System and method of cache management for storage controllers

Details System and method of cache management for storage controllers System and method of cache management for storage controllers

2006-07-18

2006-07-18

Vital, Pierre (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Specific memory composition

C711S141000

Reexamination Certificate

active

07080197

ABSTRACT:
The present invention is directed to a system and method of cache management for storage controllers. In an aspect of the present invention, a system for storing electronic data may include a host and a data storage apparatus communicatively coupled to the host. The host has cache coherency functionality. The data storage apparatus includes a first storage controller communicatively coupled to at least one storage device, the first storage controller further coupled to a first cache. A second storage controller is also included, which is communicatively coupled to at least one storage device, the second storage controller further coupled to a second cache. The cache coherency functionality of the host provides coherency of the first cache coupled to the first storage controller with the second cache coupled to the second storage controller.

REFERENCES:
patent: 6052758 (2000-04-01), Crockett et al.
patent: 6073218 (2000-06-01), DeKoning et al.
patent: 2001/0002480 (2001-05-01), Dekoning et al.
patent: 2003/0126347 (2003-07-01), Tan et al.
IBM International Technical Support Organization, “Planning for IBM Remote Copy,” International Business Machines Corp., 1995, pp. 98, 131-132.

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