Re: Using Exchange2003 when the PDC is offline
From: PES (crfgrjneg_at_nqrycuvn.arg)
Date: 11/17/04
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Date: Wed, 17 Nov 2004 05:47:19 -0500
Mark Walsh wrote:
> Our PDC went belly up with a RAID controller failure. The full restore of
> the server from tape takes about 8 hours and is still underway.
>
> However, as soon as the PDC is taken off-line, for any reason, no one can
> connect to the Exchange server, which is also a BDC, using Outlook. Plus,
> OWA also refuses to play while the PDC is off-line. It just keeps coming ups
> with authentication errors, as well as LDAP errors. Once the PDC is back on
> line, these errors go away and the exchange server will start working again.
>
> Now I was of the understanding that a BDC could handle authentication if the
> PDC was off-line.
>
> Or is it the case that having a single server fail, if it is the PDC, then
> all the rest of the servers are inaccessible.
>
> Is this normal behaviour? Not being able to use the Exchange server because
> the PDC is off-line. Doesn't that also make us very vulnerable with all our
> servers being at the mercy of a single server? The SQL server is they same,
> can't authenticate. And it too is a BDC. What have I done wrong?
>
>
There are no bdc or pdc's with Windows 2000 or 2003. There is a pdc
emulator role for backward compatibility. To access exchange from an
outlook client, the client and server need access to a valid domain
controller, a global catalog and dns server with the srv records
registered. There are other roles that may be handled by what you refer
to as the bdc (schema, rid master etc) but it is unlikely that they
would be necessary to continue to connect to the exchange server.
--
-------------------------
Paul Stewart
Lexnet Inc.
Email address is in ROT13
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