When Time Machine makes its backups to APFS storage, just what can and can’t you do? How can you prevent large temporary files from stealing space on storage?
Why Time Machine makes snapshots, and how they can grow and apparently consume free space. What you can and should do to manage this.
Problems with the file system of Time Machine backups haven’t gone away with APFS. As there’s no way to copy your backup volume, how to tackle such problems?
Is it overhead from sandboxing, the file system, the throttling of I/O, or the limitations of the Efficiency cores? Is there anything a user can do?
Since Catalina, reports of Time Machine backups slowing to a crawl have become common, but the reasons are unclear. It’s time for Apple to inform us.
A full Time Machine backup over SMB analysed in detail. This reveals that some of the measures reported in the log are likely to be inaccurate and misleading, and gives suggestions for improving performance.
Complete slides analysing the history of Time Machine from first release to backing up to APFS in Big Sur, with detailed diagrams.
Can you migrate your old backups from HFS+ to APFS format? What can slow your backups down? Can you still use AFP, and what about restoring the system?
Links to my presentation, and to a selection of useful articles about Time Machine backups to APFS, and more.
An exploration of how Time Machine backs up to APFS, using Mints to make log access quick, simple, and easy to understand. And notes on changes in Monterey.