Robocopy file share migration with full at first and then only changes

Hello EE,

We are migrating our file server and need to maintain shares and permissions.  The first I am looking at doing a full copy to see how long it takes with retaining all time stamps, permissions and shares:

robocopy "\\server\share" \\server\share /zb /MT /mir /copyall /dcopy:T /V /tee /LOG+:C:\robocopy\log.txt /r:3 /w:240

It's been a while since I've used this so want to make sure if I am missing anything.
I would then like to migrate only changes, but am not clear how to edit the above.  Any input would be great.
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NVITEnd-user supportCommented:
You would keep using the /MIR switch, which covers changes, i.e. new files, changed files, deleted files.
What you have should be fine. I would change the /LOG to a different filename so I could compare later

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Shaun VermaakTechnical SpecialistCommented:
I would add /XO otherwise it will overwrite changed files in target and not use /MIR because it adds deletions which is not a good idea during migrations
NVITEnd-user supportCommented:
@ Shaun,

I would then like to migrate only changes,
I may be wrong but I presumed the author considers the source as authoritative, that's why I said to use /MIR.
Shaun VermaakTechnical SpecialistCommented:
My comment wasn't a response to your recommendation to use /MIR, rather a comment to the /MIR in the question ;)

I am not trying to discredit you, just saying that I would not use it because of past experiences
NVITEnd-user supportCommented:
Solution given.
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