I have a windows server 2003 server running as a domain controller, I have accounts, groups, etc. all right and running right there.
Here's a warning from microsoft that server 2003 will no longer be supported by microsoft as everyone should know already
So I started testing samba4 with DC (domain controller) support and ran very well, it can be managed by RSAT (Remote Server Administration Tools), just not I know how to do this part of migrating accounts, groups, etc. of DC microsoft for that done in samba4, I also heard something like promote a and / or replicate, that part is what I do not know, I do not even know if it is possible to do this environment that I have "samba4 < - > microsoft"