Proxmox VE 9.0 introduces Debian 13, Linux kernel 6.14, LVM snapshot support, SDN Fabrics, HA affinity rules, and a revamped mobile interface.
Proxmox Virtual Environment (VE) has reached version 9.0, marking a significant update for the open-source virtualization platform. This latest release is built on Debian 13 “Trixie” and introduces multiple improvements aimed at better performance, broader compatibility, and more robust enterprise functionality.
Proxmox VE 9.0 Highlights
The shift to Debian 13 means users benefit from updated packages, enhanced hardware support, and tighter security integration. Proxmox VE 9.0 ships with Linux kernel 6.14.8-2, chosen as the stable default, which is expected to boost both compatibility and performance across a wide range of systems.
Among the highlights of this update is full snapshot support for thick-provisioned Logical Volume Manager (LVM) shared storage, which was a long-requested feature, especially from enterprise users running Fibre Channel or iSCSI-based SANs. The system now implements snapshots as volume chains, allowing each derived volume to store only the differences from its parent. This snapshot model extends to other storage types, including Directory, NFS, and CIFS, making it easier for administrators to manage data protection and recovery processes, regardless of the underlying storage infrastructure.
Another significant addition is the introduction of the “Fabrics” feature to the Software-Defined Networking (SDN) stack. Designed to handle complex, routed network environments, Fabrics support multipath configurations and automatic NIC failover. It also enables the creation of spine-leaf network topologies, a typical architecture in high-performance data centers. Support for dynamic routing protocols, including OpenFabric and OSPF, allows for flexible and scalable network management with improved failover capabilities.
To improve virtual machine distribution and resilience in high-availability (HA) clusters, version 9.0 adds support for affinity rules. This allows more granular control over how HA resources are deployed across nodes. For example, linked services like application and database servers can be co-located to reduce latency. In contrast, redundant instances of the same service can be distributed to different nodes for increased fault tolerance.
The mobile experience also sees a noticeable revamp. A new interface built using the Rust-based Yew framework provides streamlined access to key system functions, including starting and stopping VMs and basic configuration tasks. This is all accessible via standard mobile browsers.
Proxmox VE 9.0 Availability and Pricing
Proxmox VE 9.0 is available now for download as a complete ISO image, suitable for bare-metal installation. Upgrades from version 8.x are supported, with a detailed migration path provided for existing users. The platform remains open-source under the GNU Affero General Public License v3, with enterprise-grade support subscriptions available starting at €115 per CPU per year.
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