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Quasi-duplicate files being created

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    Using the Echo option from one drive's folder to another, I sometimes notice "shadow" files on the destination.

    For example, if the source file is say myname.txt, the destination folder will contain at the end of the run these 2 files:

    myname.txt

    myname.1.txt

    Sometimes the latter file is newer, sometimes older. What is causing this, and how can I prevent it?

    Wednesday, February 7, 2018 10:29 PM
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    I found out, in some older posts.

    that if there is a collision between left and right versions of the files. (Left renamed, right created the same file, different sizes and timestamps) SyncToy has a "safety feature" that keeps the files by adding a decimal just before the extention.

    Only fact i cannot figure out is why the difference between ages. My guess Synctoy would say keep the joungest file, but that is not the fact.

    I did not test by deleting the .dat file, i only tried to reproduce the issues we had between a NTFS drive and an ext4 drive.

    • Marked as answer by ronks Thursday, February 15, 2018 1:01 AM
    Thursday, February 15, 2018 12:03 AM
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    link to the older post (yes 2008!) :

    https://social.microsoft.com/Forums/en-US/691b6dbe-a3bf-445d-a68d-e69a7454a48f/after-synctoy-runs-rogue-1-files-appear?forum=synctoy

    • Marked as answer by ronks Thursday, February 15, 2018 1:01 AM
    Thursday, February 15, 2018 12:07 AM
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    Not perfectly certain I found the answer, but this may be it. I suspect the SyncToy_blahblah.dat files got corrupted at some point. I deleted all the folder pairs and recreated them fresh, and now I can run ST without any .1. files being created.
    Thursday, February 8, 2018 9:19 PM
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  • Question
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    I found out, in some older posts.

    that if there is a collision between left and right versions of the files. (Left renamed, right created the same file, different sizes and timestamps) SyncToy has a "safety feature" that keeps the files by adding a decimal just before the extention.

    Only fact i cannot figure out is why the difference between ages. My guess Synctoy would say keep the joungest file, but that is not the fact.

    I did not test by deleting the .dat file, i only tried to reproduce the issues we had between a NTFS drive and an ext4 drive.

    • Marked as answer by ronks Thursday, February 15, 2018 1:01 AM
    Thursday, February 15, 2018 12:03 AM
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    link to the older post (yes 2008!) :

    https://social.microsoft.com/Forums/en-US/691b6dbe-a3bf-445d-a68d-e69a7454a48f/after-synctoy-runs-rogue-1-files-appear?forum=synctoy

    • Marked as answer by ronks Thursday, February 15, 2018 1:01 AM
    Thursday, February 15, 2018 12:07 AM
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    I suspect that is the explanation; I had a feeling it was some kind of backup copy or the like. As I mentioned last week, my "nuke and rerun" resolved the issue (I just checked again a few minutes ago), but it is good to see the explanation.
    Thursday, February 15, 2018 1:00 AM
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