I search the internet high and low and find no questions on why this is not operational or working in Server 2012.
Was multi-threading not a useful feature? Figured I might as well start a thread to hopefully get insight for others that may ask that same question now and in the future.
Robocopy
/MT[:N]
Creates multi-threaded copies with N threads. N must be an integer between 1 and 128. The default value forN is 8.
The /MT parameter cannot be used with the /IPG and/EFSRAW parameters.
Redirect output using /LOG option for better performance.
Note
The /MT parameter applies to Windows Server 2008 R2and Windows 7.