Further, the invention relates to a cache device and a method for performing {HEAD ~ high speed data write} and read between a host and {TAIL ~ a storage device} 
between
Further , the invention relates to a cache device and a method for performing { HEAD ~ high speed data write } and read between a host and { TAIL ~ a storage device }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL