Yes it does work but make sure your system is configured correctly first. Download the HA Configuration Checker (cf-config-check.cgi) tool and test the config. Even then it is best to take a 'pratice' before you do it with live data. If your system is already in production, download the NetApp simulator and create a HA pair. Then connect your iSCSI hosts to the VMs and begin testing. This way you can confirm MPIO, IP routing and everything else is correct.