In one embodiment, a network device in a network obtains {HEAD ~ information} identifying {TAIL ~ first storage} and second storage 
identifying
In one embodiment , a network device in a network obtains { HEAD ~ information } identifying { TAIL ~ first storage } and second storage
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH