RAID-5 disk having cache memory implemented using non-volatile RAM
US7035974B2 · kind B2 · utility
54Cited by
6References
7Claims
0Family size
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Key dates
| Filing date | Oct 17, 2003 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | Aug 19, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/312
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A computer implemented cache memory for a RAID-5 configured disk storage system to achieve a significant enhancement of the data access and write speed of the raid disk. A memory cache is provided between the RAID-5 controller and the RAID-5 disks to speed up RAID-5 system volume accesses. It utilizes the time and spatial locality property of parity blocks. The memory cache is central in its physical architecture for easy management, better utilization, and easy application to a generalized computer system. The cache blocks are indexed by their physical disk identifier to improve the cache hit ratio and cache utilization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.