Note This article also applies to the following products:
Microsoft Windows Server 2008 Datacenter x64
Microsoft Windows Server 2008 Enterprise Edition x64
Microsoft Windows Server 2008 Standard Edition x64
Microsoft Windows Server 2008 R2 Datacenter x64
Microsoft Windows Server 2008 R2 Enterprise Edition x64
Microsoft Windows Server 2008 R2 Standard Edition
Distributed File System (DFS) replication is a new technology that has been included in Microsoft Windows Server starting in Microsoft Windows Server 2003 R2. Some Microsoft TechNet articles discuss the concept of prestaging to reduce network traffic during the initial synchronization of DFS data. Whether data that is located on each replication partner is considered the same depends on the hashing algorithm that is applied to the file, to the file permissions (discretionary access control lists), and to the file audit properties (system access control lists).
The hashes of prestaged data are affected by the following:
The copy tool, such as Robocopy.exe or Xcopy.exe, that is used
Because the possible combinations of these factors are so wide and varied, predicting the success of prestaging operations is very difficult. However, the Backup program in Windows Server is a reliable mechanism to prestage data.
This article discusses how to use the Backup program to prestage data. This article includes a method that you can use to verify prestaged data before the initial DFS replication (DFSR) synchronization.
How to use the Backup program to prestage DFSR data
Back up the data by using the Backup program. You can back up to tape or to a file.
Transfer the backup to the destination server.
Restore the backup to the destination server. The hashes that are computed by DFSR for each server should be identical for files that have not changed.
How to verify DFSR hashes before the initial synchronization