As previously explained, {TAIL ~ this type} of VMS 300 has one active network interface sub system , where another sub system 320 is available as a back up to {HEAD ~ the active network interface sub system} 310 in case the active sub system 310 fails 
As previously explained , { TAIL ~ this type } of VMS 300 has one active network interface sub system , where another sub system 320 is available as a back up to { HEAD ~ the active network interface sub system } 310 in case the active sub system 310 fails
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH