global catalog services

[juanb]

Hi !!
two questions please:
1. what is the diffrance between GC and DC ? does any DC is also a GC
?
2. what are the important services running on dc's and gc's?
I just want to monitor critical servies on those services with
unicenter but I dont know which services are important..

thanks very much !!!


juanb

 

[Brian Desmond [MVP]]

Hi there,

This is a great question! Let's say you had a forest that looked something
like this:

example.com
----contoso.example.com
----whirlwind.example.com
--------fabrikam.whirlwind.example.com

You're going to have a combination of Global Catalogs (GCs) and Domain
Controllers (DCs) here. A domain controller stores data only for its
particular domain. So, the fabrikam DCs will only have data about objects in
fabrikam.whirlwind.example.com. Likewise, the contoso DCs will only have
data for objects in contoso.example.com.

Global Catalogs, are always domain controllers, in addition to their role as
a GC. So, a GC will have domain data, plus catalog data. Here's what catalog
data is - it's a partial copy of all the data in your forest. Certain
attributes for objects which will be needed when browsing across domains are
stored - email addresses are an example of this.

Does this help?

--
--
Brian Desmond
Windows Server MVP
(e-mail address removed)12.il.us

Http://www.briandesmond.com