Like Proxmox VE, the new release of Proxmox Backup Server is based on the upcoming Debian Bullseye and includes Kernel 5.11 as well as ZFS 2.0.
This week, version 7 of the Proxmox Virtualization Environment landed. It is already based on the upcoming Debian 11, and among other improvements, it supports using BTRFS and Ceph version 16.2.
The newest Proxmox VE release comes with single-file restore, QEMU 5.2, LXC 4.0, and ZFS 2.0.4.
Version 1.1 of the Proxmox Backup Server is based on Debian 10.9 with a 5.4 kernel 5.4 and uses ZFS 2.0.
In this post, Michael Prokop does an in-depth post-mortem on the outage of a Proxmox hyper-converged Ceph cluster.