/data has been that area for me. It has been common practice since the late 90s to separate OS and data on completely different devices even The homedirs belon

/data has been that area for me. It has been common practice since the late 90s to separate OS and data on completely different devices even The homedirs belong on the OS drives and are managed by the OS. Anything you want to keep safe goes on the data volume where backups run. It’s also very nice to just disconnect the data drives before any upgrades. You can’t corrupt a filesystem that isn’t even present to the system