HOw does backup domain controller work in 2008?

I have an organization that have an "old" server that they never used.
They have however bought a new server with "server 2008 STD" operating system on it.
Since the old server never was used, there is NOTHING to move or copy over from the old server.
They have also purchased a second copy of Server 2008 STD to be installed on the old server.

When I install the second server (after having made the first, new one, the DC), what do I install it as? WIth NT4 there was Backup domain controller, but as I understand it now that does not exist anymore. So is there a new way of having the second "old" server acting backup to the new one since i have the soft and hardware?

somewhereinafricaAsked:
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Mike KlineCommented:
You install it as an additional domain controller in the domain (sorry I don't have a screenshot right now from the 2008 dcpromo)  i think it is the first choice.

So every DC after NT has a full writable copy.

Some other things you will want to do is make this new DC a global catalog (default in the 2008 dcpromo).

If you are running DNS on the first DC then also install DNS on this new box (Active Directory integrated DNS).

This second DC will replicate with the first DC and they will both service your users and if the first one goes down this will handle things (if the first one goes down hard you have to deal with FSMO roles but you don't need to worry about that right now)

Thanks

Mike
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Windows Server 2008

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