CCC backup smaller than it should be?

sine-nomine

macrumors regular
Original poster
Jul 25, 2007
222
1
Finer stores everywhere.
I've been using CCC for years, but somehow I've only just now noticed that Get Info shows all three of my backups are about 780GB, while my backed-up hard drive is about 920GB. In all cases, "Backup Everything" was selected in the drop-down menu. Maybe I'm missing the obvious, but what's causing the discrepancy in these sizes? Thanks!
 

maflynn

Moderator
Staff member
May 3, 2009
63,863
30,386
Boston
Maybe CCC is ignoring the cache folders, swap files, and other temporary type files/objects.
 

musique

macrumors regular
Apr 10, 2009
222
5
You might ask assistance from Bombich (the company that produces CCC). I’ve found them to respond quickly and to be helpful whenever I’ve had questions. Good luck.
 

Fishrrman

macrumors P6
Feb 20, 2009
17,216
5,558
Have you tried booting from one of your CCC backups, and then "taking a look around" to assure yourself that "everything is there" ... ???
 

maflynn

Moderator
Staff member
May 3, 2009
63,863
30,386
Boston
Its probably the difference in how OS X computes a gigabyte and how the application does. If you remember, apple changed what constituted a gigabyte a couple of versions ago
1 GB = 1000000000 bytes vs 1 GiB = 1073741824 bytes
 

Weaselboy

Moderator
Staff member
Jan 23, 2005
29,180
8,833
California
That's my hope, but I'm surprised at suck a massive difference in size! (Btw, Time Machine has been disabled for months, so local backups shouldn't still be there, right?)
They should not, but sometimes they get stuck. Run the command below in Terminal to see if there is anything hanging around from TM local snapshots.

CCC does not copy caches and swap etc., but I can't see that accounting for the large difference you are noticing.

Code:
sudo du -hs /.MobileBackups
 

MacInMotion

macrumors newbie
Feb 24, 2008
28
0