Data recovery scan based on head performance
US8023215B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2010 |
| Grant date | Sep 20, 2011 |
| Priority date | — |
| Expiry date | May 25, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is provided that decides whether a region of data storage units in a data storage system should be scanned for defective data. A current region of data storage units affected by a write operation is determined and which select transducing head of the data storage system that corresponds with the current region is also determined. A scalar value that corresponds with the select transducing head is retrieved. The scalar value related to a condition of the select transducing head based on previously conducted performance tests. An incremented write count of the affected region is scaled by the scalar value to obtain a new increment write count. A defective data scan is performed on the affected region if the new increment write count exceeds a default write count threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.