We currently have a setup with a FAS2050 that's a dual head single enclosure with 1 shelf of SAS and 5 disks of SATA (Plus internal storage). Right now everything is setup as single path HA and it appears that we should be able to go dual path HA without a problem. The current setup as put in place before my time here and for what ever reason the SAS shelf was setup seperatly from the rest of the shelves.
Anyways, I have created a Visio drawing (It's not the best in the world, but you should get the point) that I will attatch here. It's shows what the configuration currently looks like and how I think it should look. I just want to know if there is a problem with compatability between the two different controllers (SATA shelves have AT-FCX controllers and the SAS has EHS4 controler).