I'm finally convincing myself to retire the old Windows 2003 server that I have running alongside Zentyal since I have SMB1 long disabled. Looking for the best practices when having two Zentyal servers. Last time I attempted two Zentyal servers dcpromo failed on the old 2003 box and the DNS_Zentyal domain account broke on the original server when I brought the new Zentyal server online. As of now I have all 7 FSMO roles transferred to Zentyal.
1) Are there any gotchas on the dcpromo for a 2003 box as long as the FSMO roles are transferred?
2) Has anyone else had the DNS_Zentyal account problem with two Zentyals?
3) On the domain tab, do I set my first one up as "Domain controller" and the new one as "Additional Domain Controller"?
4) What else am I missing? What, if any, functionality will I lose by tombstoning the 2003 server?