The message is physically stored in a hierarchical message store using {HEAD ~ the index node and storage node identifiers} for subsequent retrieval and {TAIL ~ scanning} 
for
The message is physically stored in a hierarchical message store using { HEAD ~ the index node and storage node identifiers } for subsequent retrieval and { TAIL ~ scanning }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL