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virtual DCs as part of DR Plan ?

Source: microsoft.public.virtualserver
Sent: 05/30/2007
From: Joris <(email address - cut out)>
Message:

Hello,

I'm currently busy creating and testing a disaster recovery plan.
We have a forest with trusts to 5 other forests. The DR Plan I'm
writing only covers our main forest, which contains a top-level
domain, and about 10 child-domains.
The toplevel domain runs on 3 DCs, each running on a physical
machine. For each child-domain, we have on average one physical DC
'in the field', and two DCs running on Virtual Server in our main
centralised computer rooms.

We need a DR Plan to rebuild the whole forest from scratch : we cannot
assume that there are _any_ working DCs left. AD is completely gone
in our worst-case scenario.

So far, I've found several documents that say that the toplevel domain
needs to be restored first.

What I'd like to do is to add an additional DC for the toplevel
domain, running on a virtual server, so that when disaster strikes, I
can restore the backups of this virtual DC onto a new virtual server,
in order to eliminate hardware dependency when restoring.

I'd like to know if Microsoft supports this configuration : that is,
running production DCs (partly) on Virtual Servers. Can anyone point
me in the direction of documents by Microsoft stating that this is a
supported setup ?

Thanks,

Joris.

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Related Messages

RE: virtual DCs as part of DR Plan ?

Sent: 05/30/2007
From: Ash
Message:

Hi

Have a look at -
http://www.microsoft.com/downloads/details.aspx?FamilyId=64DB845D-F7A3-4209-8ED2-E261A117FC6B&displaylang=en

Running domain controllers in virtual machines is best suited for test and
pre-production piloting environments. With strict adherence to the
requirements described in this document, domain controllers running in
virtual machines can also be used in a production environment.

Given that adherence involves the VM not having any FSMO roles (what your
requirement looks like)-
Domain Controller Roles Not Suited to Run in Virtual Machines
Certain domain controller roles require a higher level of availability and
performance than others. Domain controllers installed in virtual machines are
not recommended for the following roles:
â€¢ Operations master role holders (also called flexible single-master
operations, or FSMOs): PDC emulator, RID master, infrastructure master,
domain naming master, and schema master.

HTH

"Joris" wrote:

Show quoted text

> Hello,
>
> I'm currently busy creating and testing a disaster recovery plan.
> We have a forest with trusts to 5 other forests. The DR Plan I'm
> writing only covers our main forest, which contains a top-level
> domain, and about 10 child-domains.
> The toplevel domain runs on 3 DCs, each running on a physical
> machine. For each child-domain, we have on average one physical DC
> 'in the field', and two DCs running on Virtual Server in our main
> centralised computer rooms.
>
> We need a DR Plan to rebuild the whole forest from scratch : we cannot
> assume that there are _any_ working DCs left. AD is completely gone
> in our worst-case scenario.
>
> So far, I've found several documents that say that the toplevel domain
> needs to be restored first.
>
> What I'd like to do is to add an additional DC for the toplevel
> domain, running on a virtual server, so that when disaster strikes, I
> can restore the backups of this virtual DC onto a new virtual server,
> in order to eliminate hardware dependency when restoring.
>
> I'd like to know if Microsoft supports this configuration : that is,
> running production DCs (partly) on Virtual Servers. Can anyone point
> me in the direction of documents by Microsoft stating that this is a
> supported setup ?
>
> Thanks,
>
> Joris.
>
>

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