Distributed field self-test for shingled magnetic recording drives
US8599507B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2011 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | May 31, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method is described for allowing disk drives, such as shingle-written magnetic recording (SMR) drives, to be shipped for customer use with portions of the magnetic media being left untested. The testing is then completed by the drive self-testing in the field. The drive is made functional at the factory by fully testing at least one operational set of regions including an I-region, an E-region and a write cache region. The operational set of regions works as a separate self-contained virtual disk drive and can be used immediately. The remaining untested areas on the media can be tested in the field by a background task and/or when the first write command is received that requires a new track or operational set of regions (on-the fly testing).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.