Now, if you are trying to determine whether a GC should be place in a particular geographical region of an office building of your enterprise, you will need to consider how many domains you have, (this affects the size of the GC's database as well as the number of requests that will target the GC) and the bandwidth between the office WITH a GC and the one without. When any user logs on for the first time, Win2000 attempts to contact a GC. If this remote office has a lot of users, you may want to make sure a GC is there. If they don't have too many, or won't be accessing resources from multiple domains, it is not as critical.
This was first published in April 2002