# Domain Controller AD Partitions

#### Active Directory Partitions

[![image.png](https://note.human-bean.net/uploads/images/gallery/2026-07/scaled-1680-/fZyimage.png)](https://note.human-bean.net/uploads/images/gallery/2026-07/fZyimage.png)

#### Global Catalog Server

- Not all Domain Controllers must be Global Catalog Servers
- All Global Catalogue Servers must be Domain Controllers
- Ideally have a GCS in every site D.C but adds replication load

Configured in Active Directory Sites and Services > Services > DC > NTDS Settings > Properties > Tick "Global Catalog"