Sieved caching for increasing data rate capacity of a heterogeneous striping group
US6742019B1 · kind B1 · utility
7Cited by
30References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1999 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | Jul 23, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1008
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Under the present invention, a small cache is used for the selective buffering of devices of a heterogeneous striping group (i.e., striping group made of devices with unequal capacities) to match the load on each device to its capacity. The inventive caching algorithm utilizes a device map, or disk map, and applies a cache distribution factor for each device of a group to determined how to selectively buffer blocks read from different devices of a striping group; thereby placing different loads on the different devices of a striping group in accordance with their capacities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.