In the Figs., the relative size of the pre change buffers 133A, 135A, 143A and 145A of the NVS and cache of {HEAD ~ the first and second clusters} 130 and 140 is exaggerated for {TAIL ~ clarity} 
In the Figs . , the relative size of the pre change buffers 133A , 135A , 143A and 145A of the NVS and cache of { HEAD ~ the first and second clusters } 130 and 140 is exaggerated for { TAIL ~ clarity }
OTH OTH OTH 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 HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL