Using external memory devices to improve system performance

Details Using external memory devices to improve system performance Using external memory devices to improve system performance

2004-10-21

2009-02-10

Shah, Sanjiv (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S004000, C711S100000, C711S104000, C711S105000, C711S111000, C711S113000, C711S114000, C711S115000, C710S301000, C710S302000, C719S321000, C719S325000, C719S326000, C719S327000, C709S205000

Reexamination Certificate

active

07490197

ABSTRACT:
The invention is directed towards a system and method that utilizes external memory devices to cache sectors from a rotating storage device (e.g., a hard drive) to improve system performance. When an external memory device (EMD) is plugged into the computing device or onto a network in which the computing device is connected, the system recognizes the EMD and populates the EMD with disk sectors. The system routes I/O read requests directed to the disk sector to the EMD cache instead of the actual disk sector. The use of EMDs increases performance and productivity on the computing device systems for a fraction of the cost of adding memory to the computing device.

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