Since the "Bandwidth Savings Using DFS Replication" is reflected in the DFS Replication health report as "DFS Replication Efficiency Savings." This shows up in two locations in the health report - at the top as a cumulative savings for the entire replication group, and in the Informational section for each member. The savings for the entire replication group will not be reset until the DFSR service is reset on all the members. The savings for an individual member will be reset by just resetting the DFSR service on that specific member.
Also, the following WMI classes are available in the \root\CIMV2 namespace to access the DFSR performance counter data.
Note Run wmiadap /f to register these classes if you determine they are not available on the server. For example if the WMIC commands below return "invalid class" or "not found"
PerFormattedData classes are "cooked" data classes that output more intuitive data than the PerfRawData classes.
http://msdn.microsoft.com/library/en-us/wmisdk/wmi/wmi_performance_counter_types.asp
WMIC provides an easy way to access the performance data from a command line. It is available in Windows XP, Windows Server 2003, and later versions of Windows. Commands to view the data remotely (using /node:<server>) can be run from Windows XP or a Windows Server 2003 computer that does not have DFSR installed. However the target computer must have DFSR installed and the DFSR service running. The /format:textvaluelist switch is not needed but makes for a more readable list. The /format: switch also takes csv, hform, htable-sortby, htable, mof, xml, rawxml, texttable, and texttablewsys as arguments.
To view the data from Win32_PerfFormattedData_Dfsr_DFSReplicatedFolders for all replicated folders on the server:
wmic path win32_perfformatteddata_dfsr_dfsreplicatedfolders get /format:textvaluelist
To view a single property from Win32_PerfFormattedData_Dfsr_DFSReplicatedFolders for replicated folders on the server:
wmic path win32_perfformatteddata_dfsr_dfsreplicatedfolders get fileinstallsretried /format:textvaluelist
To view the data from Win32_PerfFormattedData_Dfsr_DFSReplicatedFolders for all replicated folders on remote server SRV02:
wmic /node:srv02 path win32_perfformatteddata_dfsr_dfsreplicatedfolders get /format:textvaluelist
To view the data from Win32_PerfFormattedData_Dfsr_DFSReplicatedFolders for a single replicated folder:
wmic path win32_perfformatteddata_dfsr_dfsreplicatedfolders where name="dfsrtest-{09B41446-7175-49E4-88ED-0B2D9B61F884}" get /format:textvaluelist
The Scriptomatic 2.0 provides a simple way to create sample scripts.