Backup and Restore - Proxmox VE
https://pve.proxmox.com/wiki/Backup_and_RestoreIt works by performing a Proxmox VE live backup, in which data blocks are copied while the VM is running. If the guest agent is enabled ( agent: 1) and running, it calls guest-fsfreeze-freeze and guest-fsfreeze-thaw to improve consistency. A technical overview of the Proxmox VE live backup for QemuServer can be found online here.
Backup speed KVM vs LXC | Proxmox Support Forum
forum.proxmox.com › backup-speed-kvm-vs-lxcMar 29, 2021 · 26. Mar 29, 2021. #1. LXC has more performance comparing to KVM. But as I read LXC container backup is a quite slow, because it is like a type of the file system backup. I mean you need to copy like all the files with LXC and KVM is just a single huge file. Could someone tell me if I backup 2TB container of very small files (mail server), how ...