Virtualization migration
VMware to Proxmox migration with planning and rollback
Reduce licensing costs and regain control of your stack without blind cutovers. Assessment, wave plan, and validation before go-live.
Proxmox partner · Documented projects · Based in Goiás, Brazil-wide delivery
Related links
VMware-to-Proxmox migration is the process of moving virtual machines, storage, and networking from a VMware environment (ESXi/vCenter) to Proxmox VE while preserving performance, backup, and continuity. It starts with an assessment of the fleet and proceeds in waves, with a pilot, agreed window, validation, and a defined rollback.
Why companies are evaluating this migration
Broadcom’s VMware licensing changes raised renewal costs and reduced contractual predictability for many companies. At the same time, Proxmox VE matured in KVM virtualization, high availability, software-defined storage, and integrated backup. The decision, however, must be technical: not every workload migrates the same way, and storage and network design determine the outcome.
What we assess before migrating
- VM inventory, vCPU, memory, disks, and actual utilization (not provisioned).
- Storage: capacity, IOPS, latency, and protocol (iSCSI, NFS, FC, local).
- Network: VLANs, virtual switches, firewall rules, and dependencies between VMs.
- High availability and restart: which services cannot stop and for how long.
- Current backup, RPO/RTO, and how restore will be validated in the new environment.
- Guest licensing and compatibility with KVM/VirtIO.
Wave-based method
- Assessment and design — node, storage, network, and HA sizing; criticality matrix.
- Pilot — migrate a small, reversible group to validate performance and operations.
- Replication and window — disk copy, final sync, and agreed cutover window.
- Cutover and validation — start VMs, functional tests, monitoring, and driver tuning.
- Rollback — keep the VMware environment until formal acceptance, with a return plan.
- Operations — backup, monitoring, updates, and documentation of the new standard.
VMware and Proxmox: differences that matter
| Item | VMware (ESXi/vCenter) | Proxmox VE |
|---|---|---|
| Hypervisor | Proprietary, licensed per CPU/subscription | KVM + LXC, open source with optional subscription |
| High availability | vSphere HA | Native cluster HA |
| Storage | VMFS, vSAN, and external arrays | LVM, ZFS, Ceph, iSCSI/NFS |
| Backup | Third-party tools or VADP | Built-in backup + Proxmox Backup Server |
| Support | Broadcom/partner contract | Proxmox subscription with enterprise support |
Proxmox is not “free VMware”. It is a different product with its own operating model. The gain comes from correct design, standardization, and support — not just swapping the hypervisor.
Common migration risks
- Sizing nodes by average CPU and discovering the peak in the first week.
- Ignoring storage IOPS and latency and blaming virtualization later.
- Migrating everything at once, without a pilot or rollback.
- Not testing backup and restore in the new environment.
- Keeping VirtIO drivers unvalidated and losing network/disk performance.
- Forgetting firmware, microcode, and hardware/HBA compatibility.
Subscription and support
The Proxmox VE subscription provides access to the stable enterprise repository and vendor support. Nyverra is a Proxmox partner and supplies the subscription with an invoice, helping with sizing and cluster operations after migration.
Why migrate
Practical benefits for your operations
01
Less VMware license lock-in
Proxmox VE is open-core with optional support—we align TCO and roadmap to your contract, without fixed savings promises without an assessment.
02
Wave-based migration
We prioritize less critical workloads, agreed windows, and acceptance criteria per VM or group—with a documented rollback plan.
03
Tools and integration
Disk, network, and storage conversion aligned with your current design (SAN, NAS, ZFS/TrueNAS where applicable).
04
Backup before cutover
Integration with Veeam Backup & Replication or your existing solution—restore tested before shutting down the source hypervisor.
05
Post go-live monitoring
Zabbix, Grafana, or the agreed stack so you do not lose visibility the day after migration.
06
Team enablement
Runbook, basic training, and contracted support via the Nyverra Service Management after delivery.
Scope
What a migration project includes
Pricing and timelines depend on inventory (VM count, storage, RTO/RPO). The proposal details assumptions and exclusions.
- Inventory and assessment: dependencies, networks, storage, windows, and workload criticality.
- Migration plan: waves, tests, rollback, and business communication.
- Assisted or managed execution + Proxmox hypervisor sized per agreed design.
Frequently asked questions
VMware to Proxmox migration FAQ
Ready to assess migration?
Share approximate VM count, VMware version, and target timeline—we reply with commercial next steps.
