Thus, when a host command comes from host 12, {HEAD ~ host interface} 26 restores {TAIL ~ power} to the storage device 10 
Thus , when a host command comes from host 12 , { HEAD ~ host interface } 26 restores { TAIL ~ power } to the storage device 10
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH