Time capsule backup sizes: Always large on MBA but tiny on desktop

Discussion in 'Mac Accessories' started by BenTrovato, May 15, 2014.

  1. BenTrovato macrumors 68030

    BenTrovato

    Joined:
    Jun 29, 2012
    Location:
    Canada
    #1
    Hey guys,

    Just wondering if anyone has any insight on why this happens. Anytime I backup up my MBA after a day or two of no backups, the size is always between 5-6gb even if I didn't turn on the laptop in those days. Conversely, the desktop backup sizes are always between 4-500mb, even if I don't turn it on for a week.

    Both systems are backing up 128gb SSD's with pretty much the same software on both so I don't understand what's going on. Sometimes all I do is turn it on and surf the internet or reply to emails and the backup is over 5gb on the laptop. If I do the same activity on the desktop, it's much smaller. Any ideas?
     
  2. priitv8 macrumors 68030

    Joined:
    Jan 13, 2011
    Location:
    Estonia
    #2
    Maybe some of the hints here help to pinpoint what exactly is backed up in both cases?
    http://pondini.org/TM/D4.html
    PS Does your laptop powernap? Does it keep local backups?
     
  3. BenTrovato thread starter macrumors 68030

    BenTrovato

    Joined:
    Jun 29, 2012
    Location:
    Canada
    #3
    It doesn't powernap. I'm going to go ahead and say yes to local backup. I thought Time Machine takes local backups as long as there is more than 20% free space on the main drive?
     
  4. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #4
    Even local backups would not explain that with the usage (non-usage) you described. All that goes in there is things you have deleted. So for example if you downloaded a 2GB video then deleted it, that would go into local backups.
     
  5. priitv8 macrumors 68030

    Joined:
    Jan 13, 2011
    Location:
    Estonia
    #5
    That's why I keep my Downloads folder excluded from TM backups.
     
  6. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #6
    I'm not talking about actually backing up the deleted video, what I mean is anything you delete goes into the hidden local backups folder (/.MobileBackups), even if the folder is excluded from TM backups.
     
  7. priitv8 macrumors 68030

    Joined:
    Jan 13, 2011
    Location:
    Estonia
    #7
    Actually, this logic remains obscure to me! The idea of excluding folders from backup set is to keep them excluded also from local backup (/.MobileBackups), right?
     
  8. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #8
    One would think so yes... but that is not how it works for some reason. You can test it yourself and you will see. Anything you delete gets put in /.MobileBackups even if the folder is excluded in the TM settings. Lame I agree.
     
  9. priitv8 macrumors 68030

    Joined:
    Jan 13, 2011
    Location:
    Estonia
    #9
    I don't see my ~/Downloads being backed up into MobileBackups:
    Code:
    Priits-MacBook-Pro-2:~ priit$ ls -ld /Volumes/MobileBackups/Backups.backupdb/Priit’s\ MacBook\ Pro/Latest/Macintosh\ SSD/Users/priit/D*
    drwxr-xr-x   9 priit  staff   306  9 mai   22:54 /Volumes/MobileBackups/Backups.backupdb/Priit’s MacBook Pro/Latest/Macintosh SSD/Users/priit/Desktop
    drwxr-xr-x  36 priit  staff  1224  4 nov    2013 /Volumes/MobileBackups/Backups.backupdb/Priit’s MacBook Pro/Latest/Macintosh SSD/Users/priit/Developer
    drwxr-xr-x  97 priit  staff  3298  8 apr   18:55 /Volumes/MobileBackups/Backups.backupdb/Priit’s MacBook Pro/Latest/Macintosh SSD/Users/priit/Documents
    
     
  10. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #10
    You are correct and I was wrong. I have ~/Desktop excluded and I would swear when I checked this it was dumping things into Mobielbackups. I just checked again and it does not. Sorry for the confusion.
     

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