Re: Domain Controller Advice

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From: Miha Pihler [MVP] (mihap-news_at_atlantis.si)
Date: 02/15/05 

Date: Tue, 15 Feb 2005 13:25:30 +0100

Hi Mark,

How is your DNS setup? Are both of your domain controllers also DNS servers
for your active directory domain? Do your clients have both server (DC1 and
DC2) listed as DNS servers (set under TCP/IP properties).

Clients use DNS to located domain controllers, global catalogs etc... If you
only have one DNS server or if your clients has only one DNS server set for
preferred DNS server (under TCP/IP properties) and this DNS server goes down
clients will fail to find other domain controllers. 

-- 
Mike
Microsoft MVP - Windows Security
"Marka" <marka@REMOVETH1Slamberteng.com> wrote in message 
news:esSmpe1EFHA.2828@TK2MSFTNGP09.phx.gbl...
> We are a single site with a Windows 2000 domain. We have 2 DC's - DC1 & 
> DC2.
>
> DC1 was the first one to be installed and has all the five FSMO roles 
> running on it.
>
> We also made DC2 into a Global Catalog Server as Exchange 2003 (which we 
> have running on a 2003 member server) wouldn't run if DC1 went down..
>
> Our MAIN concern is if DC1 fails, we would need DC2 to run on its own.
>
> We tested this situation by shutting down DC1, leaving DC2 running.
>
> When running on DC2, a number of our client machines were very slow and 
> not usable, but some of our client machines seemed to be running OK ??
>
> What would we need to do to make sure DC2 can run all clients OK if DC1 
> goes down.
>
> Thanks
>
> Mark
>

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