We currently have a 12.1.6 MP6 SEPM server running on Windows Server 2008 R2 managing 135 12.1.6 MP 5 and MP6 clients at our primary location which only has one SEP Site and one Active Directory Site.
We are building a new data center at another location which will be a new AD site and will be migrating all or our servers to this new location. We would like to build a new SEP14 SEPM server at this new data center running on Windows Server 2012 R2 to manage our current 12.1.6 clients that will remain at their current location (other then the servers). The new server will be using a different ip subnet but will connect to the clients over a dedicated WAN link.
We would like to migrate clients from old SEPM server to the new SEPM server one at a time to make sure there are no issues, especially since we will be migrating servers to the new data center one at a time.
Should we create a new SEP site for this new server?
Do we need to install SEPM 12.1.6 on the new server and establish replication with the existing SEPM 12.1.6 server then upgrade it to SEPM 14?
Or do we need to upgrade our current 12.1.6 SEPM server to SEP 14 first, and then build the new SEPM 14 server at the new site and establish replication then?
Or should we install 12.1.6 on the new server, backup our current SEPM 12.1.6 server and do a Disaster Recovery to the new server, and then upgrade it to SEPM 14?
Any assistance would be greatly appreciated. Thanks