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Best way to keep a copy of a directory

Discussion in 'Support' started by p.f.moore, Sep 8, 2008.

  1. p.f.moore

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    I want to back up a directory to a second drive. Basically, I want to
    copy all changed files, delete any removed files, but avoid copying
    more than necessary. Essentially, the equivalent of RD /S /Q dest &
    COPY /S src dest, but without copying unchanged files. This seems like
    a common enough task, but I'm finding it hard to get the correct
    command.

    COPY /S /C src dest nearly does it, but doesn't delete any files
    removed from src.
    SYNC /S /W src dest also nearly works, but if a file in dest is
    modified, it copies it back.

    My best option so far is SYNC /S /W, and try to ensure that the
    destination files are never modified. But as this is for backup
    purposes, I'm a bit nervous. COPY /S /C isn't really useful, as if I
    use this for a relatively volatile directory (my working directory,
    for instance) the backup will grow indefinitely with stuff that I
    tried for a while then deleted.

    Have I missed any good options? (Hmm, I keep hearing good things about
    the MS ROBOCOPY utility - maybe I should look at that. Does anyone
    know if that would help me?)

    Paul.
     
  2. Jim Cook

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    I regularly use "ROBOCOPY /MIR source destination" which ensures the
    destination is now a perfect mirror of the source after the copy.

    I was using it before I got used to SYNC or COPY options that may
    serve the same purpose, so I haven't looked into those as much.


    --
    2008 Fridays: 4/4, 6/6, 8/8, 10/10, 12/12 and 5/9, 9/5, 7/11, 11/7.
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    Measure wealth by the things you have for which you would not take money.
     
  3. thomasl

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    "p.f.moore" <> wrote:

    For automatic batch-like jobs I swear by robocopy. It's versatile, small
    and rock-solid (its parentage notwithstanding).

    For interactive jobs where I need more control, I use a software called
    Synchronize It! (see http://www.grigsoft.com/ ). This is the best
    file/directory synchroniser I have found in many years of searching.

    HTH.

    --
    cheers thomasl

    web: http://thomaslauer.com/start
     
  4. p.f.moore

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    2008/9/9 thomasl <>:

    Thanks, I'll get a copy of robocopy and see how things go.
    Paul
     

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