Does CrashPlan backup while in sleep mode?

Discussion in 'OS X Mountain Lion (10.8)' started by alec6542, Dec 20, 2012.

  1. alec6542 macrumors regular

    Jan 16, 2012
    Hi guys,

    I currently own a 15 inch MBP with OS X 10.8.2. I also have CrashPlan online backup.Right now I have about 150 GB I need uploaded so obviously I want the backup to being running whenever possible. So, I have a question about whether or not CrashPlan's backup engine runs while the computer is asleep. have been told several, conflicting things. One one hand I've heard that as long as you don't close the lid, the backup engine will run even while in sleep mode, whereas if the lid is closed, the backup will not run, and thus the only way to ensure an uninterrupted backup upload is to either set Energy Saver to never sleep, or use a 3rd Party anti-sleep app such as On the other hand, I've also heard that it cannot backup while asleep, despite whether or not you leave the lid open. In fact, CrashPlan's own documentation says that the backup engine cannot run while asleep. However, lately I have been checking my backup logs in CP's desktop app, and it seems that some backing up does occur while in non-clamshell sleep. Does anyone have any knowledge on the specifics of how CrashPlan handles sleep? For example, it's possible that CP actually prevents sleep, overriding your Energy Saver preference setting, and that's why it appears to still be backing up.

    EDIT: When I refer to "sleep" above, I am referring not computer sleep, NOT display sleep, which obviously would have no impact on CP.

    Thanks for any help,

  2. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    I have Crashplan and I can tell you with certainty it does not backup when the machine is asleep. You will need to leave it awake for backups to occur.
  3. fisherking macrumors 603


    Jul 16, 2010
    ny somewhere
    as above, CP does NOT run when your mac sleeps. that's the point of sleep...

    the first backup can take weeks, easily. after that, since it's incremental, it's not so bad.

    i use CP, and have for years. every now & then, i've gone into it to find a file.
    it's great.

    i DID set mine to only back up the things i NEED backed up; ie NOT the system, the system library, etc). i only need my STUFF backed up (docs, pics, etc)

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