I'm planning to start migrating public folder data between an existing Exchange 2003 server to a new Exchange 2007 server. I've read a number of website which recommends disabling AV on the servers to help speed up the data exchange. I was hoping someone can clarify if it's necessary to disable it on both servers and detail what benefits and problems this has. We are using Symantec's Mail security for exchange. I was wondering if this product has any bearing on these recommendations.