http://technet.microsoft.com/en-us/library/cc732490.aspx
Needs the Maintain Objects List global flag set AND A RESTART to track local file handles in Server 2008R2, and is turned off by default to reduce overhead, although I have never seen documented how much overhead it may generate.
However in Server 2012 the command generates a strange message on checking the status.
Server 2008 R2
Server 2012
I suspect the flag is pre-set to ON in Server 2012, and the reason it is on by default is that the new Server 2012 Powershell cmdlet Get-SmbOpenFile requires the same code under the covers and MS wanted it to work straight out of the box. If that is the case it does make you wonder how much overhead is really involved by setting it on… If anyone knows any more about this behaviour please comment.
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