2 Node Cluster or 3 Node Cluster
I am new to Proxmox, I already have Beelink MiniPC Intel N100, 16GB setup with Proxmox, recently I bought a used ThinkCenter M710Q, 16B RAM, i5-6500T to play around with a 2 node cluster. My main aim is to learn and play around, make and break, and try new features like Backup, Datacenter Manager etc.
I have the budget to buy another MiniPC or a used ThinkCenter or Dell PC. I know when I have 3 nodes I have better HA, qorum. What other features will I miss when I have only 2 node Cluster? Do you recommend I have 3 node as general setup?