Can I join a Small Business 2003 server to an existing 2000 domain?

Posted on 2004-09-21
Last Modified: 2010-04-19
We currently have a 2000 domain controller with two 2003 member servers. I want to know if we can make a 2003 Small Business server our domain controller and demote the 2000 domain controller and everything work smoothly.  
Question by:pcspcs
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LVL 57

Expert Comment

by:Pete Long
ID: 12113106
No if you are using SBS   the SBS server MUST be the only domain controller and it MUST have all the FSMO roles

Author Comment

ID: 12113171
Please define FSMO roles
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Expert Comment

by:Pete Long
ID: 12114286
There are 5 FSMO roles which are

·      Schema master - Forest-wide and one per forest.
·      Domain naming master - Forest-wide and one per forest.
·      RID master - Domain-specific and one for each domain.
·      PDC - PDC Emulator is domain-specific and one for each domain.
·      Infrastructure master - Domain-specific and one for each domain.
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Author Comment

ID: 12114887
What does FSMO stand for?
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Expert Comment

by:Pete Long
ID: 12114922
Flexible Single Master of Operations
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Accepted Solution

Pete Long earned 500 total points
ID: 12114943
For most active directory operations, Windows 2003 uses the multiple master model.  The benefit is you can add a computer, or change a user's password on any domain controller.  For example, if you have three domain controllers, you can physically create a new computer in the NTDS.dit database on any of the three.  Five minutes later, the new computer object will be replicated to the other two domain controllers.

Technically, the multiple master model uses a change notification mechanism.  Occasionally problems arise with duplicate operations, and as a result orphaned objects appear in the 'LostAndFound' folder.  The point of FSMO is that a few operations are deemed so critical that only one domain controller can carry out that process.  Emulating a PDC is the most famous example of such a Single Master Operation; creating a new child domain would be another example.

In FSMO, the Flexible word simply means that you can move the role to a more suitable domain controller.  

The five FSMO roles are:
PDC Emulator - For NT 4.0 BDC's.  But also for synchronizing time and creating group policies.
RID Master - Each object must have a globally unique number.  The RID master makes sure each domain controller issues unique numbers when you create objects like users.
Infrastructure Master - Responsible for checking Universal group membership in multiple domain forests.
Domain Naming Master - Ensures that each child domain has a unique name.
Schema Master - Operations that involve expanding user properties e.g. Exchange 2000 adds the mailbox property to users.
Three of the FSMO roles (1-3) are held in each domain, whilst two (4-5) are unique to the entire forest.

Author Comment

ID: 12115008
Thanks for the details.
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Expert Comment

by:Pete Long
ID: 12115240

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