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| Add a global catalog server for redundancy |
| A global catalog (GC) server essentially functions as a key database for Active Directory (AD) and |
| is the mechanism through which AD searches are accomplished. The GC contains a full writable |
| replica of all objects in the AD for its host domain and a partial read-only replica of the forest's |
| By default, the first domain controller (DC) in a forest is the only one that functions as a GC. |
| Adding further GCs is particularly important to provide availability and redundancy for |
| authentication in the domain. For example, if you have divisions that share a domain structure but |
| are separated by network segments that are susceptible to disconnection, you should add a local GC |
| at every location to prevent logon problems. |
| Follow these steps to add a GC server to a domain: |
| If you don't have a DC installed at the remote location, install Windows 2000 Server and promote it |
| Open the Active Directory Sites And Services console, expand the site to locate the DC in the |
| Servers node, and expand the server's branch. |
| Right-click NTDS Settings and choose Properties. |
| Select Global Catalog and click OK. |
| Close the console and repeat the process to add GCs at the other locations. |
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