Scheduling

19. Checks on the scheduling systems. When T2M2 suspects that the DAS and CTS systems which are responsible for scheduling automatic backups (and much more besides) may not be working correctly, it will automatically run additional checks covering those systems. These are introduced by the message

Running check on scheduling system (CTS and DAS).

If that message does not appear, those additional checks will not be run. It is still possible that automatic scheduling has stopped working properly: if you are suspicious of that, run T2M2 again in an hour or so.

The first of these additional checks runs another log analysis, at the end of which either of the following messages will appear:

DAS appears to have stopped rescoring activities over the last 90 minutes.

DAS appears to be rescoring normally over the last 90 minutes.

The next message indicates that checks on CTS are being run:

Running CTS check next.

Those results are given in either of the following messages:

CTS has not been told to run a backup in the last 90 minutes. Scheduling may have stopped.

CTS has been told to run a backup in the last 90 minutes but failed to do so.

You will then be advised to

Consider restarting your Mac.

If you wish to investigate this further, you will need to browse the log using a tool such as my free Ulbow, which provides much deeper insight into DAS and CTS. These scheduling systems are complex, and their analysis is still limited.

⚠️ Note that backups may also be skipped because the Mac is sleeping at the time: that’s perfectly normal.

➜ More tools

➜ Interpret result

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