Increasing the capacity of {HEAD ~ the message store} 50 only requires increasing either or both of {TAIL ~ the maximum number} of index nodes 55 a c and storage nodes 
Increasing the capacity of { HEAD ~ the message store } 50 only requires increasing either or both of { TAIL ~ the maximum number } of index nodes 55 a c and storage nodes
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH