Time Machine will standard use all the available disk space on an external drive or a external server volume. Did you know you can setup a limit how much disk space Time Machine may use. Use the following defaults write Terminal command:
sudo defaults write /Library/Preferences/com.apple.TimeMachine MaxSize -integer XX
Replace XX by the number of megabytes that you want to use, 1 GB = 1024 MB
Example 200GB:
sudo defaults write /Library/Preferences/com.apple.TimeMachine MaxSize -integer 204800
To remove the limit:
sudo defaults delete /Library/Preferences/com.apple.TimeMachine MaxSize
