Since I updated to High Sierra, I frequently get the "No Backups for x Days" notification. I used to be able to make this go away by turning off Time Machine in the System Preferences until I needed it, but there is no way to turn Time Machine off anymore. How can I get rid of these notifications?
2 Answers
For macOS 12 and earlier (pre-Ventura):
In the Time Machine preferences, you have to right-click on the drive icon and then select "Stop Using {Drive Name} for Backup".
For macOS 13 and later:
In Time Machine settings page, select the drive icon and click the [-] button at the bottom of the list.
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I verified this. It is a good solution. To turn Time Machine back on, just select the backup disk again. Dec 28, 2017 at 2:06
I suggest you get TimeMachineEditor and set your backup schedule to once a week or some time period you find more suitable. This app overrides the hourly backup default schedule of Time Machine and lets you define time periods to prohibit backups.