Langkah penting berikutnya yaitu membuat DC yang baru sebagai sebuah Global Catalog (GC) Server.

The Global Catalog (GC) contains a searchable, partial representation of every object in every domain in a multi-domain Active Directory forest. GC servers are mainly used for forest-wise (global) searches and, in multi-domain forests, GCs resolve user principal name (UPN) logon names and determine group membership during logon. Recommended design practices dictate that there should be at least one Global Catalog server at each site, unless those sites have maximum availability connections or utilise universal group caching. By default, in a multi-domain forest, failure to access a GC (and check group membership) results in an unsuccessful logon.

Untuk mengkonfigurasi GC menggunakan UI (DSSITE.MSC), lakukan langkah-langkah berikut:

• Bukalah Active Directory Sites and Services Snap-In (dssite.msc)
• Navigate to the NTDS Settings object of the server you wish to configure, and right-click on the Server Name and choose properties (figure 1). Arahkan ke NTDS Setting objek dari server yang Anda ingin konfigurasi, dan hak-klik pada Nama server dan memilih properti (gambar 1).


Figure 1. Selecting the servers NTDS Settings properties



• Dalam kotak dialog properti, pilih tab General, kemudian pilih/centang check box “Global Catalog” untuk membuat Domain Controller ini sebagai server Global Catalog (gambar 2).

Figure 2 . The Global Catalog option in the Domain Controllers NTDS Settings Properties dialog

• Klik OK dan tunggu sekitar 5 menit.