Availability of Proxmox Backup Server V.3.4

Proxmox Server Solutions GmbH announced the release of Backup Server version 3.4.

Designed to address enterprise data protection needs, this latest version of the open-source backup solution introduces new capabilities that further improve performance and usability.

Highlights in Proxmox Backup Server 3.4

Optimized Performance for Garbage Collection (GC): To increase storage efficiency through deduplication, backup data in Proxmox Backup Server is saved as chunks. In order to free up storage space after backup snapshots have been deleted, a garbage collection (GC) process identifies and cleans up unreferenced backup data chunks. This version 3.4 optimizes the GC mechanism and integrates a cache to reduce the number of expensive file metadata updates. While this enhancement increases memory usage, it substantially reduces execution time, resulting in faster and more efficient garbage collection. The caching mechanism can be fine-tuned on a per-datastore basis.
Granular backup snapshot selection for sync jobs: Offsite backups are of great interest for data security and therefore Proxmox Backup Server provides sync jobs to push or pull backup snapshots to and from remote Proxmox Backup Server instances. Group filters already allow the selection of which backup groups should be synchronized. In this latest version, the selection functionality has been extended to allow exclusive synchronization of encrypted or verified backup snapshots.
Static build of Proxmox Backup client: While the company’s Backup Server is tightly integrated with Proxmox VE, its command-line client can also be used outside of Proxmox VE. A new statically-linked binary of the command-line client makes it easier to create file-level backups of arbitrary Linux hosts.
Increased throughput for tape backup: Since version 3.4, Proxmox Backup Server now allows to increase the number of worker threads when reading chunks during tape backup, which can significantly increase the throughput in certain setups.
Latest versions of open-source technologies: This version is based on Debian 12.10 (‘Bookworm’), but uses a newer Linux kernel 6.8.12-9 and includes ZFS 2.2.7 (with compatibility patches for Kernel 6.14). While the kernel 6.8.12-9 is the stable default, Linux kernel 6.14 can optionally be installed for better support of the latest hardware.

Proxmox Backup Server integrates into Proxmox Virtual Environment – users just need to add a datastore of the firm’s Backup Server as a new storage backup target to Proxmox VE.

Availability:

Proxmox Backup Server 3.4 is available for download.
Users can either update their version of the solution or install the ISO image on bare-metal using the Installation Wizard. Distribution upgrades from older versions of Proxmox Backup Server are possible via APT. Optionally, the company’s Backup Server can be installed on top of Debian.
License: Proxmox Backup Server is free and open-source software, published under the GNU AGPLv3.
Enterprise Support: For enterprise users, Proxmox Server Solutions offers a subscription-based support model, which provides access to the extensively tested Enterprise Repository, with regular updates via the web interface, as well as technical support on a subscription basis. Prices start at EUR 540/server, including unlimited backup storage and unlimited backup-clients.

Resources :
ISO Image Download
Forum Announcement
Roadmap: For published and upcoming features