Is Time Machine becoming erratic? A simple diagnostic process can establish what the problem is, and how to deal with it.
Time Machine
macOS Sierra doesn’t run periodic backups using a simple mechanism. Here’s the story in full detail.
Working out why Time Machine backups go wrong isn’t necessarily that different from unravelling classical mythology. In some ways.
Getting deeper into using Sierra’s new logs, and investigating why Time Machine backups become irregular.
Browsing existing log entries in macOS Sierra is now much easier and more powerful.
Does macOS scheduling fail when it has been running for more than 10 days? Irregular backups suggest that it does.
Can’t find what you want in Console? Try this new log browser: although still a beta-release, I think it will do the job.
It looks like this will arrive shortly on iOS devices, with 10.3. What does it offer for Macs, and when will it ship?
Please post comments adding to this list if you think you have found a bug, so that others can be aware too.
Some users are having problems getting Time Machine to work in Sierra. Here are some suggestions to get that first backup completed.
The Eclectic Light Company 