Does OS X Lion automatically backup my MBP?

Discussion in 'Mac OS X Lion (10.7)' started by Hook'Em2006, Aug 2, 2011.

  1. macrumors 6502

    Joined:
    Sep 9, 2009
    Location:
    Plano, TX
    #1
    Does this new OS automatically backup my computer everyday? When I look at iStat, it shows a backup hard drive. I don't have it connected so I don't know what it is. It is really confusing me.
     
  2. thread starter macrumors 6502

    Joined:
    Sep 9, 2009
    Location:
    Plano, TX
  3. macrumors 65816

    Gemütlichkeit

    Joined:
    Nov 17, 2010
  4. macrumors 68000

    paulsalter

    Joined:
    Aug 10, 2008
    Location:
    UK
    #4
    not sure what the backup drive is

    got to the apple menu and select about this mac, then click more info
    click on the little button that says storage

    time machine (for portables, not sure if all of them do it) creates a backup here, similar to having an external time machine connected

    not to good if you drive dies though, external backup much better
     
  5. macrumors regular

    Joined:
    Jul 15, 2008
    #5
    Time Machine in Lion now does something called 'local snapshots' on portable machines. In the absence of a mounted Time Machine volume, it makes a temporary backup file on your hard drive which later gets copied back to your Time Machine drive when it is mounted next. I imagine the purpose of this is to keep the Time Machine backup timeline intact even when you are not constantly connected to a backup drive.

    Do a search for 'local snapshots for more information.
     
  6. macrumors 68030

    Joined:
    Sep 7, 2006
    #6
    That's like "versions" in Windows...which is honestly sort of a hard concept for me to wrap my head around LOL (like how the heck is the OS keeping 20 revisions of this file while seemingly using no space!)

    But anyway, that's not a backup. You'll want to buy an external hard drive to use Time Machine to do regular backups.
     
  7. macrumors 68030

    Joined:
    Feb 26, 2011
    Location:
    Cincinnati, OH
    #7
    Local snapshots are only enabled with TM is on, and a couple of other criteria:
    1. you have a notebook system
    2. you have a traditional time machine destination selected
    3. you have automatic backups enabled (the big switch in the Time Machine preference pane is on)
    We don't know if the OP has TM running or not. Nor do we know what iStat is really reporting.
     
  8. thread starter macrumors 6502

    Joined:
    Sep 9, 2009
    Location:
    Plano, TX
    #8
    I have TimeMachine enabled. I also have a portable harddrive i use for time machine. But I don't know what "mobile backups" are.
     

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  9. macrumors 68030

    Joined:
    Feb 26, 2011
    Location:
    Cincinnati, OH
    #9
    They are local snapshots. TM makes backups while your TM disk is not available. You can disable in terminal with sudo tmutil disablelocal , it takes a couple of minutes to delete.
     

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