What are you using? (Proxmox, Ubuntu KVM, OpenStack?)
QCOW2 is the native format for QEMU and is commonly used in OpenStack, Proxmox, and native KVM environments because of its support for snapshots, compression, and thin provisioning. panoramakvm1004qcow2
Monitor CPU and memory utilization regularly. The Panorama KVM appliance partitions logging disks larger than 2TB into 2TB partitions, so plan storage accordingly. What are you using