{HEAD ~ Portion} of {TAIL ~ data stream} or data block 200 is to be stored in storage device 210, representing a storage device of a storage system  
of
{ HEAD ~ Portion } of { TAIL ~ data stream } or data block 200 is to be stored in storage device 210 , representing a storage device of a storage system
HEAD HEAD HEAD HEAD HEAD REL TAIL 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