The storage control unit receives and processes {TAIL ~ write requests} from {HEAD ~ the host devices} and directs that data updates be temporarily stored in the cache in one cluster and copied to the NVS of the other cluster 
The storage control unit receives and processes { TAIL ~ write requests } from { HEAD ~ the host devices } and directs that data updates be temporarily stored in the cache in one cluster and copied to the NVS of the other cluster
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH