[pbs-devel] Proxmox Backup Server 2.1 released!

Martin Maurer martin at proxmox.com
Tue Nov 23 14:21:09 CET 2021

Hi all,

We are happy to announce version 2.1 of our Proxmox Backup Server! It's based on Debian 11.1 (codename "Bullseye"), but using the newer Linux kernel 5.13, and including OpenZFS 2.1.

We have improved the backup management now supporting flexible traffic-control bandwidth limits; this allows you to set limits for incoming and outgoing traffic from a set of networks. Also ‘group-filter’ for sync jobs and tape-backup jobs, and protected backups are possible.

Countless bugfixes and smaller improvements are included as well, see the full release notes for details.

A big THANK YOU to our community! We are really grateful for all the support and feedback, testing, bug reporting and patch submitting.

Release notes

Press release

Alternate ISO download:



Community Forum


Source Code


Q: Can I dist-upgrade Proxmox Backup Server 2.0 to 2.1 with apt?
A: Yes, just update via GUI or run "apt update && apt dist-upgrade"

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 7.1.

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 https://pbs.proxmox.com/docs/installation.html#client-installation

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 https://pbs.proxmox.com/docs/installation.html#recommended-server-system-requirements

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 https://lists.proxmox.com/cgi-bin/mailman/listinfo/pbs-devel, and subscribe to our newsletter https://www.proxmox.com/news.

Best Regards,

Martin Maurer

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