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Where Are the Sanity Checks?

Where are the sanity checks?

https://eclecticlight.co/2023/12/25/where-are-the-sanity-checks/

When did you last see figures on your Mac that were unbelievable, like 60 TB of snapshots on a 2 TB SSD? We need more sanity checking.

There is a discussion on Hacker News, but feel free to comment here as well.

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visc

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Time Machine backups rely on hard links a lot, there are files in each snapshot pointing at the same data on disk. I imagine that could be what is going on here. This person could actually have had 60Tb worth of backup data sets on a 2Tb drive, only possible because there are very few differences between the data sets.