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

[Joris De Pooter]

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 ??


-- 
Joris De Pooter