APFS support for Time Machine on Mojave?

Question

JongleurX OP

Created Aug ’18

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TL;DR: Has anybody tried testing whether Mojave's Time Machine application supports APFS volumes?

I was excited to check out APFS when High Sierra came out, and upgraded all my volumes (including my Time Machine volume) to APFS. It was only after that that I realized that Time Machine doesn't yet support APFS, as documented here and discussed previously in the beta forums for 10.13 (High Sierra).

I can personally work around it by using Disk Utility to add a partition with a legacy filesystem and shrinking my APFS volume to just big enough to keep my legacy data and Time Machine backups, but your average non-developer user would struggle with this, so just wondering if anybody has tried this yet. (I don't have a spare Mac that I feel comfortable installing Mojave beta on prior to the official release.)

Thanks in advance to anybody who comments.

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Answer 1

OkieDoke OP

Aug ’18

To my understanding and from my experience, the partition on Time Machine is irrelevant. I have a MacBook Pro and a Western Digital NAS. The NAS has native support to be used as a Time Machine backup location, something I’ve been taking full advantage of since Yosemite. When I went from High Sierra to Mojave, I changed my MBP SSDs from HFS+ to APFS but I still backup to the same TM backup and have had no issues with backups and restores.

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Answer 2

franklinveaux OP

Oct ’18

This doesn't actually address the question. Since Apple unveiled APFS, the format of a Time Machine volume does indeed matter; Time Machine can back up from an APFS volume but it cannot back up to an APFS volume. A Time Machine disk must be formatted MacOS Extended.

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