In the Proxmox shell, type "cd /etc/pve/lxc" and type "ls". You should see a file called "101.conf". If you type "nano ...
I have a TrueNAS Core box that's been working well for me for a couple years. I also recently converted a Mac Pro 5,1 into a gaming PC (streaming server using Parsec), and decommissioned the old Ryzen ...