.

6. The method of claim 1, wherein performing a band rewrite comprises performing a partial band rewrite.

7. The method of claim 1, the band comprising at least 10 tracks.

8. The method of claim 7, the band comprising 100 tracks.

9. A method comprising:

determining a target sector having initial data and a plurality of down-track data sectors corresponding to the target sector, wherein the target sector and the plurality of down-track sectors are shingled in the down-track direction; and

rewriting the target sector with modified data and rewriting the plurality of down-track data sectors without rewriting additional sectors not down-track of the target sector.

10. A storage device comprising:

a storage media configured to store data using shingled media recording (SMR);

a processor configured to determine a target sector in a band of a write operation and to identify down-track sectors of the target sector in the band; and

a transducer configured to read and write data to the target sector and to the down-track sectors in the band.

11. The storage device of claim 10, wherein the storage media is configured to store data on a plurality of bands, each band comprising a plurality of tracks.

12. The storage device of claim 10, wherein the processor is further configured to determine a second target sector of the write operation and to identify second down-track sectors of the second target sector.

13. The storage device of claim 10, wherein the storage media is a magnetic disc.

14. The storage device of claim 10, the band comprising at least 10 tracks.

15. The storage device of claim 14, the band comprising 100 tracks.