Background read scanning with defect reallocation
US6412089B1 · kind B1 · utility
24Cited by
22References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1999 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Feb 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method, apparatus and computer system for correcting errors and defects in a storage device. The storage device includes media for storing data. A periodic read scan is performed to test the data. If a repeatable error is found, the data is moved to a new sector from a pool of available sectors. Defects are counted and identified in a defect list for reporting to the host. The storage device is scannable is small segments to minimize impact on performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.