Time Machine can’t make backups to a disk formatted in APFS. Oh yes it can – and here’s how you can do it too.
sparse bundle
Saves you from having to learn how to use hdiutil, and supports 6 different file systems and custom band sizes.
Is it better to make sparse bundles ‘snug’, sizing them so that they don’t have as much free space? What if you then need to resize them?
They readily grow in size up to their maximum. But getting them to shrink when contents are reduced isn’t as easy.
An efficient means of storage with many uses, but riddled with bugs and shortcomings. Explains how to compact and resize them, and more.
Tests bring some surprises, with encrypted sparse bundles looking resilient to small amounts of corruption.
Why you should always protect backup storage with a UPS. Should you also rebuild its directories every month? And when to archive rather than back up.
What if you don’t want whole disk encryption? If your Mac doesn’t have T2, or if you’re using an external drive, encryption is still performed in software. Here’s a good solution.
The Eclectic Light Company 