@Inept@lemmy.world ZFS, and oh boy was that an adventure since my drive was btrfs and i wanted to keep my home and had no way to make a backup of it i had to do some wierd stuff with partions to temporarly have an extra partion to store my home in then install freebsd move files to freebsd and delete the extra partion and resize the zfs one
I asked because you may want to look at adjusting the default ARC settings.
The justification for ARC is that to a server system spare memory is wasted memory, although if you're like me you won't like seeing "low memory" messages when all you have open is a terminal.