Time Machine is taking so long to backup!

Discussion in 'Mac OS X Lion (10.7)' started by petrucci666, Sep 14, 2011.

  1. macrumors 6502a

    Apr 30, 2009
    San Francisco, CA
    2011 13" MBA here with 128GB of space. The actual backup file is about 75GB and I initiated the backup an hour ago. It has only backed up 12GB so far.

    The backup disk is a 1TB WD My Passport if that matters.

    It is being painfully slow and I don't know why!

    Any thoughts?
  2. macrumors newbie

    Sep 6, 2011
    Just by what I went through this morning, that is fast. My 2011 MBP took well over three hours to backup 5GB.
  3. Moderator


    Staff Member

    Sep 8, 2010
    Detroit, Michigan
    Wirelessly posted (iPhone 3GS: Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_5 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8L1 Safari/6533.18.5)

    Is this the first time you've used this HDD to run backup? Usually the first time takes a while. After that it will normally take only a few minutes depending on how much data has changed between backups.
  4. macrumors 6502a

    Sep 3, 2010
  5. macrumors newbie

    Sep 6, 2011
    It was my first time, so I can see why mine took long.
  6. macrumors 65816


    Dec 17, 2007
    Syracuse, NY
    The initial backup should be done via ethernet. It will take a couple of hours and then you can switch to wi-fi for subsequent backups.
  7. macrumors 6502

    May 21, 2011
    Just backed up 75GB last night and it took about 3 hours.

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