Original Configuration (in Datacenter A)- Server #1 - Win2k3 SP2 & Exch 2K3 SP1 node 1 (cluster) with BackupExec Remote Agent- Server #2 - Win2k3 SP2 & Exch 2K3 SP1 node 2 (cluster) with BackupExec Remote Agent- Server #3 - Windows 2003 SP2 with Back...