Time Machine Compressing Files???

Discussion in 'Mac Apps and Mac App Store' started by motomike27, Mar 30, 2009.

  1. motomike27 macrumors newbie

    Joined:
    Mar 11, 2008
    #1
    I'm using Time Machine (for the first time) to back up my system (Mac Pro w/750Gb internal drive and a firewire 750Gb external backup). However, when looking at the contents of my external backup drive after Time Machine has finished, I notice there is sizeable difference between the amount of data on my internal and external drives.

    To confuse matters more, I repeated the backup 3 separate times on the same internal volume (357Gb worth of data) and each time Time Machine yielded a different size backup; ranging from 343Gb to 350Gb. Each time I have "erased" the external drive using Disk Utility prior to running Time Machine.

    After digging around I found at least some of the difference lies within the Movies_IDVD Projects folder. I have only a few projects but it appears that Time Machine randomly chose a few of the larger ones to compress?? Either that or it did not back them up all the way. These files were roughly 2-4Gb in size on my internal and only 200kb on the backup drive.


    Are there other files that Time Machine is either compressing or not backing up? Should I use Time Machine at all or should I copy the files I want backed up by dragging them to the external? I would like to be able to restore my system to its current state one day if/when my intenal drive craps out (including all of my apps, etc.).

    Thanks for your help.
     
  2. Jethryn Freyman macrumors 68020

    Jethryn Freyman

    Joined:
    Aug 9, 2007
    Location:
    Australia
    #2
    Probably something isn't being backed up. Time Machine doesn't compress anything.
     

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