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Use robocopy to copy only data that has changed since yesterday

Posted on 2008-10-08
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Last Modified: 2010-04-21
Hi Experts.  I am doing a file server migration and did a massive copy job yesterday using robocopy.  Since the copy took so long, I wasn't able to break the share that we are migrating so now I need to copy only the data that changed since yesterday's copy job.  How can I do this?  Thanks for your help!  
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Question by:samiam41
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Expert Comment

by:tenaj-207
ID: 22674555
You have two options.  One you can use the /XO option (eXclude Older), which is would I'd use.  Your second option is to use /MIR which is to mirror the destination with the source.
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by:samiam41
ID: 22674572
Essentiall something like this?
robocopy \\server\share \\nas\share /XO

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tenaj-207 earned 2000 total points
ID: 22674600
I also like to specify everything (e) the retry (r) the verbose level (v) and a out put log.  So it'd look like this.  That means it'd copy everything except if it has an older or THE SAME date, only retry once (the default is some ridiculously high number) and wait time between retrys is 3 sec and the verbosity is set to high.  Lastly I can review the log to confirm that it got everything.


robocopy \\server\share \\nas\share /E /XO /R:1 /W:3 /V /log:c:\output.txt

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by:samiam41
ID: 22674615
Ahhh.......  That makes much better sense.  I like that.  Alright, I have what I need.  Thanks for your help!
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Author Closing Comment

by:samiam41
ID: 31504499
Great work!  I will be putting that into place once I am done here.  Take care!

Regards,
Aaron
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