How to rebuild the SYSVOL tree and its content in a domain
The article describes how to use the Burflags registry entry to rebuild each domain controller's copy of the system volume (SYSVOL) tree on all domain controllers in a common Active Directory directory service domain.

How To Use File Replication Service File and Folder Filters in Windows 2000
FRS can also replicate content between Windows 2000-based servers that host the same fault-tolerant distributed file system (Dfs) roots or child node replicas.

See "Best Practices for Sysvol Maintenance" from Microsoft Help and Support.
File system junctions are used extensively in the Sysvol structure and are a feature of NTFS file system 3.0. You must be aware of the existence of junction points and how they operate so that you can avoid data loss or corruption that may occur if you modify the Sysvol structure.

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Win Server 2008 Directory Services, SYSVOL DFS Replication
The term Active Directory is most commonly equated with the NTDS.DIT database and its characteristics; however, its functionality is affected in a profound manner by content of the SYSVOL folder, residing by default, directly under the Windows directory (although its placement is customizable) and providing file system storage required to implement a wide range of Group Policies.