David,
I take it your trying to setup two servers in a (cluster) that will be used to run the same robot, I would think that the two servers in the cluster also share the Veritas database, of course in a locked mode (using clustering software), meaning one server is the master and the other server is the failover. If this is the case then yes each server would be able to see the robot and each server would have a different device path to the same robot.
As for question 3... acquire a command through Fibre Channel within the SAN only data uses this PATH.
JD