Update the Symantec Data Loss Prevention from version 10.5 to version 11.5 and to upgrade the operating system on a server with Windows Server 2003 R2 to Windows Server 2008 R2

Tasked to update the Symantec Data Loss Prevention from version 10.5 to version 11.5 and to upgrade the operating system on a server with Windows Server 2003 R2 to Windows Server 2008 R2.

The following components: Endpoint Server, Enforce Server, Network Prevent EMAIL, Network Prevent WEB, Oracle for Symantec DLP, Network Discover. All components are mounted on separatel servers.

How to do it most effectively, saving settings?

Thanks!