All full backups are in the tar
format containing both the configuration file and virtual disk image file. The backup files are all you need to restore a virtual machine on any nodes and on any storage. Full backup files are named based on the several following formats for both KVM and LXC virtual machines:
vzdump-lxc-<ct_id>-YYYY_MM_DD-HH_MM_SS.tar vzdump-lxc-<ct_id>-YYYY_MM_DD-HH_MM_SS.tar.lzo vzdump-lxc-<ct_id>-YYYY_MM_DD-HH_MM_SS.tar.gz vzdump-qemu-<vm_id>-YYYY_MM_DD-HH_MM_SS.vma vzdump-qemu-<vm_id>-YYYY_MM_DD-HH_MM_SS.vma.lzo vzdump-qemu-<vm_id>-YYYY_MM_DD-HH_MM_SS.vma.fz
The following screenshot shows a list of backup files in a backup storage node, as seen from the Proxmox GUI:
In Proxmox, we can schedule automated backup tasks or commit manual backups for each virtual machine. Whether scheduled or manual, the backup process is the same for both KVM and LXC virtual machines.