Such a request, for example, may originate from {TAIL ~ a processor} connected to {HEAD ~ the FTL} 
Such a request , for example , may originate from { TAIL ~ a processor } connected to { HEAD ~ the FTL }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD