I think tooling only cares for partitions. So /home and / are usually runtime-critical (can be on different disks or network storage), while internal data disks count as removable, since you can unmount their partitions.
That depends on your usecase.
I have setup servers where I mounted extra drives on /srv/nfs
When/If I switch to Linux I will probably mount my secondary drives to folders like
/home/stoy/videos
/home/stoy/music
/home/stoy/photos
/home/stoy/documents
/home/stoy/games
The ~/games will probably be an LVM since it contains little critical data and may absolutely need to be expanded to span several drives, though I would also be able to reduce the size of it and remove a drive from the LVM if needed.
I'd make a simple conky config to keep track of the drive space used
I'd just keep using the default automount spot for automounting drives.
My /home is also on a separate filesystem, so in principle I don't like to mounting data under there, because then I cannot unmount /home (e.g. for fsck purposes) unless I unmount also all the other filesystems there. I keep all my filesystems on LVM.
So I just mount to /mnt and use symlinks.
Exception: sshfs I often mount to home.
So you suggest not to mount like the guy above said /home/stoy/videos ?
And suggest symlinks instead?
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