What is ESXi arm?

esxi arm

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Shortly after VMworld 2020, the VMware ESXi ARM was released. It became an instant topic worldwide, and the ARM ESXi community was launched. ESXi ARM allows VMware ESXi hypervisor to be launched on ARM platforms such as:

  • Avantek workstation and server (Ampere eMAG);
  • Lenovo ThinkSystem HR330A and HR350A (Ampere eMAG);
  • SolidRun Honeycomb LX2;
  • Raspberry Pi (rPi) 4b model (4GB and 8GB only).

VMware’s ESXi on ARM architecture perfectly illustrates the industry’s shift from a small energy-efficient architecture to a more performance-efficient and energy-efficient ARM architecture.

Installing ESXi

Successful use of this technology requires appropriate hardware, a technical inspection license agreement, and VMware software. Numerous hardware vendors have bounced on the ARM bandwagon, so more hardware is now available than the first release of ESXi on ARM software in October 2020.

Virtual machines from the operating systems possess installation instructions to quickly sort the guest interrupt controller virtualization process on ARM servers. vCenter server, on the other hand, and ESXi host client on the other, aim for existing virtual machines.

The latest release of ESXi on ARM is version 1.8. VMware allows users to test new technology concepts and give feedback to the vendor to deliver a more refined product.

VMware goals with ARM

It was interesting to realize where VMware is heading, especially its uses on ARM Fling and the advantages of ARM over traditional x86 servers.

One of the advantages is the lower consumption and cooling, which makes these devices completely ideal for edge devices in the likes of firewalls or security devices that work with ESXi as the primary operating system. VMware already had the ARM version of ESXi last year, but this year, with a new version of the Rasberry Pi 4 with 4 Gb of RAM, and so on.

Another hardware present on the stand was a NIC server, each with RAM and CPU, which acted as a microservice on its own.

Connecting to vCenter, vMotion, cluster resource configurations has everything in the “normal” vSphere. Cloud environments like Amazon can take advantage of the ARM platform and provide savings of up to 40% less (cooling, consumption) than traditional x86 platforms.

They build cloud environments with ESXi ARM Fling to save you good money with the same long-term performance level.

The creation of ESXi ARM

ESXi on ARM is an ARM-based edition of VMware ESXi hypervisor. ESXi on ARM software allows hypervisor-based software with the same feature set as the non-ARM version to run on x86-based architecture.

There is a selection of supported hardware, though it is an experimental release. This is why admins must agree to a Technical Preview License before downloading the software.

Energy efficiency and performance are the main factors leading hardware manufacturers to create ARM-architecture-based hardware.

The ARM architecture is more energy-efficient than x86 CPU architectures, so many hardware vendors use it to provide more energy-efficient servers for data centers and edge infrastructure. Its primary utilization case is ARM workload virtualization.

ARM processors do have a higher performance per watt than x86 CPUs. It makes them suitable for battery-operated or solar-powered devices where energy efficiency is an indispensable feature.

These ARM processors are located in many consumer devices such as smartphones or tablets, so it is logical for VMware to provide an ESXi-based hypervisor for ARM.

Hardware requirements for ESXi on ARM

Successful use of ARM ESXi requires appropriate hardware. There are different specifications for data centers, near or far edge. Some hardware options have only experimental support.


Ampere Computing systems based on eMAG, Ampere Computing Altra-based systems, Ampere Computing Altra-based forms from Oracle Cloud Infrastructure or ARM Neoverse N1 System Development Platform.

Near edge

SolidRun Honeycomb LX2, SolidRun MacchiatoBin or CN9132 EVB, or Nvidia Jetson AGX Xavier software kit.

Far edge

4GB or 8GB model of Raspberry Pi 4b (8GB recommended, USB 3.0 for ESXi / VMFS recommended), Raspberry Pi 400, Nvidia Jetson Xavier NX Developer Kit, LS1046A-based NXP Freeway, LSAbased10 NXP RDB, and Socionext SynQuacer Developer box.

ESXi ARM deployment process

The ESXi hypervisor needs storage. Register on the VMware website and download the ISO file to run ESXi Fling on ARM. If administrators use a Raspberry Pi, they need a firmware microSD card and a USB stick to act as a VMware installer. There is alternative documentation that administrators can download as a PDF for step-by-step setup configuration for different types of hardware.

Yet, administrators need a VMware installation destination. It is attainable to install ESXi on a microSD card, but this option is not officially supported. Administrators are likely to consider a USB-based offer or network offers, such as PXE or iSCSI.

ESXi on ARM use cases

VMware may, in the future, release a fully supported ESXi of ARM, which will not only work with ARM software but also have support from commercial vendors. For example, administrators could deploy two remote edge devices running ESXi and create a small cluster.

This setting can be operated remotely, such as a telecommunications transmitter, wind turbine, or another device with critical edges. The administrator runs vMotion in the VM up to the second ESXi node. The administrator can then maintain the infrastructure without excluding the service that is important to the mission.

Once the administrator has completed the maintenance, it can enable fault-tolerance on that VM, so if any of the ARM hosts fail, there is no service interruption. The configuration must be mature for these uses and have the equivalent features like VMware ESXi.

VMware currently only supports clean installs of ESXi Fling on ARM without upgrades. The upgrade is possible if the administrator makes clean equipment that saves the original data repositories and VMs, and then registers the VMs back in the user interface. But this is a long process that every administrator would perform on every device.


In 2020, VMware released the first experimental version of ESXi for ARM processors. The next thing to note is that when ESXi transmits to ARM an essentially technical task not so much later, ESXi – a more extensive coded database with a multitude of specialized cargo, but also after that semantics, in the beginning, the process begins.

As reported in VMware, it needed backup testing and upgrades to guarantee that ESXi would work on both ARM and x86 platforms, keeping up with the highest ESXi standards.

ESXi ARM – this update includes several new features and components and requires a fresh install. According to the company, the update is an evaluation program aimed at enterprise architects considering virtualizing workloads on ARM and development and test teams looking for a way to deploy their workloads on ESXI ARM and professionals who want to explore the possibilities.