We run Exchange 2000 (SP3) in an active passive Veritas cluster environment on Windows 2000 (SP3) operating system. Our domain controllers were migrated from Windows 2000 to Windows 2003 in early 2005. We are decommissioning our old hardware (DELL PowerEdge Servers) and storage array (EMC) and moving towards commissioning new PowerEdge Servers and new Hitachi SAN. What could be the best approach in doing this with minimal downtime and best results? Can we keep the same Exchange Virtual Name? Any suggestions or advices will be highly appreciated. Thanks much