Compaq StorageWorks HSZ80 Configuration And Cli Reference Manual page 305

5–119
Due to the amount of information being passed from one controller to the other, this
command may take up to one minute to complete.
Example
This example shows how to configure two controllers to operate in dual-redundant
mode within a multiple bus environment:
SET THIS_CONTROLLER PORT_1_ID=(0,1,2,3)
RESTART THIS_CONTROLLER
SET MULTIBUS_FAILOVER COPY=THIS_CONTROLLER
The configuration on "this controller" is automatically copied to the "other
controller" when you issue the SET MULTIBUS_FAILOVER COPY command. If
you want to prefer specific units to specific controllers, use the following command
after setting multiple bus failover:
SET D100 PREFERRED_PATH=THIS_CONTROLLER
SET D101 PREFERRED_PATH=OTHER_CONTROLLER
See also
SET FAILOVER
SET NOFAILOVER
SET NOMULTIBUS_FAILOVER
Compaq HSZ80 Array Controller ACS Version 8.3 Configuration and CLI Reference Guide