In one embodiment, {HEAD ~ an optimal sequence} of data movements depends on {TAIL ~ the storage system objectives} 
In one embodiment , { HEAD ~ an optimal sequence } of data movements depends on { TAIL ~ the storage system objectives }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL