Disk acceleration using first and second storage devices
US7127549B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2004 |
| Grant date | Oct 24, 2006 |
| Priority date | — |
| Expiry date | Dec 15, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0685
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data storage device is provided. A disk device is combined with a non-volatile memory device to provide much shorter write access time and much higher data write speed than can be achieved with a disk device alone. Interleaving bursts of sector writes between the two storage devices can effectively eliminate the effect of the seek time of the disk device. Following a non-contiguous logical address transition from a host system, the storage controller can perform a look-ahead seek operation on the disk device, while writing current data to the non-volatile memory device. Such a system can exploit the inherently faster write access characteristics of a non-volatile memory device, eliminating the dead time normally caused by the disk seek time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.