Patent ID: 7035952
Filing Date: 2006-04-25
Classification: G06F

Abstract:
1. A system, comprising: plural storage subsystems, each storage subsystem having a controller, an expander, and zero or more storage devices coupled to the expander, the controller to access storage devices through the expander, and the expander having interfaces for coupling to storage devices; and an intercontroller link to connect expanders in different storage subsystems to enable the controller in one of the storage subsystems to communicate with the controller in another one of the storage subsystems through the expanders and the intercontroller link, wherein each storage subsystem includes serial attached small computer system interface (SAS) phys, wherein at least one of the expanders includes a SAS phy connected to the intercontroller link, wherein the at least one of the expanders includes a route table for the SAS phy, the route table containing a plurality of entries for routing information in the storage subsystem.