Range-based cache control system and method
US6880043B1 · kind B1 · utility
135Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 2003 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Jul 25, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/313
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to disk drive having a cache control system that generates scan results that permit response to a host command using existing cached data having a logical block address (LBA) range that overlaps a host command LBA range. The cache control system forms variable length segments of memory clusters in a cache memory for caching disk data in contiguous LBA ranges. The cached LBA ranges are scanned for segments having LBA ranges overlapping with an LBA range of a host command. The cache control system is effective in exploiting any existing overlapping cache data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.