Data prefetch in storage device
US7624091B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 2004 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Dec 20, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A meta data server 100, a user node 200 and a storage device 300 are connected together via a Fibre channel 10 and a LAN 20 to configure a NAS over SAN system. The user node 200 sends out a request to access the data in each file. The file is stored in the storage device 300 in blocks of default size. The meta data server 100 informs the user node 200 of the block number where the file to be accessed is stored based on meta data in which relationship between a file and a block is recorded. Prior to this processing, the meta data server 100 instructs the storage device 300 to cache the data in advance. This application enables the storage device 300 to provide the data promptly in response to read request from the user node 200.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.