Super excited to install Zorin OS 16 Pro on my old HP Elitedesk 800 G2 tiny/mini pc. Should I use ZFS on the single 240GB SATA SSD?
That's completely up to your preference and experience. Personally I've never used ZFS, so I can't speak to how well it works on Zorin OS. It should however work flawlessly and you really shouldn't notice much difference between it and say ext4 or btrfs on a single drive.
Thanks! I went ahead and used ZFS. So far so good!