[Samba] Can Samba Be a Backup Domain Controller to an NT4 PDC?

[James Knott]

Joris De Pooter wrote:
> Hello people,
> 
> taken from
> http://us3.samba.org/samba/docs/man/Samba-HOWTO-Collection/samba-bdc.html#minim-bdc
> 
> 
>> Can Samba Be a Backup Domain Controller to an NT4 PDC?
>>
>> No. The native NT4 SAM replication protocols have not yet been fully
>> implemented.
>>
>> Can I get the benefits of a BDC with Samba? Yes, but only to a Samba
>> PDC.The main reason for implementing a BDC is availability. If the PDC
>> is a Samba machine, a second Samba machine can be set up to service
>> logon requests whenever the PDC is down. 
> 
> 
> I don't understand what this means.
> I have a NT4 PDC and a NT4 BDC : they are on a different network.
> The BDC is old and i'd like to upgrade to Samba3.
> 
> Do you think it is possible or not ??
> 
> 

As I understand it, both primary and backup domain controllers, must be
either Windows or Linux.  You can't mix them