Domain Controller Global Catalog

It s very easy to check it out.

Domain controller global catalog. The first domain controller you create in active directory is a global catalog server. Domain controllers and global catalog servers are represented in dns as srv records. Because every domain controller stores the only domain directory partition in the forest configuring each domain controller as a global catalog server does not require any additional disk space usage cpu usage or replication traffic.

There must be at least one global catalog server per domain but there can be more than one. You can query srv records using nslookup by setting the type srv such as the following. The real thing you need to worry about are the fsmo roles and moving those to the newer servers.

It helps in locating an object from any domain by using its partial read only replica stored in a domain controller. The domain controller doesn t publish the dns record that it has become a global catalog server until it receives all partial domain directory partitions through ad replication. Promoting a domain controller to be a global catalog is a simple change that initiates replication of the partial attribute set for each domain in the forest other than the domain controller s domain.

A domain controller can hold the global catalog but does not have to. Now please compare these two above results the effected domain controller searching for global catalog server on 10 1 0 50 other site domain controller and working domain controller find global catalog on its own server. A global catalog is a multi domain catalog that allows for faster searching of objects without the need for a domain name.

10 1 2 3 set type srv. There are several ways to find out if a domain controller has the global catalog role enabled. Which of your domain controllers are gcs.

Nslookup default server. In a single domain forest configure all domain controllers as global catalog servers. Make sure you have an srv record named gc for your dc in the tcp.