complex copy data around 18 terabytes

Posted on 2011-03-21
Medium Priority
Last Modified: 2012-05-11
I need to copy around 18 terabytes of data from SAN storage to windows share folder the maximum I can do is 3 terabytes which is fine however the big issue is this SAN is used by mac and some of filenames don't qualify for windows is there anyway the process of copying continuo however ignored file can remain at the end of the list
Question by:mattibutt
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LVL 86

Accepted Solution

oBdA earned 1000 total points
ID: 35179115
Use robocopy; I've used it without any problems for several migrations. If you're expecting problems, just set /r (retry) and /w (wait) to something like /r:1 /w:1.
Some other hints:
- robocopy will *by* *default* only copy files that aren't in the target already.
- If you want to do several sync runs, you can use /mir to delete files in the target that aren't in the source anymore.
- use /copyall to copy NTFS permissions as well.
- Check robocopy.doc in the ResKit installation folder (to run it, you actually only need robocopy.exe), it's a very useful documentation.
- You can safely use /nfl (no file list) and /ndl (no directory list) to reduce the log file size; errors will still be logged.
- Use /np if you're logging to a text file, otherwise the log will be filled with control characters.
- Since W2k8, robocopy is already included (but without robocopy.doc).

Windows Server 2003 Resource Kit Tools

GUI wrappers are available, too:
RoboCopy GUI
LVL 11

Author Comment

ID: 35179584
so if i get this correct this tool will enable me to copy and disregard the files which names do not qualify?
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Assisted Solution

ded9 earned 1000 total points
ID: 35179910
I would recommend this software


LVL 86

Expert Comment

ID: 35187080
That's what you configure with the /r (retry) and /w (wait) arguments: how robocopy robocopy should react when it encounters files it can't copy, that is, how often it should retry the copy and how long it should wait between retries. In your case, these need to be low (default is 1000000 retries and 30 seconds pause, which would effectively stop the copy at the first file that can't be copied).
LVL 11

Author Closing Comment

ID: 35225745
thanks guys

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