METHOD FOR OPTIMIZING WIDE PORT POWER MANAGEMENT IN A SAS TOPOLOGY

摘要

A SAS expander or initiator places PHYs in a wide port into a persistent reduced power state by signaling to the connected SAS device that the SAS expander or initiator intends to route data traffic through other PHYs in the wide port. The SAS expander or initiator and connected SAS device agree to disuse certain PHYs so that the PHYs enter a reduced power state according to SAS standards.