receiving by a data migration node in {TAIL ~ a network} an indicator that the data migration node is responsible for managing data migration from a first storage to {HEAD ~ a second storage} 
receiving by a data migration node in { TAIL ~ a network } an indicator that the data migration node is responsible for managing data migration from a first storage to { HEAD ~ a second storage }
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD