Raid-5 parity generation and data reconstruction
US5805788A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 20, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | May 20, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2211/1059
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for implementing RAID-5 parity generation and reconstruction. Data for an array of disk drives is placed in an I/O buffer. The RAID-5 parity engine creates parity data and stores the resulting parity data in the I/O buffer as well. The I/O buffer (both the data and the parity) is then sector-striped across a network of disk drives, such as a Fibre Channel network. The RAID-5 parity engine creates parity on multiple stripes of data upon a single activation of the engine. The RAID-5 parity engine can reconstruct a sector of data using the parity information. The RAID-5 parity engine can also check the data against its expected parity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.