Method and system for detection and reconstruction of corrupted data in a data storage subsystem
US5951691A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1997 |
| Grant date | Sep 14, 1999 |
| Priority date | — |
| Expiry date | May 16, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/1064
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a method and system for detecting corrupted data of a plurality of hard disk drives (HDDs) in a data storage subsystem. In this system a predetermined number of fixed blocks within each of the HDDs emulate a track of a first track format. The predetermined number of fixed blocks provide a logical track. The logical track of one of the plurality of HDDs is generated by the others of the plurality of HDDs. The plurality of logical tracks forming a plurality of track groups. In a first aspect the method and system comprises assigning each of the plurality of logical tracks an address translation (ADT) number, comparing each of the ADT numbers of the plurality of logical tracks to an expected value until a mismatch occurs in a logical track, and determining if other logical tracks in a same track group have accurate ADT numbers. The first aspect further includes reconstructing the logical track if the other tracks within the same track group have accurate ADT numbers. In a second aspect the method and system comprises determining each of the plurality of logical tracks is formatted in accordance with first track format, comparing each of the formats of th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.