T2M2 (The Time Machine Mechanic) is a Mac utility app from Howard Oakley (The Eclectic Light Co.) that helps check on the integrity of Apple’s Time Machine backup system, analyzing your Mac’s system logs to check for anomalies and errors and reporting on backup volumes, file counts, space usage, deletions, scheduling, errors, intervals, deep scans, compaction, and more. The app includes detailed built-in help and a “Back up Now” button.
T2M2 1.12 is a free download for macOS 10.12 and later.
Much of the time, Time Machine backups work fine. Every hour or so, your Mac automatically makes a new backup, and when you need to retrieve something from those backups, it’s there, ready for you. But Time Machine can and does go wrong, and often does not warn you that it has stopped making backups regularly, has stopped working altogether, or that errors have occurred. You may only discover this when you go to use your backup; it is then too late. The Time Machine Mechanic, T2M2 for short, is an easy-to-use tool which checks that your backups are being made correctly. It tells you details such as how much has been backed up, and when. It reports any errors which have occurred, and keeps you fully informed about what has been going on with Time Machine.