I am in process of installing Exchange 2010 SP2. I want to create the DAG in mailbox servers I have two servers with these roles. But I am confusing that Do I have to create separate volumes for each member server in DAG or I have to have on volume shared between them. How DAG works with SAN in place. I know that as Best practice I should have two separate volume for Database and Logs. But my question is do I have to use shared volume or separate volumes in each server.