File input/output control device and method for the same
US7159050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2004 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Nov 1, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a technology for dividing a file into a plurality of fragments which are distributed to a plurality of storage devices, to maintain a high level of security and fault tolerance, while storing the file on fewer storage devices than in the past.A file input/output control device 200, upon receiving a file from a client 100, constructs a plurality of fragments from a file with reference to a predetermined number of divisions and redundancy. A file input/output control device 200 allows a plurality of fragments to be stored on a single storage device, but distributes fragments to storage devices 300 in such a way as to avoid sending a single type of fragment to any one storage device, and to avoid sending all types of fragments to any one storage device. By so doing, file input/output control device 200 ensures security against cracking and system fault tolerance, while enabling files to be stored on fewer storage devices than in the past.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.