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Hyperconverged · HCI · Buyer's Guide

Best HCI platform UK 2026: Nutanix vs VMware vSAN vs Microsoft Azure Stack HCI

Servnet Editorial · Data Centre Practice12 min read

The UK hyperconverged shortlist has narrowed to three: Nutanix, VMware vSAN, and Microsoft Azure Stack HCI (now Azure Local). The Broadcom acquisition of VMware in 2024 reshuffled the market — many UK customers are actively evaluating alternatives, and Nutanix + Azure Stack HCI are the credible destinations. This is the honest UK partner read on which to pick.

Nutanix · Azure Stack HCI · VMware vSAN — UK HCI
NutanixAzure StackvSANHypervisor lock-inNone (AHV/ESXi)Hyper-VESXiCloud bridgeNC2 on AWS/AzureNative AzureVMC on AWSPer-node costPremiumMidPremium (post-Broadcom)UK engineer poolStrongGrowingLargestBest forMulti-cloudAzure-alignedExisting VMware

What changed in 2024-2025

Broadcom acquired VMware in November 2023. Subsequent licensing changes — perpetual licences withdrawn, subscription-only, bundling of Cloud Foundation, sharp price increases for many UK customers — drove a wave of HCI re-evaluations.

Nutanix benefited from this. Many vSAN ReadyNode customers ported to AHV (Nutanix's included KVM-based hypervisor) — eliminating VMware licensing entirely while keeping HCI architecture.

Azure Stack HCI was rebranded to Azure Local in 2025 with broader hardware support + tighter Azure Arc integration. It's now genuinely credible for Microsoft-shop customers.

Nutanix — when to pick it

You're moving off VMware vSAN post-Broadcom and want to eliminate VMware licensing entirely (AHV included; no separate hypervisor licence).

You want a single platform across on-prem + AWS + Azure + GCP (Nutanix Cloud Clusters / NC2).

You value the operational simplicity of Prism Central — broadly recognised as best-in-class HCI management.

See our Nutanix UK partner page + Nutanix appliance catalogue.

VMware vSAN — when to keep / pick it

You have a deep VMware investment (NSX, Aria Operations, vRealize Automation, Tanzu) and the operational + skills cost of moving exceeds the licensing pain.

You're committed to ESXi long-term and accept the new subscription model.

VMware Cloud Foundation (VCF) gives you a single integrated stack across compute + storage + network + management; this is unmatched if you can absorb the cost.

Microsoft Azure Stack HCI (Azure Local) — when to pick it

You're a Microsoft shop and want one tenant + one bill across on-prem + Azure.

Hyper-V is your existing hypervisor or your team has Microsoft skills.

Azure Arc-managed: same governance, monitoring, security policy across on-prem + Azure VMs.

Hardware partners (Dell AX-770, HPE ProLiant, Lenovo ThinkAgile MX) give you choice without locking you to one OEM.

HCI node — what's in one chassis
ComputeCPU + RAMCache SSDNVMeCapacityNVMe / SATA25/100GbEEast-west fabricStorage SWAOS / S2D / vSAN

Total cost — 5-year picture (100 VMs, 2-node start, scale to 8 nodes)

VMware vSAN post-Broadcom: highest 5-year TCO by 20-40% in most cases. The subscription model + VCF bundling drives this.

Nutanix: middle of the pack. Per-CPU-core licensing for NCI Pro / Ultimate + add-ons (NCM, NDB) sized to your workload mix.

Azure Stack HCI: lowest if you're already on Microsoft 365 E5 / Azure spend. The "per physical core per month" model is competitive especially with Azure Hybrid Benefit applied.

Caveat: hardware refresh costs are similar across all three. The licensing delta is the swing factor.

What Servnet does

Servnet is an authorised UK partner of Nutanix, VMware (still) and Microsoft. We sell, deploy and migrate between any of the three — and we're honest that the right answer depends as much on team skills + ops capacity as on platform features.

A typical HCI selection engagement: 1) discovery workshop (existing estate + workload mix + skills audit), 2) sized recommendation across all three with 5-year TCO model, 3) PoV / proof of value (4 weeks), 4) phased deployment + workload migration, 5) legacy three-tier decommission.

Key takeaways
  • Broadcom changed the HCI landscape — most vSAN customers are at least evaluating alternatives.
  • Nutanix is the most-common destination for vSAN → alternative migrations.
  • Azure Stack HCI (Azure Local) is now genuinely competitive for Microsoft-shop customers.
  • VMware vSAN remains the right answer when VMware investment is deep + integrated.
  • Total cost depends more on existing licensing posture than headline HCI prices.
Frequently asked

FAQs — Best HCI platform UK 2026

Selection

If we move off VMware, where do most UK customers go?

Most move to Nutanix. Some Microsoft-shop customers move to Azure Stack HCI. Very few move to OpenShift Virtualization or Proxmox at enterprise scale (yet). The skills market + partner depth weighs heavily.

Can we keep ESXi but move off vSAN?

Yes — you can run ESXi on Nutanix appliances (using AOS as the storage layer while keeping ESXi for compute). This is a less-common path but valid where the VM admin team is heavily ESXi-trained.

Migration

How long does VMware to Nutanix migration take?

100-300 VMs typically migrate in 8-12 weeks with parallel-run cutover. Critical workloads can be migrated live via Nutanix Move (Nutanix's included migration tool). See our migration paths guide.

Will our applications work on AHV without changes?

For 95%+ of standard enterprise workloads: yes, no app changes needed. AHV is a KVM-based hypervisor; VM portability via Nutanix Move handles the format conversion + VirtIO driver installation.

Pricing

Is Azure Stack HCI cheaper than Nutanix?

Often yes for Microsoft-shop customers, especially when Azure Hybrid Benefit is applied. The per-core-per-month model + integration with existing Azure spend can make Azure Stack HCI 15-25% cheaper than Nutanix on 5-year TCO. Always run a sized comparison.

Do you handle the commercial side of HCI procurement?

Yes — Servnet handles vendor negotiation, ELA structuring, and OEM hardware quoting across all three platforms. We'll model both perpetual hardware refresh cycles and subscription escalators so the 5-year cash position is honest.

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