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