What Is FSMO and the 5 FSMO Roles in Active Directory

What Is FSMO

What is FSMO?

It is the abbreviation of Flexible Single Master Operations.

It is a single host operation or operation host, which is a feature of theMicrosoft Active Directory.

FSMO is not suitable for multi-master replication tasks, only suitable for single-master databases.

If you want to learn more information about FSMO, you might continue to read this post fromMiniTool.

Since Active Directory roles are not bound to a single DC, they are called FSMO roles.

Currently, in Windows, there are five FSMO roles.

Now, I will introduce the 5 FSMO roles respectively.

When DC creates a security principal object, it attaches a unique Security ID to the object.

PDC Emulator

The PDC simulator is necessary to synchronize the time in the enterprise.

Windows includes the W32Time (Windows Time) time service required by the Kerberos authentication protocol.

All Windows-based computers in the enterprise use public time.

The PDC emulator of the domain is authoritative to the domain.

If you have multiple domains in your forest, the infrastructure master is the Babelfish between them.

Schema Master

The schema master role manages the read-write copy of the Active Directory schema.

Also see:Full Fix: Active Directory Domain Services Unavailable

To provide fault tolerance, there should be multiple domain controllers available in each domain of the forest.

If the domain has a large number of domain controllers, this is not a satisfactory location.

Microsoft recommends carefully dividing FSMO roles and preparing a backup DC to take over each role.

The PDC simulator and RID host should be on the same DC, if possible.

The schema master and domain naming master should also be in the same DC.

What is FSMO?

The first section tells you the specific definition.

Then, it’s possible for you to know the 5 FSMO roles.

Read here, you may have an overall understanding of FSMO.

Hope the above information can be helpful for you.

Here comes to the end.