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