Nutanix vs Proxmox vs VMware — Which Hypervisor Should You Choose?

Virtualization is the foundation of modern IT infrastructure. Instead of each application having its own physical server, virtualization enables running multiple virtual machines on a single physical server — reducing hardware costs, improving resource utilization, and simplifying management.

But which hypervisor to choose? VMware has been the unquestioned leader for decades, Nutanix revolutionized hyper-converged infrastructure, and Proxmox has become a serious open-source alternative — especially after Broadcom acquired VMware and dramatically changed its pricing.

In this guide, we compare all three solutions from a small and medium business perspective.

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VMware vSphere — Industry Standard

VMware was founded in 1998 and for decades was synonymous with enterprise virtualization. VMware vSphere (ESXi + vCenter) remains the most widespread solution in enterprise environments.

VMware Advantages

Maturity and stability. VMware has 25+ years of development behind it. The platform is extremely stable, well-documented, and tested in the most demanding production environments.

Ecosystem and integrations. Virtually every enterprise software, hardware, and security solution has official VMware integration support.

vMotion — live migration of virtual machines between physical hosts without any downtime. This feature is still the reference point for all other platforms.

High Availability (HA) — automatic restart of VMs on another host when a physical server fails.

VMware Disadvantages

Price — dramatically increased. When Broadcom acquired VMware in 2023, it changed the licensing model from perpetual licenses to mandatory annual subscriptions. Prices rose 3-10x for many users.

Companies that paid $50,000 for a VMware license now receive offers for annual subscriptions of $300,000+. This triggered a mass exodus of users toward alternatives — primarily Proxmox.

Complexity. VMware is powerful but complex. vCenter, vSAN, NSX, vRealize — the ecosystem is rich but requires specialized knowledge and certified administrators.

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Nutanix — Hyper-Converged Infrastructure

Nutanix was founded in 2009 with the goal of simplifying datacenter infrastructure. Instead of separate servers, storage systems, and networks, Nutanix combines everything into a single hyper-converged node (HCI — Hyper-Converged Infrastructure).

Nutanix Advantages

Management simplicity. Prism — the Nutanix management interface — is extremely intuitive. Operations that in VMware require navigating multiple interfaces are done in one place in Nutanix.

Scalability. Adding capacity is trivial — add a new node to the cluster and resources are available within minutes.

AHV — free hypervisor. Nutanix AHV is a KVM-based hypervisor included in the price of Nutanix licenses — no additional virtualization costs.

Nutanix Disadvantages

High initial investment. Minimum viable cluster (3 nodes) costs from $50,000 upwards.

Overkill for smaller companies. Nutanix is designed for datacenter environments with dozens or hundreds of nodes.

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Proxmox VE — Open-Source Alternative

Proxmox Virtual Environment (Proxmox VE) is an open-source virtualization platform based on Debian, developed by Austrian company Proxmox Server Solutions.

Proxmox combines KVM (Kernel-based Virtual Machine) for full virtualization and LXC (Linux Containers) for containerization — all in one interface.

Proxmox Advantages

Free and open-source. Proxmox VE is completely free to download and use. A paid subscription exists for access to enterprise repositories and technical support, but isn’t mandatory.

Excellent performance. KVM virtualization delivers performance close to bare-metal installation. For most workloads, the difference between Proxmox and VMware is negligible.

Clustering. Proxmox supports multi-node clustering with live migration (no downtime), High Availability, and distributed storage (Ceph).

Ceph integration. Proxmox has built-in Ceph integration — an open-source distributed storage system. This enables building HCI-like solutions without Nutanix costs.

Backup and snapshot. Proxmox Backup Server (PBS) is a free VM backup solution with incremental backups and deduplication.

Proxmox Disadvantages

Enterprise support. Without a paid subscription, support comes from the community — which can be a problem for critical production systems in corporate environments.

Smaller ecosystem. Fewer integrations with enterprise tools compared to VMware, though this is rapidly changing.

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Direct Comparison

Feature	VMware vSphere	Nutanix AOS	Proxmox VE
Price	High (subscription)	High	Free
Hypervisor	ESXi	AHV/ESXi	KVM + LXC
HA/Live Migration	✅ Excellent	✅ Excellent	✅ Good
Storage	Separate SAN/vSAN	Integrated HCI	Ceph/local
Backup	Third-party	Native	PBS (free)
Open Source	❌	❌	✅
Enterprise support	✅ Excellent	✅ Excellent	Paid option
Ideal for	Enterprise	Enterprise HCI	SMB / DevOps

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Migrating from VMware to Proxmox

Due to Broadcom pricing changes, many companies are considering migrating from VMware to Proxmox. Here’s what the process looks like:

1. Existing infrastructure analysis Inventory of all VMs, network configurations, storage requirements, and specific VMware features in use.

2. VM conversion VMware VMDK disks need to be converted to QCOW2 format used by KVM:

qemu-img convert -f vmdk -O qcow2 vm-disk.vmdk vm-disk.qcow2

3. Network configuration Proxmox uses Linux bridges for networking — configuration is straightforward but requires understanding of Linux networking.

4. Testing Before production migration, test all applications in the Proxmox environment.

DevTet has experience migrating VMware infrastructures to Proxmox — contact us if you’re considering migration.

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Conclusion — Which Hypervisor to Choose?

Choose VMware if: You have a large corporate infrastructure, VMware-certified administrators, and a budget that justifies Broadcom’s prices.

Choose Nutanix if: You’re building a new datacenter, have the budget for an HCI solution, and want maximum management simplicity at enterprise scale.

Choose Proxmox if: You’re a small or medium business, IT services company, or a company that wants enterprise virtualization without enterprise pricing. We especially recommend Proxmox to companies considering migration from VMware due to Broadcom’s pricing changes.

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DevTet implements and manages Proxmox infrastructure for small and medium businesses. Learn more about our services.