Redundant recording disk device and data processing method using plural logical disks with mirrored data stored with a predetermined phase-offset
US6457096B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1999 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Oct 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2069
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A redundant recording disk device includes a first logical sub-disk and a second logical sub-disk. Mirrored redundant data are recorded such that a recording position on the first logical sub-disk and a recording position on the second logical sub-disk are positions on a corresponding radius and have a phase difference of 180 degrees around respective rotation axes of the disks with respect to one data. Therefore, the practical use of the disk device can be continued even when one recording surface is not usable because of a fault, and the access speed of the disk can be increased when there is no fault since the mirrored data which have been written with a predetermined phase-offset into the different recording surfaces may be read out in a parallel manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.