System method and circuit for retrieving into cache data from one or more mass data storage devices
US7430641B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2004 |
| Grant date | Sep 30, 2008 |
| Priority date | — |
| Expiry date | Apr 4, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0866
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
According to some embodiments of the present invention, a data storage system may include a plurality of controllers connected or otherwise associated with one or more mass data storage devices. One controller may signal to one or more other controllers an indication as for which data blocks it has received requests. A prefetch decision module on a controller may decide to prefetch some or all of the data blocks associated with a given logical data unit based on data block requests it has received and based on requests received by other controllers. A prefetch decision module on a first controller may signal one or more other controllers to prefetch one or more data blocks associated with a given logical unit and which reside on mass storage devices either connected or otherwise associated with each of the one or more controllers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.