Analyzing drive errors in data storage systems
US8566637B1 · kind B1 · utility
10Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 2010 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Feb 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/0793
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method is used in analyzing drive errors in data storage systems. An error tag and total good I/O count are maintained for a drive. For each failed I/O, the following is performed. An error weight per error is retrieved. A new error tag is calculated from the error weight, a previous error tag, and the total good I/O count. An error ratio is calculated from the new error tag and a total I/O count. The error ratio is compared with thresholds. If one or more of the thresholds has been crossed, action is taken on the drive. The error tag is reduced as good I/O is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.