Lsi Corporation

Steve Johnson

Owen N Parry

The present invention is directed to a method for deterministic Serial Attached Small Computer System Interface (SAS) discovery and configuration. The method includes transmitting a Serial Management Protocol (SMP) DISCOVER Request from a node of a SAS domain to each expander of the SAS domain. The method further includes receiving SMP DISCOVER Responses at the node from each expander of the SAS domain. The method further includes comparing BROADCAST (CHANGE) RECEIVED (BCR) counts provided in each of the received SMP DISCOVER Responses to stored BCR counts, said stored BCR counts having been recorded and stored by the node prior to said transmitting of said SMP DISCOVER Request. The method further includes updating the stored BCR counts based upon said received BCR counts. The method further includes selectively transmitting a second SMP DISCOVER Request from the node to at least one, but not all of the expanders of the SAS domain.

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Colorado Springs, CO, United States of America

Steve Johnson