One click upgrade – Nutanix Operaiting System upgrade

The biggest operational pain point in standard 3 Tier architecture was (and still is) maintenance. Regardless if it was Hypervisor upgrade\update or firmware update. As for now, to perform upgrade usually one has to:

  • go vendor or vendors website, check hardware vs firmware vs hypervisor for all components
    • BIOS version
    • HBA firmware and drivers
    • NIC firmware and drivers
    • supported hypervisor version
    • and so on and so on
  • download all necessary binaries
  • create dependency list
  • install one by one from several different management consoles

At the end if one is lucky and all went well mission is accomplished. Question is – how much time is your operational\engineering time spent on such trivial task like this ? Answer is – definitely to much  🙂 , days and days of preparation work, plus next few days to to work.

That’s why Nutanix, in the NOS 4.X release bring one of the best features – One click upgrade. Where from single console you can upgrade not only Nutanix Operating System (NOS) but also:

  • Hypervisor
    • ESXi
    • Hyper-V
    • KVM – gets upgraded while NOS upgrade
  • Firmware
    • disks firmware – current release
    • NIC firmware – in the future releases
    • BIOS – in the future releases
    • IPMI firmware – in the future releases
  • Tools
    • NCC – Nutanix cluster check

All above actions with ZERO downtime for virtual machines.

Heaving Nutanix you do not have to worry about compatibility matrix – we will do it for – what you have to do is just press few buttons and enjoy orchestrated upgrade 🙂

One click upgrade – Nutanix Operaiting System upgrade

  • Log in to Prism UI
  • Click on Gear button and upgrade software
  • if your Nutanix cluster has internet connectivity – hit Download button or you can upload tarball with new version. All supported version are available on
Nutanix upgrade 4.1

Nutanix upgrade 4.1

  • Once download finished, click Upgrade button. You will find two sub-buttons, PreUpgrade and Upgrade Now. Pre-Upgrade will do check of all prerequisites upfront the upgrade.
Nutanix Upgrade NOS

Nutanix Upgrade NOS


  • After, just wait and relax, software will do the job for you :-). One by one CVM will get upgraded and restarted – no need to worry about anything.
Nutanix upgrade process

Nutanix upgrade process

If cluster is large enough and you have some spare time – you can play with build-in game 🙂

Nutanix buildin Game

Nutanix build-in Game

An average upgrade time takes from 3 to 4 minutes per node. Upgrade speed might vary depends on hardware specs.

Nutanix upgrade complete

Nutanix upgrade complete


Artur Krzywdzinski

Artur is Consulting Architect at Nutanix. He has been using, designing and deploying VMware based solutions since 2005 and Microsoft since 2012. He specialize in designing and implementing private and hybrid cloud solution based on VMware and Microsoft software stacks, datacenter migrations and transformation, disaster avoidance. Artur holds VMware Certified Design Expert certification (VCDX #077).