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Comment by carlob | Hacker News Reader

I'm gonna answer these myself. Apparently sudo tmutil snapshot is the local snapshot, not the remote backup and it has existed as a verb since way before APFS existed. So now I guess the question is: did the implementation of local snapshots change with APFS?

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Yes. They talked about APFS and the new local Time Machine implementation at WWDC.

You can view the dates of your local snapshots dates with:

    tmutil listlocalsnapshotdates /

I have one from last week, two from yesterday, and two from today.

Yes, I'm pretty sure it did. I seem to remember one of the APFS sessions at WWDC (either 2016 or 2017) had a demo about how local TM snapshots used to work (really kind of a hack), and how APFS would improve the situation dramatically.

Does anyone happen to know if the new Time Machine backups are automagically better (upgraded), or should I start over with a fresh backup destination?

The new implementation only applies to local time machine backups. Backups to external drives have not changed.

Is there a way to move this backup to any other storage mechanism, say Dropbox?

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