analyzing the storage arrays for their available performance capability in light of {HEAD ~ the performance requirements} for {TAIL ~ the logical data volume} 
for
analyzing the storage arrays for their available performance capability in light of { HEAD ~ the performance requirements } for { TAIL ~ the logical data volume }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL