Automatic Failover is one of the features included with SNAP HA.™ Once SNAP HA™ is setup no additional configuration is required to make Automatic Failover work.
SNAP HA™ Automatic Failover works via the use of the SoftNAS health monitor. When the health monitor detects a failure or is unable to reach the SoftNAS node, it will auto failover to the other node and move all NAS services over to the other side.