Why is Carbon Copy Cloner so slow?

Discussion in 'Mac Apps and Mac App Store' started by SheerGold, Feb 13, 2008.

  1. SheerGold macrumors member

    Joined:
    Apr 20, 2006
    #1
    Anyone know why?

    Is there an alternative that is faster?
     
  2. overanalyzer macrumors 6502a

    Joined:
    Sep 7, 2007
    Location:
    Boston, MA USA
    #2
  3. Eidorian macrumors Penryn

    Eidorian

    Joined:
    Mar 23, 2005
    Location:
    Indianapolis
    #3
    It takes a long time to copy many GB and thousands of files. What are you using it for?
     
  4. kfordham281 macrumors 6502

    Joined:
    Dec 4, 2007
    #4
    How much are you backing up and how long is it taking? For a benchmark, SuperDuper can copy about 80GB on my drive in a little less than two hours. That's using Firewire 400. Using USB 2.0 will DEFINITELY be slower.
     
  5. eRondeau macrumors 6502a

    eRondeau

    Joined:
    Mar 3, 2004
    Location:
    Canada's South Coast
    #5
    I have always found CCC to be very fast, especially compared to the Lacie Silverkeeper software I used to use. I admit I've never timed it, but I've done many backups over FW400 and now FW800. I'm no file system guru, but OS X is made up of about three-quarters-of-a-million files and most of them are very small. What takes the time, is not copying the data -- that's incredibly quick. What takes the time is creating a hundred-thousand little 1KB files, and directories, and keeping it all journalled, and updating Spotlight as you go. That's why incremental updates are so much faster -- because 99% of those little system files are not going to change. So basically, don't blame CCC -- blame OS X. :apple:
     

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