Redundant array of disks with improved storage and recovery speed
US5517632A · kind A · utility
67Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1993 |
| Grant date | May 14, 1996 |
| Priority date | — |
| Expiry date | Aug 23, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/65
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a redundant array of disks, the disks are divided into areas of different sizes, so that small amounts of data can be stored in an area of an appropriate size on a single disk, instead of being spread over multiple disks. A usage status table indicates which areas are in use. Check information is generated and stored only for areas indicated to be in use. When new check information is generated, it is therefore possible to omit the reading of unnecessary old data and old check information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.