Proxmox Backup Server 3.1 available

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Proxmox Staff Member
Staff member
Jul 28, 2015
South Tyrol/Italy
we're pleased to announce the release of Proxmox Backup Server 3.1. It's based on Debian 12.2 "Bookworm", but uses the newer Linux kernel 6.5, and includes ZFS 2.2.0 (with stable fixes from the upcoming 2.2.2 backported).

Here are the highlights
  • Debian 12.2, with a newer Linux kernel 6.5
  • ZFS 2.2.0 including important bugfixes from 2.2.2 already
  • Secure Boot support
  • Local sync jobs
  • Tape Backup system with LTO 9 support
  • Countless improvements for general client and backend usability.
We have included countless bugfixes and improvements on many places; see the release notes for all details.

Release notes

Press release

Alternate ISO download:



Source code

Q: Can I upgrade the latest Proxmox Backup Server 2.x to 3 with apt?
A: Yes, please follow the upgrade instructions on

Q: How does this integrate into Proxmox Virtual Environment?
A: Just add a Proxmox Backup Server datastore as a new storage target in your Proxmox VE. Make sure that you run the latest Proxmox VE 8.x.

Q: Is Proxmox Backup Server still compatible with older clients or Proxmox VE releases?
A: We are actively testing compatibility between all currently supported major versions, including the previous version. Full compatibility with even older (major) client versions is supported only on a best-effort basis.

Q: How do I install the proxmox-backup-client on my Debian or Ubuntu server?
A: We provide a "Proxmox Backup Client-only Repository", see

Q: What will happen with the existing backup tool (vzdump) in Proxmox Virtual Environment?
A: You can still use vzdump. The new backup is an additional, but very powerful way to backup and restore your VMs and containers.

Q: Is there any recommended server hardware for the Proxmox Backup Server?
A: We recommend enterprise-grade server hardware components, with fast local SSD/NVMe storage. Access and response times from rotating drives will slow down all backup server operations. See

Q: Can I install Proxmox Backup Server on Debian, in a VM, as LXC or alongside with Proxmox VE?
A: Yes, but all this is not the recommended setup (expert use only).

Q: Where can I get more information about upcoming features?
A: Follow the announcement forum and pbs-devel mailing list, and subscribe to our newsletter and see
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