Hard disk drive infant mortality test
US6408406B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 1999 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Aug 31, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/182
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A functional test for determining whether a hard disk drive has experienced an early-life failure. The test retrieves values of a selected set of stored historical performance parameters of the hard disk drive, then compares the retrieved values against a set of associated performance thresholds. If any of the selected set of stored historical performance parameters exceeds the associated performance threshold, the hard disk drive is marked as defective. The test also performs a set of non-destructive read/write tests to selected regions of the hard disk drive, generating a set of results. The non-destructive read/write test results are then compared against an associated performance threshold. If the results of the non-destructive read/write tests exceed the associated performance threshold, the hard disk drive is marked as defective. If neither the hard disk drive's historical performance parameters nor the results from the read/write tests exceed the associated performance thresholds, the hard disk drive is marked as functional.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.