Power Nap - Working as Advertised?

Discussion in 'OS X Mountain Lion (10.8)' started by EnigMoiD, Jul 27, 2012.

  1. macrumors member

    Joined:
    Aug 10, 2007
    #1
    Maybe I'm misinterpreting Apple's claims, but it makes sense that Power Nap would continue a time machine backup / app store download that is already in progress.

    When I close my 2012 MBA, my time machine hard drive stops blinking, so I can only imagine that the backup has stopped. Is this supposed to happen? Will Power Nap only initiate backups on a schedule? Or is this not how it's supposed to work? I installed the SMC update and checked the Power Nap box in energy saver.

    This can also become a thread about Power Nap in general since there doesn't seem to be one.
     
  2. macrumors 601

    ayeying

    Joined:
    Dec 5, 2007
    Location:
    Yay Area, CA
    #2
    I don't think it continues the back up or download but will resume or will download/back up at a scheduled time. If it's already running, it will stop and sleep since that's what you really need when putting a system to sleep in the first place.
     
  3. macrumors regular

    Joined:
    Sep 29, 2011
    #3
    Negative. My Time Machine preferences said it was scheduled to do a backup at 9:01pm. I closed the lid on my rMBP a few minutes before that and opened it up afterwards. The backup didn't happen. And yes I'm sure I have power nap enabled when plugged into a power source (which it was).
     
  4. macrumors G5

    Macman45

    Joined:
    Jul 29, 2011
    Location:
    Somewhere Back In The Long Ago
    #4
    TM backups work fine in power nap on my MBA...maybe the retina patch didn't work.
     
  5. macrumors regular

    KingArthurVI

    Joined:
    Dec 17, 2011
    Location:
    Minneapolis, MN
    #5
    Same here, I thought it would "continue to run Time Machine backups" as advertised so I left my rMBP on power adapter and started the backup, then went to bed. The next day when I wake my Mac from sleep it showed the error message "the disk was not ejected properly", so I plugged out and plugged in my external HDD again to see if it backed itself up last night and no, the latest backup was before I put my Mac to sleep.
     

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