Distributed storage cache coherency system and method

Details Distributed storage cache coherency system and method Distributed storage cache coherency system and method

2006-03-21

2006-03-21

Chace, Chirstian P. (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S156000

Reexamination Certificate

active

07017012

ABSTRACT:
In a computer system, a distributed storage system having a data coherency unit for maintaining data coherency across a number of storage devices sharing such data is described. The data coherency unit includes logic to monitor data transition states in each of the data storage devices to detect when the processing status of data being shared by two or more of the storage devices changes. The data coherency unit advantageously ensures a status change in shared data in one storage device is broadcast to other storage devices having copies of the data without having each storage device independently monitor adjourning storage devices to detect data state changes.

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