I believe the number of GC's would really still be dependent on your site topology, number of objects published to the GC, number of child domains in the forest etc.. and location of Exchange servers in relation to users. Also if clients are using applications that are directly dependent on the GC, like online Outlook GAL lookups.
 
The Active Directory Sizer tool Microsoft released early during the Windows 2000 release really is pretty much useless as it references pretty old hardware such as 700Mhz Pentium II Xeon processors and there really isn't much else available on the MS site as far as specifics. They usually just say things like have a GC located close to clients that use GC dependent processes such as the GAL and having redundant GC's in sites that contain Exchange servers.
 
 
Ion V. Gott
 
 


From: [EMAIL PROTECTED] on behalf of Jeremy Olson
Sent: Tue 1/31/2006 4:22 PM
To: [email protected]
Subject: [ActiveDir] x64 domain controller sizing?

Is there any recommondations for the number of x64 GC to exchange 2003 servers?  We are about to start deploying 2003 domain controllers.  I would rather use fewer x64 servers.  The dit file is about 4.6 gigs.

Thanks

Jeremy

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