Single Global Catalog in Topology Warning message

tadduci
tadduci used Ask the Experts™
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Hello,
On my existing Exchange 2003 server which is a GC/DC I got the following message in the exchange server best practices analyzer tool.

Single global catalog in topology
There is only one global catalog server in the directory service access topology on server SERVERNAME. This configuration should be avoided for fault-tolerance reasons.

I do have two other servers that are domain controllers and global catalog servers in my domain so am I missing something here? Do I need to tell DSAccess that there are more GC's in the domain?

Thank you
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Commented:
When Exchange is installed on a GC/DC you will always get that message.
Exchange will not use any other server for Global Catalog except itself.

You shouldn't have Exchange on a domain controller, but changing the role of the server with Exchange installed is not supported either. You will have to live with it.

Simon.

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Commented:
I am migrating to exchange 2007 starting tomorrow so that issue will go away.
When exchange is not on a DC/GC it will use all the GC's in the domain then?
thanks for the quick reply.
tony
Expert of the Year 2007
Expert of the Year 2006
Commented:
When on a member server Exchange doesn't use all of the global catalogs - it chooses one when it starts and continues to use that one. However it will go looking for another one (eventually) if the preferred one is not available.

Simon.
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No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I will leave the following recommendation for this question in the Cleanup Zone:

          Accept: Sembee

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tigermatt
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