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Infrastructure / Virtualization

Why SMBs Are Abandoning VMware: What to Use Instead

Broadcom's acquisition changed the licensing math for every SMB on ESXi. Here's what practitioners are switching to, why, and the narrow set of cases where staying on VMware still makes sense.

By William Bradshaw | March 30, 2026 | 7 min read

In January 2024, Broadcom discontinued the no-cost ESXi hypervisor that tens of thousands of SMBs had been running in production for years. Then came the follow-on: perpetual licenses eliminated, per-core subscription bundles introduced, and grandfathering paths quietly closed. Organizations running two or four ESXi hosts (the typical SMB footprint) suddenly faced mandatory annual licensing bills that could reach $10,000-$40,000 with no way to stay on the model they had budgeted around.

This article is the business case for evaluating alternatives. Not a step-by-step migration guide, but the strategic framing: what changed, why Proxmox has emerged as the default replacement, what migration actually involves at a high level, and the honest set of scenarios where staying on VMware still makes sense. If you have already made the decision and need the technical execution, start with our complete ESXi to Proxmox migration guide.

What Changed Under Broadcom

The VMware acquisition closed in late 2023. Within months, the product and licensing structure changed materially:

• VMware ESXi (the no-cost edition) was discontinued. The hypervisor that had been available at no licensing cost since 2011 (the version most SMBs were running) was pulled. No grace period for existing installs; no migration path to a comparable no-cost tier.
• Perpetual licenses were eliminated. Customers who had purchased perpetual ESXi or vSphere licenses lost the ability to renew support on those terms. Broadcom's model moved to subscription-only.
• Per-core bundled subscriptions replaced per-socket pricing. The new VMware Cloud Foundation (VCF) bundles include features most SMBs will never use (NSX-T, vSAN, Aria Suite) at per-core pricing that scales poorly for small environments.
• SMB and small-partner programs were consolidated or eliminated. Programs that had made VMware accessible to smaller VARs and MSPs were restructured, reducing the channel availability that SMBs relied on for licensing access.

The licensing model that SMBs depended on no longer exists. The question is not whether to evaluate alternatives. It is which one.

Why Proxmox Has Become the Default Replacement

The practical alternatives for SMBs running on-premises workloads are Proxmox VE, Microsoft Hyper-V, and cloud migration. Here is why most organizations doing this migration land on Proxmox:

vs. Hyper-V

Hyper-V is viable but ties you to Windows Server licensing for every host. Proxmox runs on Debian with no host OS licensing cost, supports ZFS natively, and provides a capable web UI without requiring System Center for cluster management.

vs. Cloud Migration

Cloud works well for some workloads. For file servers, local databases, and latency-sensitive applications serving on-site users, a cloud VM at $200-800/month per instance adds up quickly compared to amortizing existing on-premises hardware over five years.

vs. Nutanix / Scale HC3

Both are strong enterprise platforms, but their pricing tiers recreate the same problem. If your reason for leaving VMware is the licensing burden, paying comparable rates for Nutanix AHV or Scale HC3 subscriptions does not solve the underlying issue.

Proxmox VE is open-source software (AGPL v3), actively maintained by Proxmox Server Solutions GmbH, and ships with KVM virtualization, LXC containers, ZFS, optional Ceph clustering, and a full web-based management interface. An optional enterprise subscription provides stable repository access and SLA-backed support at roughly $345/year per node, but the platform runs in production without one.

No hypervisor licensing cost at the host level is a fundamentally different economic model than what SMBs just lost. For a direct feature-by-feature comparison, see our article on Proxmox vs VMware for SMB environments.

What the Migration Looks Like in Practice

This section is not a how-to. It is a calibration of effort: what you should expect before you commit to the project.

The Technical Lift

VM conversion uses qemu-img to convert VMDK disk images to qcow2 format. Linux VMs convert cleanly in most cases; the process is mechanical. Windows VMs require VirtIO drivers for disk and network performance; installing them before migration is significantly easier than injecting them after.

What does not carry over: VMware Tools (replace with QEMU Guest Agent), vSphere API integrations, VMware-specific monitoring hooks, and anything built on the vCenter SDK. If your environment has custom automation that calls vSphere APIs, plan to rewrite or replace those before cutting over.

Realistic Timelines

A small environment of 3-5 non-critical VMs can move in a single weekend. A typical SMB footprint of 10-20 VMs, migrated in phased tiers with validation periods between tiers, takes 6-12 weeks when done responsibly. Rushing this to hit an artificial deadline is the primary cause of migration incidents.

The migration itself is mechanical. The planning (inventory, dependency mapping, cutover sequencing) is where migrations fail.

For the full technical process including ZFS storage layout decisions, Windows VM driver handling, and a production-ready migration checklist, see our step-by-step ESXi to Proxmox migration guide. For production-environment-specific considerations (snapshot strategy, HA topology differences, and phased rollout planning), see what production environments actually need before migrating.

When Staying on VMware Still Makes Sense

Not every environment should migrate immediately. There are scenarios where the calculus is different:

• Active ELA with locked pricing. If you negotiated an Enterprise License Agreement before the acquisition and have pricing locked through a contract term, run out the contract. There is no reason to take on migration risk while you are not saving money yet. Plan the migration for the refresh cycle.
• Deep NSX-T, vSAN, or Horizon dependencies. If your environment is built around VMware's SDN stack (NSX-T) or converged storage (vSAN), the re-platforming cost may exceed the licensing savings for your remaining contract period. Proxmox has SDN capabilities and can integrate with Ceph, but the migration scope is materially larger.
• Compliance requirements specifying a hypervisor vendor. Uncommon but real in some government-adjacent, healthcare, or financial services contexts where certification frameworks reference specific vendor platforms. Verify before assuming this applies; in most SMB contexts it does not.

If none of those apply to your environment, you are almost certainly better off making the move. The longer you stay on an unsupported platform with no vendor patch path, the larger the eventual migration becomes.

Building the Replacement Environment Right

Proxmox is straightforward to install, but the surrounding infrastructure decisions matter: ZFS pool design, backup strategy with Proxmox Backup Server, VLAN configuration on Linux bridges, and Ansible-based provisioning for repeatability. Getting those right on a first deployment is much easier in a lab environment before anything production-critical is running on the platform.

Running a validated lab environment to test workloads before committing the production cut-over is standard practice for migration projects we run. It catches the platform-specific surprises (driver behavior, storage performance, network topology) before they become incidents.

Once migrated, establishing a clean security baseline for the new environment is straightforward. netvuln-tool can scan the post-migration network to identify misconfigurations, unpatched services, and exposure before the environment is considered production-hardened.

Ready to Move Off VMware?

Whether you need help planning the migration, validating workloads in a lab environment, or want a security baseline for your new Proxmox cluster: we have done this in production.

Schedule a Migration Consultation See Our Lab Environment Service →