Hi Patrick, According to the mailing list at www.activedir.org (an awesome Active Directory mailing list with both MVP's and Microsoft Directory Services designers subscribed) the more GC's the better, particularly in a small environment like yours (which sounds spookily like mine). You wouldn't want to have remote DC's as GC's due to the amount of data to be replicated, but when the DC's are directly connected (via LAN) it makes it quicker for Exchange to resolve things. As far as I know you don't need to do anything on the Exchange server. Just promote the other DC to GC and Exchange will find out via AD replication. I would advise you do some searching for past questions regarding multiple GC's on the activedir.org web site rather than take what I have said for gospel but this is what I have heard several times I believe. Andrew From: Patrick [mailto:london31uk@xxxxxxxxx] Sent: 02 December 2008 10:44 To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Re: Would an extra GC server help? - exchange 2003 Ok, so should not have any adverse effect. How do I then point the new GC to exchange ? ________________________________ From: Brian Pituley <bpituley@xxxxxxxxxxxxxxxx> To: exchangelist@xxxxxxxxxxxxx Sent: Monday, December 1, 2008 9:03:33 PM Subject: [ExchangeList] Re: Would an extra GC server help? - exchange 2003 AFAIK, redundant GCs are always a good idea. Brian Pituley Director of Information Technology T: 408-441-3611 F: 408-441-8405 E: bpituley@xxxxxxxxxxxxxxxx From: exchangelist-bounce@xxxxxxxxxxxxx [mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Patrick Sent: Monday, December 01, 2008 12:48 PM To: exchangelist@xxxxxxxxxxxxx Subject: [ExchangeList] Would an extra GC server help? - exchange 2003 Hi guys, I have just inherited a new site, and it looks like they are having issues with thier main dc. I recently installed exchange 2003 on windows 2003, but all of a sudden exchange has started fall off, on closer inspection, it looks like the DC is having some sort of network issue, affecting dns and GC. Current environment 2 DC's 1 Exchange server. All windows 2003. My question, would it help to make the second dc a Global Catalog server? so as to maintain some sort of redundancy while we figure out what to do with the Primary DC. Any issues to expect? or is there no point? Thanks Patrick ________________________________ The information in this communication and any attachments is confidential and may be legally privileged. If you are not the intended recipient, any use, review, dissemination, distribution or copying of this information is strictly prohibited. If you have received this communication in error please notify us immediately and delete the original message and any copies of it. Any opinions, conclusions or other information in this message that do not relate to the official business of the company are neither given nor endorsed by the company. Scion Capital, LLC(r) is a registered trademark of Scion Capital, LLC with the United States Patent and Trademark Office. ________________________________