Mastering Active Directory

Globally unique identifier and security identifier

In a city or organization, there can be multiple people with the same name. But their passport number or national insurance number will be unique to them. So, in order to identify a person or thing accurately from a similar group, we need to consider the unique value associated.

In the Active Directory database, nearly 2 billion objects can be stored. How will it uniquely identify each and every object? Every time we create an object in Active Directory, it will be assigned with one or two unique values. If it is a user or group object, it will receive a globally unique identifier (GUID) and security identifier (SID). The GUID value will be saved in the objectGUID attribute in each object ...