In addition, by replicating {HEAD ~ the conference information} on {TAIL ~ more than one server computer}, the single point of failure limitation is eliminated 
on
In addition , by replicating { HEAD ~ the conference information } on { TAIL ~ more than one server computer } , the single point of failure limitation is eliminated
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH