syntax for how to use Robocopy to backup changed files with /m?

I want to copy 400GB from server A to server B.  I also need the syntax to copy changed files only? Do I run the same robocopy command twice (once to make the initial copy and again to copy changed files)?
victor2008Asked:
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5g6tdcv4Connect With a Mentor Commented:
robocopy "source" "destination"  /E /V /COPY:DATSO /LOG+:C:\temp\robocopy.txt /R:1 /W:2 /NFL /NDL
for initial copy

robocopy "source" "destination"  /E /V /XO /COPY:DATSO /LOG+:C:\temp\robocopy.txt /R:1 /W:2 /NFL /NDL


you could also just run:
robocopy "source" "destination"  /E /V /XO /COPY:DATSO /LOG+:C:\temp\robocopy.txt /R:1 /W:2 /NFL /NDL


it should copy files that do not exist in destination dir...stay away from /MIR
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5g6tdcv4Commented:
do your initial robocopy.
Then use robocopy /xo to exclude older
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victor2008Author Commented:
Thanks 5G.  Can you give me an example?  Or, let me know if the below is accurate?

Would I do something like:

robocopy "source" "destination" /S /E /V /COPY:DATSO/LOG+:C:\temp\robocopy.txt /R:1 /W:2 /NFL /NDL

Then (when I'm ready to do the final copy):

robocopy "source" "destination" /S /E /V /XO /COPY:DATSO/LOG+:C:\temp\robocopy.txt /R:1 /W:2 /NFL /NDL
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