Algorithm for maintaining maximum streaming performance of mirrored disks
US6721845B1 · kind B1 · utility
9Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Dec 23, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0689
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A reading algorithm for a set of mirrored disks sends groups of reads to one disk, then sends the next group to the other disk. This provides a more optimal use of disks for sequential reads than previous algorithms. An enhanced version uses snooping of the read requests and switches disks immediately for the read if the requests are not sequential, or within a given number of records of sequential. Additionally, the size of the requests can change the number of requests grouped together in the enhanced version.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.