Using SyncToy to Syncronize Three Drives


  1. Napavalley
    Posts : 2
    Windows 7 Home Premium 32 bit
       New #1

    Using SyncToy to Syncronize Three Drives


    I have one primary drive (A) and two backup drives (B and C). I'm using SyncToy 2.1 to sync A and B. I would now like to sync A and C so when I finish all 3 drives are identical.

    I have a folder pair set up for the A and B backup. If I set up a second folder pair for the A and C backup and run it, will that cause the backup history data for the A and B sync to be invalid for the next A and B run? If so, any suggestions for accomplishing what I want to do?

    Thanks for your help

    Jerry
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  3. samuria
    Posts : 3,786
    win 8 32 bit
       New #2

    Welcome to the forum. The best tool for this is the built-in tool robocopy which you can run by typing robocopy at CMD prompt you can also download a GUI you simply set it to mirror the folders it's very fast and was built for servers it won't effect history
    Last edited by Barman58; 19 Sep 2016 at 15:24. Reason: Add a y to robocop ;)
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  4. Napavalley
    Posts : 2
    Windows 7 Home Premium 32 bit
    Thread Starter
       New #3

    Thank you Samuria. I think that will solve my problem.

    I've installed the GUI, and have some questions I hope you could answer.

    I will be backing up one folder named DATA. This folder already exists on all three drives, and has several sub-folders, and sub-folders within those, etc. Very nested.

    I want the process to delete folders and files on the target that have been deleted from the source, and I want to copy empty folders from source to the target if they exist.

    What choices would you recommend I set in the Copy Options for the above specs? or would /MIR option by itself do what I want?

    Also, if I use RoboCopy with Win 10, is there anything I need to be aware of?

    Jerry
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  6. ignatzatsonic
    Posts : 12,012
    Windows 7 Home Premium SP1, 64-bit
       New #4

    Napavalley said:
    If I set up a second folder pair for the A and C backup and run it, will that cause the backup history data for the A and B sync to be invalid for the next A and B run? If so, any suggestions for accomplishing what I want to do?
    Regarding your first question: I seriously doubt it. I haven't used Synctoy in some time, but all the backup apps I've used would consider the A to B backup to be independent of the A to C backup. I'm assuming I understand your question correctly.

    Re Robocopy: it's a good tool, but beware: it is very powerful. If you don't understand it correctly, it can have very undesirable consequences.
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