[Samba] GID mappings of built-in groups when addin additional dc

[Trenta sis]

Hi,

I have a samba 4.4.5 AD domain and is working perfect, but now I need to
add a second samba 4 AD, I have found that in
https://wiki.samba.org/index.php/Join_an_additional_Samba_DC_to_an_existing_Active_Directory
is detailed the correct steps, my question is about step related with
winbind (tdbbackup) builtin groups, appears a message "*NOTE: Only do this
if you are running a version of Samba before 4.2.0 or are using the
built-in winbind.*" but I'm not sure if in my environment I have to make
this step.

I have installed and configured samba 4.4.5 from sources and only added
https://wiki.samba.org/index.php/Setup_Samba_as_an_AD_Domain_Member#libnss_winbind
https://wiki.samba.org/index.php/Libnss_winbind_links

In my environment is needed tdbbackup when you adds second dc?

Thanks