Disk acceleration using first and second storage devices

Details Disk acceleration using first and second storage devices Disk acceleration using first and second storage devices

2006-10-24

2006-10-24

Elmore, Stephen C. (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

C711S103000, C711S111000, C711S154000, C711S221000

Reexamination Certificate

active

07127549

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.

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