If you only have one domain in your forest, nothing will be wrong. If you do however have multiple domains in you forest, and you put your GC and infrastructure master on the same machine, things can go horribly wrong. This is because GC and Infrastructure Master use the same NTDS.dit file, changes will be changed by GC and Infrastructure Master checks the NTDS.dit and doesn't see any change, because GC already changed the NTDS.dit Only way you can run GC and infrastructure Master on the same machine in a multiple domain forest is to enable GC on all domain controllers... greets
1 Domain Naming Master, 1 Schema Master, 1 PDC Emulator, 1 Infrastructure Master, 1 RID Master
In a Windows Server 2008 domain, there are five Flexible Single Master Operations (FSMO) roles. These roles are Schema Master, Domain Naming Master, PDC Emulator, Relative ID (RID) Master, and Infrastructure Master. Each role has a specific purpose in the Active Directory environment to ensure proper replication and management of directory data.
A Forest Wide FSMO (Flexible Single Master Operation) role is a specific function in Active Directory that is responsible for certain critical tasks across the entire forest, as opposed to being limited to a single domain. There are five FSMO roles in total, with the Forest Wide roles being the Schema Master and the Domain Naming Master. The Schema Master manages changes to the Active Directory schema, while the Domain Naming Master oversees the addition and removal of domains within the forest. These roles are essential for maintaining the integrity and structure of the Active Directory environment.
Domain Naming Master
Domain Naming Master, pg 87 in your ITT server 2008 R2 handbook, Mr. ITT student.
Flexible Single Master Operations servers. They are servers that every Active Directory needs that serve a single purpose. Here are the FSMO servers: Schema Master Domain Naming Master Infrastructure Master Relative ID Master PDC Emulator Those are the five FSMO server rolls that get assigned to 1 or more domain controllers in each domain. Schema and Domain Naming Master will have only 1 server per AD Forest.
Only one Schema Master are user in Forest
Domain Naming Master
The main zone types used in Windows Server 2003 DNS environments are primary zones and Active Directory-integrated zones. Both primary zones and secondary zones are standard DNS zones that use zone files. The main difference between primary zones and secondary zones is that primary zones can be updated. Secondary zones contain read-only copies of zone data.An Active Directory-integrated zone can be defined as an improved version of a primary DNS zone because it can use multi-master replication and the security features of Active Directory. The zone data of Active Directory-integrated zones are stored in Active Directory.Active Directory-integrated zones are authoritative primary zones.A few advantages that Active Directory-integrated zone implementations have over standard primary zone implementations are:Active Directory replication is faster, which means that the time needed to transfer zone data between zones is far less.The Active Directory replication topology is used for Active Directory replication, and for Active Directory-integrated zone replication. There is no longer a need for DNS replication when DNS and Active Directory are integrated.Active Directory-integrated zones can enjoy the security features of Active Directory.The need to manage your Active Directory domains and DNS namespaces as separate entities is eliminated. This in turn reduces administrative overhead.When DNS and Active Directory are integrated; the Active Directory-integrated zones are replicated, and stored on any new domain controllers automatically. Synchronization takes place automatically when new domain controllers are deployed
Single-master replication can make it difficult for administrators to manage Active Directory objects, especially if they are located in remote offices and must work over a slow wide area network (WAN) link. To address this problem, Active Directory uses multiple-master replication, in which it is possible to make changes to domain objects on any domain controller, which replicates those changes to all of the other domain controllers.
Infrastructure Master & RID which consists unique ID to SID of all objects in a directory for all domain's in a forest.
Primary zone: This is the only zone type that can be edited or updated because the data in the zone is the original source of the data for all domains in the zone. Updates made to the primary zone are made by the DNS server that is authoritative for the specific primary zone. You can also back up data from a primary zone to a secondary zone.Secondary zone: A secondary zone is a read-only copy of the zone that was copied from the master server during zone transfer.Active Directory-integrated zone: An Active Directory-integrated zone is a zone that stores its zone data in Active Directory. DNS zone files are not needed. This type of zone is an authoritative primary zone. Zone data of an Active Directory-integrated zone is replicated during the Active Directory replication process. Active Directory-integrated zones also enjoy the security features of Active Directory.Stub zone: A stub zone is a new Windows Server 2003 feature. Stub zones only contain those resource records necessary to identify the authoritative DNS servers for the master zone.as well underscore zone _msdcs