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10.5: Limit size of Time Machine backups on Time Capsule
Authored by: Herve5 on May 25, '08 07:04:47AM
You can limit the size of your already existing network backup with hdiutil:
First, stop Time Machine, then open Terminal and type:
[your prompt] hdiutil resize -size [your target size in Go]g -shrinkonly
[and then drag'n drop here the .sparseimage icon, Terminal will type the path]

and then you wait, it can take a dozen of minutes via a slow wifi if your .sparsebundle is already big. When you get the prompt back, you are done.
Honestly, I think I found this very hint here on macosxhints, shortly after TM was introduced.
I've been using it happily for months to backup 3 separate machine on the same NAS without one gulping it all, while ensuring extra space on the same volume.

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