Storage system and a file layer management method
US8037111B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2009 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Apr 14, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/13
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A file server holding tag information representative of file contents and an access frequency of each file calculates a tag rating from the access frequency of each file and calculates a file rating from the tag rating affixed to the file. It controls to place a file having a high calculated file rating on a higher transfer performance layer, and place a file having a low calculated file rating on a lower transfer performance layer. Rapid accesses can be handled quickly by placing in advance a file whose access is anticipated to be increased after interest is increased although an access frequency is still low, on a layer having a short response time and high throughput, and by maintaining a file whose access is anticipated to be increased because of increased interest although an access frequency is lowered, on a layer having a short response time and high throughput.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.