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NVMe Tiering in vSphere 8.0 Update 3 is a Homelab game changer!

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As someone who is always on the lookout for interesting and clever ways to make the most out of your vSphere homelab investment, I was surprised there has not been more noise about the new NVMe Tiering capability in vSphere 8.0 Update 3!?

NVMe Tiering is currently in Tech Preview and it enables ESXi to use an NVMe device as a secondary tier of memory for your workloads, which IMHO makes it one of the killer features in vSphere 8.0 Update 3, especially with some interesting implications for Homelabs!

As the old saying goes, a picture is worth a thousand words ...


Picture on the left shows a system with 64GB of memory (DRAM) that is available before enabling NVMe Tiering and on the right, the amount of memory that is available after enabling the NVMe Tiering which is whopping 480GB! ?

Note: As of VCF 9.1, there is a more streamline method for enabling NVMe Tiering, please see this blog post for more details as the previously method no longer works.

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Quick Tip - Disable network traffic monitoring (promiscuous) UI prompt in VMware Fusion

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While working on some demos planned for my VMware Explore session, Tech Deep Dive: Automating VMware ESXi Installation At Scale [CODEB1574LV], I kept getting this network monitoring prompt when powering up my Nested ESXi VM running in VMware Fusion.


Since Nested ESXi requires the use of promiscuous mode (for inner-VM networking), you will be prompted to approve of the request or networking will be disabled. For demo purposes, you probably do not want this prompting and I was wondering if this could be disabled. After a quick ping in our internal VMware Hosted Google Space, I learned that we can disable the UI prompt by adding a VMX option to the VM.

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Incorrect guestOS type for Nested ESXi causes vCLS issues with VMware Cloud Foundation (VCF) Holodeck Toolkit

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Several months back, I started noticing an increase number of folks reporting problems powering on their vSphere Cluster Services (vCLS) VM when using the VMware Cloud Foundation (VCF) Holodeck Toolkit solution and the following workaround can be applied, which came directly from the Holodeck developers.

While a workaround exists including vCLS script located at C:\VLC\VLC-Holo-Site-1\vclsfix, it was very puzzling because this seems to only happen with the Nested ESXi VMs and the VCF Holodeck Toolkit and it was NOT observed when deploying a regular Nested ESXi environment, but I never took a closer look to see why that might be.

A few weeks back, I recieved an email from Mike Foley (former vSphere HA and vCLS PM), I came to learn the reason folks using the VCF Holodeck Toolkit was seeing this problem and it was specific to that solution due to how the guestOS was configured for the Nested ESXi VMs.

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