Home > Active Directory > Step by Step FRS to DFSR Migration guide in three steps

Step by Step FRS to DFSR Migration guide in three steps

Overview

The File Replication Service (FRS) is used for replicating the contents of the SYSVOL share between Windows domain controllers.. Windows 2000 Server and Windows Server 2003 use File Replication Service (FRS) to replicate SYSVOL, whereas Windows Server 2008 uses the newer DFS Replication service when in domains that use the Windows Server 2008 domain functional level or higher, and FRS for domains that run older domain functional levels.

Let’s quickly review the perquisites and step by step migration in three steps

Prerequisites

  • Healthy Active directory services.
  • Active directory replication between domain controller must be operational.
  • The functional level of the domain to Windows Server 2008 or higher.
  •  It is preferred to do the migration on PDC Emulator as it is the authority on SYSVOL

Mainly , there are 4 Stable States of SYSVOL migration to DFSR

sTATES

let’s start the migration of SYSVOL replication from FRS to DFRS in three steps

Step I ( Migrating to the ‘PREPARED’ state )

Note:

The start state is already applied while applying the prepared state. .

Running the dfsrmig /SetGlobalState 1 command on the PDC emulator to start the migration to the Prepared state.

1

Waiting for all domain controllers to reach the Prepared state, which you can verify by running the dfsrmig /GetMigrationState command

2

Verifying that migration to the Prepared state succeeded.

3

Step II  (Migrating to the ‘REDIRECTED’ state )

 

Verifying that migration has reached the Prepared state on all domain controllers and that the domain is prepared to migrate to the Redirected state.

Running the dfsrmig /SetGlobalState 2 command on the PDC emulator to start the migration to the Redirected state.

4A
Waiting for all domain controllers to reach the Redirected state, which you can verify by running the dfsrmig /GetMigrationState command.

4

Verifying that migration to the Redirected state succeeded.

 

Step III (Migrating to the ‘‘ELIMINATED’ state ).

Verifying that migration has consistently reached the Redirected state on all domain controllers and that the domain is prepared to migrate to the Eliminated state.
You cannot reverse migration after migration reaches the Eliminated state. Therefore, you should make sure that all domain controllers have migrated to the Redirected state and that the DFS replication service can handle SYSVOL replication correctly before you begin the migration to the Eliminated state.

Running the dfsrmig /SetGlobalState 3 command on the PDC emulator to start the migration to the Eliminated state.

Elimated
Waiting for all domain controllers to reach the Eliminated state, which you can verify by running the dfsrmig /GetMigrationState command.

final 2
Verifying that migration to the Eliminated state succeeded.

Please make sure that FRS service in the domain controllers are stopped and startup is disabled

Done, migration has been completed successfully.

Additional references

Migration Guide : http://www.microsoft.com/en-us/download/details.aspx?id=4843

 

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  1. July 27, 2015 at 7:50 pm
  2. July 27, 2015 at 7:52 pm

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