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