Here's the 4200.conf file contents:
balloon: 3072
bootdisk: ide0
cores: 2
ide0: file=local:4200/vm-4200-disk-1.raw,size=100G
ide2: file=local:iso/ubuntu-16.04.1-server-amd64.iso,media=cdrom
machine: pc-i440fx-2.5
memory: 4096
name: ELKServer
net0: e1000=62:64:36:65:32:35,bridge=vmbr0
numa: 0
ostype: l26
smbios1: uuid=1667cb30-b625-44ad-bdf3-ebe17914ecfe
sockets: 1