In accordance with , HDD 20 are preferentially connected to {HEAD ~ row} 3 among {TAIL ~ rows} 1 to 3 and then HDD 20 are preferentially connected to row 2 
among
In accordance with , HDD 20 are preferentially connected to { HEAD ~ row } 3 among { TAIL ~ rows } 1 to 3 and then HDD 20 are preferentially connected to row 2
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH