[ovirt-users] VM paused rather than migrate to another hosts

Dear all, I am testing iSCSI bonding failover test on oVirt, but i observed that VM were paused and did not migrate to another host. Please see the details as follows. I have two hypervisors. Since they are running iLO 5 and oVirt 4.2 cannot support iLO 5, thus i cannot setup power management. For the cluster setting, I set "Migrate Virtual Machines" under the Migration Policy. For each hypervisor, I bonded two iSCSI interface as bond 1. I created one Virtual machine and enable high availability on it. Also, I created one Virtual machine and did not enable high availability on it. When i shutdown one of the iSCSI interface, nothing happened. But when i shutdown both iSCSI interface, VM in that hosts were paused and did not migrate to another hosts. Is this behavior normal or i miss something? Thank you all of you. Regards, Terry Hung