[Samba] Acronyms: what is PDC and BDC?

Marc Muehlfeld samba at marc-muehlfeld.de
Mon Mar 3 09:47:55 MST 2014


Am 03.03.2014 12:55, schrieb L.P.H. van Belle:
> PDC = Primary Domain Controller
> BDC = Backup Domain Controller
> both are NT4 style.


> DC = Domain controller
> in the "AD style" we dont have PDC of BDC.
> Just DC ( or AD DC )

The AD DC are all the same and replicating their directory content to 
each other (multi-master configuration).

Sometimes here on the list, some people say "PDC", but talking about an 

There is a PDC FSMO role in AD. But this is just a role in a domain, one 
DC have. It's not what it was at NT4 time. See here for descriptions 
about the different FSMO roles: http://support.microsoft.com/kb/223346/en

> the First DC had all FSMO roles.

But of course you can transfer a single up to all roles to other DCs if 
you have more than one.


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