Can a file change size when the transfer protocol changes?

Posted by djechelon on Super User See other posts from Super User or by djechelon
Published on 2011-11-20T00:55:30Z Indexed on 2011/11/20 1:58 UTC
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windows-7

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sync

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SMB

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syncback

I am very curious about what I have just found happening on my computers.

I have set up SyncBackPro to synchronize a music folder from my home desktop to my laptop using Windows network share (SMB). Files get synchronized regularly.

Now I tried to switch to FTP and I noticed that NO FILE matches its counterpart even if they have never been modified (I make sure there is the readonly flag and no application is allowed to retag MP3s and whatever...), so SyncBack asks me what side should overwrite the other. FTP files are a little larger than local files.

I run synchronization from the laptop.

How can such a thing happen? Files are the same, bytes should be the same... If I run SMB sync again it matches all the files again.

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