In order to get RHEV-H working under VMware Fusion 8, you will need to make the following edits to your .vmx configuration file. Open the .vmx file in your favorite editor and add the following lines:
vhv.enable = true
apic.xapic.enable = FALSE
scsi0.virtualDev = "lsisas1068"
This should get your VM booting without any kernel panics, or errors about not finding its disks.