Configuring and unconfiguring path failover support
Path failover support is not enabled automatically when the device driver is installed. It must be configured initially on each logical device after installation. When path failover support is enabled for a logical device, it remains set until the device is deleted or the support is unconfigured. The alternate path failover setting is retained even if the system is rebooted.
chdev -l smc0 -aalt_pathing=yes chdev -l smc1 -aalt_pathing=yes chdev -l smc0 -aalt_pathing=no chdev -l smc1 -aalt_pathing=no