Domain controller Failover

Our site has 2 domain controllers but we are looking to setup a
failover site incase of a disaster. We are looking at the possiblitiy
of loosing our primary and secondary domain controller and in that case
we would like to failover to a domain controller in a backup site in
another state. What would be the best setup for something like this as
far as windows server is concerned?

I know this is vague but heres a base over view of the topology. One
corporate office that does our VPN and everything else. So if a user
is at home and tries to jump on the VPN they will always be able to get
on but they might not be able to get to resources in our office
depending on if we are down. if this is the case we want it to
failover. Is this possible?

The problem is corporate doesnt run Windows so they are just sort our
authentication on VPN and then a passthrough. Any ideas?

Thanks - jon

In news:(E-Mail Removed) oups.com,
(E-Mail Removed) <(E-Mail Removed)> stated, which I commented on below:
> Our site has 2 domain controllers but we are looking to setup a
> failover site incase of a disaster. We are looking at the possiblitiy
> of loosing our primary and secondary domain controller and in that
> case we would like to failover to a domain controller in a backup
> site in another state. What would be the best setup for something
> like this as far as windows server is concerned?
>
> I know this is vague but heres a base over view of the topology. One
> corporate office that does our VPN and everything else. So if a user
> is at home and tries to jump on the VPN they will always be able to
> get on but they might not be able to get to resources in our office
> depending on if we are down. if this is the case we want it to
> failover. Is this possible?
>
> The problem is corporate doesnt run Windows so they are just sort our
> authentication on VPN and then a passthrough. Any ideas?
>
> Thanks - jon

If it's not a DC failover, but rather an applkciation failover, it would be
better to use software to do this. If expecting DNS to do this, forget it.
However, Sites in AD will have a user in one Site use that DC, but it will
failover to another site, but there is lag time before that happens. It may
be better off using Clustering for the DCs, SQL, or whatever aopp you are
looking to provide the fault tolerant uptime. If it's a web based app,
better off using something like BigIP.

--
Ace
Innovative IT Concepts, Inc (IITCI)
Willow Grove, PA

This posting is provided "AS-IS" with no warranties or guarantees and
confers no rights.

Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft MVP - Directory Services
Microsoft Certified Trainer

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