22.04.2026
Proxmox VE 8 to 9 Upgrade: The Complete Guide for Enterprises
Proxmox VE 8 reaches end of life in August 2026. After that: no security updates, no bugfixes, no support. If you're running production workloads on...

Proxmox is a powerful open-source platform for managing virtualization environments. With Proxmox VE, businesses can efficiently operate and manage virtual machines. Clusters with failover and high-availability features ensure a robust and scalable IT infrastructure.
The following are trademarks of their respective owners: Proxmox VE (Proxmox Server Solutions GmbH). WZ-IT is an independent service provider and has no business, partnership, or contractual relationship with these companies. We offer independent migration, installation, hosting, and operations services.
PVE 9.1 (Debian 13, Kernel 6.17) is the current version. We handle the upgrade — including Ceph, PBS and HA migration.
We accompany your Proxmox journey from consulting through installation to 24/7 operations.
Cluster topology, storage strategy (Ceph vs. ZFS), hardware sizing. Provider-agnostic.
View consultingLicense-free migration — we handle VM conversion, network and storage. Directly to PVE 9.
View migrationInitial installation, single-node to HA cluster with Ceph storage. On Hetzner, OVH, IONOS, STACKIT or on-premise.
View setupUpdates, monitoring, security patches and PVE 8→9 upgrade service. 99.9% SLA.
View maintenancePBS 4.2 with S3 object storage (officially stable). Encrypted, deduplicated, incremental.
View PBSBackup DR, warm standby or hot standby with stretched cluster. Defined RTO/RPO and failover drills.
View DR strategyMFA, firewall segmentation, CrowdSec, audit logging, CVE monitoring. According to BSI Grundschutz and CIS Benchmark.
View security
Proxmox is a powerful open-source platform for managing virtualization environments. With Proxmox VE, businesses can efficiently operate and manage virtual machines. Clusters with failover and high-availability features ensure a robust and scalable IT infrastructure.
Proxmox provides a reliable foundation for modern IT systems, enabling seamless integration into existing infrastructures.
From consulting to implementation to ongoing maintenance - we are your competent partner for all Proxmox projects. Whether you want to build a single virtualization environment, implement a highly available cluster, or optimize your existing Proxmox infrastructure.
We offer tailored solutions: Planning and building new Proxmox environments, migrating existing systems, cluster setup with HA features, and professional maintenance and support. Leverage our expertise for your successful virtualization.
Enables the efficient creation and management of virtual machines with near-native performance.
Building clusters with failover functions for an uninterrupted IT infrastructure.
User-friendly web interface for easy management of all virtualization resources from any device.
Move running virtual machines without downtime between cluster nodes for maximum flexibility.
Managing complex network configurations and supporting modern network standards.
Support for various storage solutions such as local, NAS, SAN, and Ceph for optimal data management.
Automated and reliable backups of VMs and containers, including to remote endpoints.
Enables automation and integration with third-party tools through a powerful interface.
Customizable firewall rules to protect the entire IT infrastructure at the network and VM level. We also assist with IDS/IPS solutions.
Provider-agnostic — from single-node to HA cluster on your preferred platform.

Dedicated servers in DE/FI

Bare metal with vRack

German hosting
Sovereign cloud (Schwarz Group)
Debian 13 "Trixie", Linux Kernel 6.17, Ceph Squid 19.2 — and features that VMware vSphere does not have.
Docker images directly as LXC templates — no Docker-in-VM or Kubernetes.
Resource-to-Node and Resource-to-Resource affinity replace HA Groups.
Complex network architectures directly in the PVE interface.
Snapshots on FC/iSCSI SAN — vendor-agnostic.
We support you in building your own enterprise private cloud based on Proxmox. In your private cloud, you can operate a variety of virtual environments, including Linux and Windows VMs, web servers, business applications, and databases. Our solutions ensure that your critical services are protected by integrated IDS/IPS security solutions, providing robust security and high availability. Whether you need scalable resources for development, a reliable infrastructure for your business processes, or secure environments for sensitive data – with our expertise in Proxmox, we create a tailored private cloud that precisely meets your requirements. Benefit from centralized management, automated backups, and highly available clusters to make your IT infrastructure efficient, flexible, and future-proof.
The perfect solution for your individual requirements
22.04.2026
Proxmox VE 8 reaches end of life in August 2026. After that: no security updates, no bugfixes, no support. If you're running production workloads on...
25.11.2025
Many organizations are currently evaluating the switch from VMware vSphere (ESXi/vCenter) to the open-source virtualization platform Proxmox Virtual Environment (PVE). The reasons are manifold: changed...
16.09.2025
If Proxmox is used without a valid subscription, the familiar "No valid subscription " message appears when logging into the web interface. The Enterprise subscription is...
16.06.2025
To protect against data loss, it is important to create regular backups of your Proxmox environment. A cost-effective and secure way to do this is...
These solutions are often used together with Proxmox
These solutions offer similar functionalities and can be evaluated together
Proxmox VE is an open-source platform for server virtualization and container management. It combines KVM-based virtual machines with LXC containers and provides a web-based management interface. Proxmox is the leading open-source alternative to VMware vSphere.
Proxmox VE 9.1 (November 2025) is the current version, based on Debian 13 "Trixie" and Linux Kernel 6.17. It brings OCI containers in LXC, TPM state in qcow2, HA Rules, SDN Fabric support and thick-LVM snapshots. PVE 8 reaches end of life in August 2026 — an upgrade to PVE 9 should be completed by summer 2026 at the latest. More in our Upgrade Guide.
Proxmox VE is free to use — there are no license fees. Optional enterprise subscriptions with prioritized support are available but not required for production use. Total costs consist primarily of hardware and optionally our managed service.
Since Broadcom's acquisition of VMware, license costs have increased significantly (often 60-80%). Proxmox offers comparable enterprise features (HA, live migration, Ceph storage) without license costs. Switching is especially worthwhile when VMware contracts are expiring. Learn more on our VMware migration page.
Yes. Proxmox VE supports high availability with automatic failover. If a cluster node fails, VMs are automatically started on another node. The requirement is a cluster with at least 3 nodes and shared storage (Ceph, NFS, or iSCSI). PVE 9 introduces more flexible HA Rules instead of the previous HA Groups.
Proxmox supports local storage (ZFS, LVM, ext4), network storage (NFS, iSCSI, Ceph, GlusterFS), and object storage. For HA clusters, we recommend Ceph (integrated in Proxmox) or an external SAN. The choice depends on your performance and redundancy requirements.
PBS is the specialized backup solution for Proxmox VE. It provides incremental, deduplicated and client-side encrypted backups. Since PBS 4.2 (May 2026), S3 object storage is officially stable — backups can be stored on Hetzner Object Storage, MinIO, AWS S3 or Wasabi. More on our PBS page.
We offer three service levels: Standard (Mon-Fri 8am-5pm, response <8h), Professional (Mon-Sun 7am-5pm, response <3h), Enterprise (Mon-Sun 7am-5pm, response <1h). All include 24/7 monitoring, automated updates, backup oversight and 99.9% uptime SLA. Details on our maintenance page.
Yes. We offer training for administrators — from basic concepts to cluster management and Ceph administration. Training can be conducted remotely or on-site.
We first analyze your existing VMware environment (VMs, network, storage), create a migration plan and execute the migration with minimal downtime. Storage conversion (VMDK → qcow2/ZFS), network reconfiguration and cluster setup are handled by us.
In-depth guides from real-world experience.
Whether a specific IT challenge or just an idea – we look forward to the exchange. In a brief conversation, we'll evaluate together if and how your project fits with WZ-IT.
Timo Wevelsiep & Robin Zins
Managing Directors of WZ-IT

