Multi-tier data storage system
US6839803B1 · kind B1 · utility
134Cited by
32References
90Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1999 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | May 14, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D15/005
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multi-tier data storage system includes a first data storage unit for storing recently loaded data files; a second data storage unit coupled to the first data storage unit for archiving data files residing on the first data storage unit for more than a predetermined period of time; and, a third data storage unit coupled to the second data storage unit, the third data storage unit caching files archived in the second data storage unit if the data file is unavailable on the first data storage unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.