Disk drive controller accepting first commands for accessing composite drives and second commands for individual diagnostic drive control wherein commands are transparent to each other
US5530960A · kind A · utility
89Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 1994 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Apr 6, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A disk drive array with a controller which provides: dynamic remapping for grown defects in the disk drives, multi-thread request processing with a variable number of forkings, defect tracking with both logical and physical lists, guarded writes of less than a full stripe optimized by selectably using the redundancy to limit the number of sectors involved, association of multiple operations with a single disk request in order to facilitate error handling, use of an access hiatus as indication of further opportunity to rebuild data in background, and scatter/scatter (bidirectional scatter/gather) operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.