USAGE: Dfsutil /RootScalability is an expert-only option to increase performance of large deployments of DFS namespaces. ...

USAGE:
Dfsutil /RootScalability is an expert-only option to increase performance of large deployments
of DFS namespaces. When set, network traffic among namespace servers is kept to a 
minimum. In addition, there will be less traffic between the primary domain controller
and DFS servers. The drawback is that users may see outdated information from DFS
servers at times.
  
Usage: 
dfsutil /RootScalability /Root: /Enable|Disable|Display [/Verbose]

    /Root: - Path of DFS Root affected.
    /Display - Determine whether the root-scalability feature is currently enabled.
    /Enable - Enable root-scalability.
    /Disable - (Default behavior) Tighter synchronization between DFS servers 
                     and domain controllers.
    /Verbose - Show additional information while the tool is executing.    

Notes:
1) One of Enable, Disable, Display must be specified.
2) The path specified must be a root, not a link.
3) This has no effect on stand-alone roots.
4) When RootScalability is enabled, it is not uncommon to see an event log message such as,
"DFS could not access its private data from the DS...". While this error may still indicate 
a problem in AD DS connectivity, typically this occurs because the nearest domain controller has
outdated DFS information (expected behavior when RootScalability is enabled).

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