Proxmox Virtual Environment 9.0 with Debian 13 released

Proxmox Virtual Environment 9.0 with Debian 13 released

VIENNA, Austria – August 05, 2025 – Leading open-source server solutions provider Proxmox Server Solutions GmbH (henceforth "Proxmox"), celebrating its 20th year of innovation, today announced the release of Proxmox Virtual Environment (VE) 9.0. Main highlight of this update is a modernized core built upon Debian 13 “Trixie”, ensuring a robust foundation for the platform.

Proxmox VE 9.0 further introduces significant advancements in both storage and networking capabilities, addressing critical enterprise demands. A highlight is the long-awaited support for snapshots on thick-provisioned LVM shared storage, improving storage management capabilities especially for enterprise users with Fibre Channel (FC) or iSCSI SAN environments. With newly added “fabric” support for Software-Defined Networking (SDN), administrators can construct highly complex and scalable network architectures.

Highlights in Proxmox Virtual Environment 9.0

Debian 13 “Trixie” at the core

This core update is based on Debian 13 “Trixie”, bringing the latest Debian release as foundation for Proxmox VE including newer packages, improved hardware support, and enhanced security. Proxmox VE is using a newer Linux kernel 6.14.8-2 as stable default enhancing hardware compatibility and performance.

Also, updates to the latest versions of leading open-source technologies for virtual environments like QEMU 10.0.2, LXC 6.0.4, Ceph Squid 19.2.3, and ZFS 2.3.3 are included. ZFS now supports adding new devices to existing RAIDZ pools with minimal downtime. For existing users of Proxmox VE 8.4 or older versions, an extensively tested and detailed upgrade path is available to enable a smooth upgrade.

Snapshots for thick-provisioned LVM shared storage

Virtual Machines (VMs) utilizing thick-provisioned LVM shared storages, such as those backed by iSCSI or FC-based SANs, now benefit from snapshot functionality out of the box. This is achieved by implementing snapshots as volume chains, where a volume based on a snapshot only records differences to its parent snapshot volume. Directory, NFS, and CIFS storages also gain additional support for snapshots as volume chains.

This new feature provides a powerful and highly requested capability for customers with traditional SAN infrastructure who have historically relied on clustered file systems. While direct integrations from many storage vendors continue to grow, this new feature closes the gap by providing a storage-independent solution for snapshots. This gives customers the independence to seamlessly manage their snapshots regardless of their hardware, without compromising on convenience.

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