Upon completion of the dual cluster IML, the NVS buffers and {HEAD ~ cache buffers} of the two clusters are initialized to a size equal to the smaller NVS buffer and the storage control unit is operated in {TAIL ~ a dual cluster mode} 
Upon completion of the dual cluster IML , the NVS buffers and { HEAD ~ cache buffers } of the two clusters are initialized to a size equal to the smaller NVS buffer and the storage control unit is operated in { TAIL ~ a dual cluster mode }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL