Extremely slow Mailbox move between Exchange 2007 and Exchange 2013

I am trying to migratemailboxesfromanExchange 2007 server withall roleson a single servertoa newExchange2013server Environment (two serverswith both rolesinstalled). I also have aDAG.

My problemis that it takesan extremely long timeto move largemailboxes(2 GB andlarger). I useEACfor mailboxmove.Smallmailboxes arenot a problem.

I've found thatif I restart the Microsoft Exchange MailboxReplication Service the migration starts over again but after a while it hangsagain.

Does anyone have any idea where the problem lies.I cannot holdon to restart the service all the timethen the migration will take months to complete.It's a small organization.

For information, I run the following commandswithout success (KB951037).

• netsh int tcp set global chimney=disabled
  netsh int tcp set global rss=disabled
  netsh int tcp set global autotuninglevel=disabled

Then rebooted the servers.

Michael Wiskman