03Exchange Server 2010 Cross-Site Deployment-Introduction to GC Domain controllers

3.3about theGcIntroduction to Domain controllers

By the Way, the two current domain controllers are GC, how to look at a domain controller is not a GCand can be viewed as follows

3.3.1viewing in Active Directory Sites and Services

Right-click on "NTDS Setting"

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you can see a √ in front of the global catalog, which indicates that this domain controller is a GC, and that this method is not entirely true if the architecture in the company is a Tanlindo domain environment. Here's a look at the second way to view the GC

3.3.2 DNSView in ManagerGc

Open DNS Manager, navigate to the following location

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This is one of the most complete and professional viewing methods, showing 3 SRV records that show that three domain controllers in the current domain are GC, but the GCin the entire forest is shown here . So finding a GC from here is the most complete approach, and it collects the SRV records for all the GC in the entire forest .

by the way, explain what is GC,GC is a special domain controller, Chinese translation is a global catalog server. At least one GC is ensured in a domain environment , and when the first domain controller was created, we saw that the global catalog was in a gray tick state. Also, each site also to ensure that there is a GC, the site is a physical level of meaning, the general company in different places have branch offices. So what is a GC for? We can open an Active Directory search interface

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Here's our idea under the dropdown box, "The entire directory“,"Robin.com"and the"SH",The entire directory is the search for the results I want to find from the entire forest,Robin.comis to find results from a domain controller in my current domain environment, andShThe result is found on the domain controller of the Shanghai branch. If you select an entire directory to find, that is, from theGcwent up and searched, and choseRobin.comis from the current domain.DCgo up and search. The specific explanation is that a singleDCit collects various object information for the current domain environment, andGcnot only collectGcinformation about the domain, and also collects some information about all objects in the entire forest, note that it is part of the information. Because the domain controller has aAddbdatabase file, Microsoft's capacity for this database is limited and should be10G, if a forest hasNdomain, all the information collected is likely to exceed this capacity limit, soGconly part of the information for all objects is collected. Specifically if I'm looking for information onGcWhat if I can't find it? We can use the following methods to add the information we need to findGcthe information collected.

Register Dchmmgmt.dll

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Open MMC Management Console, adding Active Directory schemas

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Here you can see a lot of properties, casually open a view property, you can see a line below "Copy this property to the global catalog ", and there is no check, which indicates that this property is not collected by GC , So if we're going to search for this object's properties and we can't find it, we'll have to do a tick to get the GC to collect it.

Okay, This is described in the GC.

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This article from "Robin's Home" blog, declined reprint!

03Exchange Server 2010 Cross-Site Deployment-Introduction to GC Domain controllers