We don't have the Auto Failover for FC volumes but you can do the manual failover, also for NAS and iSCSI volumes.

See link below for more details and though it talks about iSCSI for the setup this can be for FC as well.

http://www.open-e.com/library/how-to-resources/

2008 - Open-E DSS Synchronous Volume Replication over a LAN, April 2009