Patent ID: 7017012
Filing Date: 2006-03-21
Classification: G06F

Abstract:
1. A computer system, comprising: a plurality of processing units; a main memory; a plurality of storage devices in communication with said main memory and with said plurality of processing units; and a storage data coherency management system to provide data coherency between said plurality of storage devices containing copies of shared data, said coherency management system monitoring said plurality of storage devices and detecting state changes and data updates to said copies of shared data, wherein said coherency management system notifies ones of said plurality of said processing units that contain said copies of said shared data of said state changes and said data updates when said state changes and said data updates occur, such that said plurality of storage devices are not required to monitor either of address and bus lines of adjacent ones of said plurality of storage devices to detect data updates of shared data among different ones of said plurality of storage devices.