Why does my network crash when 1 DC goes down?

We are currently running 3 domain controllers--two are running Windows
2003 Server and one running Windows 2000 Server. I rebooted a Windows
2003 Server which is not the Schema or Operations Master and noticed
that my authentication to network shares to other servers went down.
Why would this happen? I thought because we have several DC's AD
should be fairly redundant and this should not happen?

Which servers are also Global Catalog servers? You should have at least
one GC running at all times.

-Brad


______________________________________
Bradley J. Dinerman, MVP - Windows Server Systems
President, New England Information Security Group
http://www.neisg.org

(E-Mail Removed) wrote:
> We are currently running 3 domain controllers--two are running Windows
> 2003 Server and one running Windows 2000 Server. I rebooted a Windows
> 2003 Server which is not the Schema or Operations Master and noticed
> that my authentication to network shares to other servers went down.
> Why would this happen? I thought because we have several DC's AD
> should be fairly redundant and this should not happen?
>

How do I find out which server(s) are the global catalog servers?
thanks!

Brad Dinerman [MVP - Windows Server Networking] wrote:
> Which servers are also Global Catalog servers? You should have at least
> one GC running at all times.
>
> -Brad
>
>
> ______________________________________
> Bradley J. Dinerman, MVP - Windows Server Systems
> President, New England Information Security Group
> http://www.neisg.org
>
> (E-Mail Removed) wrote:
> > We are currently running 3 domain controllers--two are running Windows
> > 2003 Server and one running Windows 2000 Server. I rebooted a Windows
> > 2003 Server which is not the Schema or Operations Master and noticed
> > that my authentication to network shares to other servers went down.
> > Why would this happen? I thought because we have several DC's AD
> > should be fairly redundant and this should not happen?
> >

I found that we have two Global Catalog servers running. Both were
running when I took down the domain controller and ran into the issue.

(E-Mail Removed) wrote:
> How do I find out which server(s) are the global catalog servers?
> thanks!
>
> Brad Dinerman [MVP - Windows Server Networking] wrote:
> > Which servers are also Global Catalog servers? You should have at least
> > one GC running at all times.
> >
> > -Brad
> >
> >
> > ______________________________________
> > Bradley J. Dinerman, MVP - Windows Server Systems
> > President, New England Information Security Group
> > http://www.neisg.org
> >
> > (E-Mail Removed) wrote:
> > > We are currently running 3 domain controllers--two are running Windows
> > > 2003 Server and one running Windows 2000 Server. I rebooted a Windows
> > > 2003 Server which is not the Schema or Operations Master and noticed
> > > that my authentication to network shares to other servers went down.
> > > Why would this happen? I thought because we have several DC's AD
> > > should be fairly redundant and this should not happen?
> > >

was the server that went down the only dns server?
just like with the GC you have minimally two, so also with MS DNS

No, the other servers also run DNS.

Joshua Bolton wrote:
> was the server that went down the only dns server?
> just like with the GC you have minimally two, so also with MS DNS