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Re:I nearly lost the Lightroom catalog with of all my photos by climb_stealth on Monday August 30, 2021 @06:44AM (#28354370)
I suggest using Carbon Copy Cloner [0]. I have been bitten by Time Machine corrupting itself and I'm never going back. It works well and they have excellent documentation for pretty much every scenario. And USB backups are bootable. I'm mostly using it with backup to a NAS.

[0] https://bombich.com/

Re:I nearly lost the Lightroom catalog with of all my photos by tailspin2019 on Monday August 30, 2021 @07:46AM (#28354671)
Another vote here for Carbon Copy Cloner.

I have a 3x backup combo of Time Machine to local Synology (and I may as well not bother with this), Arq Backup to Arq Cloud (not flawless but I trust it more than Time Machine) and CCC to local USB-C SSD drives.

CCC is the only backup I actually trust out of the 3, but it's not automatic and relies on my plugging my backup SSDs in occasionally to clone the whole drive. (Which is more an issue with my workflow than CCC itself).

Re:I nearly lost the Lightroom catalog with of all my photos by submeta on Monday August 30, 2021 @06:47AM (#28354379)
Not bootable with latest MacOS anymore, at least not easily.

But ignoring that: CCC is an excellent backup solution for MacOS. Have been bitten by Time Machine twice. Still use it, but do not rely on it.