We are currently running 10.3.0a and want to upgrade to 11.1a
Now... the 10.3 servers need to be replaced by new ones (with new OS - 2008R2).

We were thinking of installing a new server with 11.1a to the same zone, connect it to the database, and then release the existing 10.3 servers.
How will removing the first primary server (external database) effect our zone? What about the certificates?

Is there a better way to do this?

Thanks for your ideas.