Why would GC be homed on server other than Exchange?

Why would GC be homed on server other than Exchange?

Inherited this network, trying to figure out why things are the way they are.

Multi server 2k3 AD environment
Exchange 2003 SP1, single server in Exchange Service Manager.

Users can find names in the Global Address List by clicking on the To button 
and selecting them from the Address book, or by typing them in To: field and 
waiting a bit.
DC-1 runs Active Directory, is Global Catalog, Exchange 2003, DNS, DHCP, WINS
DC-2 runs Active Directory, is Global Catelog, and DNS

In Outlook Address Book, properties for the Global Catelog Server points to 
DC-2, rather than DC-1.  Are there reasons why you would home the GC on a 
server other than the Exchange server?  Can a copy exisit on both servers?  
If so, how do we replicate it so a copy resides on the Exchange box?

Thanks in advance,  Jon

date: Mon, 24 Apr 2006 11:25:02 -0700 author: Jonr451

Re: Why would GC be homed on server other than Exchange?

In news:0E574AE0-4A29-4D8D-97E0-FA70A735E1A3@microsoft.com,
Jonr451  typed:
> Inherited this network, trying to figure out why things are the way
> they are.
>
> Multi server 2k3 AD environment
> Exchange 2003 SP1, single server in Exchange Service Manager.
>
> Users can find names in the Global Address List by clicking on the To
> button and selecting them from the Address book, or by typing them in
> To: field and waiting a bit.
> DC-1 runs Active Directory, is Global Catalog, Exchange 2003, DNS,
> DHCP, WINS DC-2 runs Active Directory, is Global Catelog, and DNS
>
> In Outlook Address Book, properties for the Global Catelog Server
> points to DC-2, rather than DC-1.  Are there reasons why you would
> home the GC on a server other than the Exchange server?  Can a copy
> exisit on both servers? If so, how do we replicate it so a copy
> resides on the Exchange box?
>
> Thanks in advance,  Jon

Any DC can be a GC...and it's often recommended that you make all DCs global 
catalog servers.

date: Mon, 24 Apr 2006 15:59:22 -0400 author: Lanwench [MVP - Exchange]

RE: Why would GC be homed on server other than Exchange?

I've learned a little more since my earlier post:
DC-1 Win2k3 SP1, AD, GC, DNS, DHCP, WINS (Exchange server is not running 
here, but System manager is installed)
DC-2 Win2k3 SP1, AD, GC, DNS, Home for Global Address List
Member Server-3 Win2k3, Exchange 2k3 SP1, no AD, no GAL

Sorry for my lack of clarity in earlier post.  What I see is that the Global 
Address Book is homed to a server that is not running an instance of 
Exchange.  It is simply a DC.  In my experience, I've never seen the Global 
Address Book anywhere other than on an Exchange server.  
Are there reasons why you would home the GAL on a server other than the 
Exchange server?  Can a copy exisit on both servers?  If so, how do we 
replicate it so a copy resides on the Exchange box?  If not, should we move 
the GAL to the Exchange server instead of DC-2

Thank you Lawrence for your earlier response, unfortunately for me it was a 
wonderful answer to my unclear question.

Thanks in advance for any additional info,  Jon

"Jonr451" wrote:

> Inherited this network, trying to figure out why things are the way they are.
> 
> Multi server 2k3 AD environment
> Exchange 2003 SP1, single server in Exchange Service Manager.
> 
> Users can find names in the Global Address List by clicking on the To button 
> and selecting them from the Address book, or by typing them in To: field and 
> waiting a bit.
> DC-1 runs Active Directory, is Global Catalog, Exchange 2003, DNS, DHCP, WINS
> DC-2 runs Active Directory, is Global Catelog, and DNS
> 
> In Outlook Address Book, properties for the Global Catelog Server points to 
> DC-2, rather than DC-1.  Are there reasons why you would home the GC on a 
> server other than the Exchange server?  Can a copy exisit on both servers?  
> If so, how do we replicate it so a copy resides on the Exchange box?
> 
> Thanks in advance,  Jon

date: Mon, 24 Apr 2006 14:33:02 -0700 author: Jonr451

Re: Why would GC be homed on server other than Exchange?

GAL is integrated with Active Directory so you can not move it to the 
exchange box.  In the old exchange 55 days GAL was on the exchange box. 
Exchange uses the GC server to get the GAL information.

rgds
Eric
"Jonr451"  wrote in message 
news:C7CFE1F6-7005-42A9-BDB3-351E973423D4@microsoft.com...
> I've learned a little more since my earlier post:
> DC-1 Win2k3 SP1, AD, GC, DNS, DHCP, WINS (Exchange server is not running
> here, but System manager is installed)
> DC-2 Win2k3 SP1, AD, GC, DNS, Home for Global Address List
> Member Server-3 Win2k3, Exchange 2k3 SP1, no AD, no GAL
>
> Sorry for my lack of clarity in earlier post.  What I see is that the 
> Global
> Address Book is homed to a server that is not running an instance of
> Exchange.  It is simply a DC.  In my experience, I've never seen the 
> Global
> Address Book anywhere other than on an Exchange server.
> Are there reasons why you would home the GAL on a server other than the
> Exchange server?  Can a copy exisit on both servers?  If so, how do we
> replicate it so a copy resides on the Exchange box?  If not, should we 
> move
> the GAL to the Exchange server instead of DC-2
>
> Thank you Lawrence for your earlier response, unfortunately for me it was 
> a
> wonderful answer to my unclear question.
>
> Thanks in advance for any additional info,  Jon
>
>
>
> "Jonr451" wrote:
>
>> Inherited this network, trying to figure out why things are the way they 
>> are.
>>
>> Multi server 2k3 AD environment
>> Exchange 2003 SP1, single server in Exchange Service Manager.
>>
>> Users can find names in the Global Address List by clicking on the To 
>> button
>> and selecting them from the Address book, or by typing them in To: field 
>> and
>> waiting a bit.
>> DC-1 runs Active Directory, is Global Catalog, Exchange 2003, DNS, DHCP, 
>> WINS
>> DC-2 runs Active Directory, is Global Catelog, and DNS
>>
>> In Outlook Address Book, properties for the Global Catelog Server points 
>> to
>> DC-2, rather than DC-1.  Are there reasons why you would home the GC on a
>> server other than the Exchange server?  Can a copy exisit on both 
>> servers?
>> If so, how do we replicate it so a copy resides on the Exchange box?
>>
>> Thanks in advance,  Jon

date: Wed, 26 Apr 2006 14:53:16 +1000 author: eric hela