Having multiple cpanel servers under the same domain name, how, what are the best practices?

Dear Forum members, Our first cpanel server reaches it's EOL, and I'd like to install in parallel a second, and maybe a third completely separate Cpanel/WHM instance. As cpanel runs fluently while it maintains it's dns records, ideally what are the hosts that has to be set up for the new servers, with the appropriate A recrods, to work without any issues? our current setup: cpanel.xxx.yyy , the xxx.yyy domain is handled by cpanel.xxx.yyy If I add : cpanel2.xxx.yyy, and cpanel3.xxx.yyy what dns records should I set for these servers to work? Is it an intended setup, or should I just register a new domain name? Thanks, Balazs