macOS Sonoma 14.6, Time Machine re-backing up entire Photos Library frequently

I store my Photos Library on an external 2TB Thunderbolt SSD. I did so following Apple's instructions here: Move your Photos library to save space on your Mac - Apple Support. When using Time Machine to backup my Mac Studio Time Machine often re-backs up my entire Photos Library of 945GB of photos and everything else in the Pictures folder (another 500GB). Why is Time Machine doing this? I also have "Ignore ownership on this volume" checked on as mentioned in the Apple Support document.

Why is Time Machine re-backing up everything seemingly on a regular basis?

Mac Studio, macOS 14.6

Posted on Aug 7, 2024 11:26 AM

16 replies

Oct 28, 2024 7:58 PM in response to muguy

I know Time Machine should be doing incremental backups, but when Time Machine backs up 860+ Gigabytes of my 968.75GB Photos Library that's almost backing up my Photos Library all over again.

macOS Sonoma 14.6, Time Machine re-backing up entire Photos Library frequently

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