Disk drive using non-volatile cache when garbage collecting log structured writes
US9563397B1 · kind B1 · utility
11Cited by
16References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 5, 2010 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | Jul 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7205
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks, each track comprising a plurality of data sectors. A circular buffer is defined comprising a plurality of the tracks. During a garbage collection operation, write data is read from previously written valid data sectors corresponding to a tail of the circular buffer and stored in a non-volatile cache. During a flush operation, the write data is flushed from the non-volatile cache to the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.