Patent 7912995 was granted and assigned to EMC on March, 2011 by the United States Patent and Trademark Office.
SAS topology is managed. Internally within a SAS device on a SAS network, a performance characteristic of a PHY of the SAS device is monitored. Internally within the SAS device, it is determined, based on the performance characteristic, that the PHY has a problem, and, based on the determination, the PHY is affected to help prevent the PHY from adversely affecting communications on the SAS network.