In KVM environments you can choose between several virtual disk formats. is especially useful for firewall appliances for several reasons:
Deployment and Validation of a Versioned KVM Image: A Case Study of Pa-vm-kvm-9.0.1.qcow2 Pa-vm-kvm-9.0.1.qcow2
Explicitly states that this is a virtual machine image, not a container (Docker) or a bare-metal installer. In KVM environments you can choose between several
This guide outlines how to handle the PA-VM-KVM-9.0.1.qcow2 file, which is a virtual hard disk image for the (version 9.0.1) designed for KVM-based hypervisors like EVE-NG or Ubuntu KVM. File Overview Pa-vm-kvm-9.0.1.qcow2
Minimum of 4.5 GB RAM (8 GB or more recommended to enable advanced features like data filtering and extensive logging).