The access is provided either via {HEAD ~ block level requests} over {TAIL ~ the SAN} or via file level requests made to a server over a local area network  
The access is provided either via { HEAD ~ block level requests } over { TAIL ~ the SAN } or via file level requests made to a server over a local area network
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH