This feature is only supported on the 7210 SAS-D and 7210 SAS-Dxp.
The port-based split horizon feature can be used to disable local switching on the 7210 SAS. A loop-free topology can be achieved using split horizon on 7210 SAS switches.
Traffic arriving on an access or an access-uplink port within a split horizon group will not be copied to other access and an access-uplink ports in the same split horizon group, but will be copied to an access-uplink ports in other split horizon groups.
Since split horizon is a per port feature in 7210 SAS, all SAPs associated with the port becomes part of split horizon group configured on that port.