Tag Archives: 6.7

Tips for using USB Network Adapters with VMware ESXi

Running Intel NUCs and other SFF systems with ESXi is a proven standard for virtualization home labs. One major drawback is that most of the available SFF systems only have a single Gigabit network adapter. This might be sufficient for a standalone ESXi with a few VMs, but when you want to use shared Storage or VMware NSX, you totally want to have additional NICs.

This article explains some basics to consider when running USB-based network adapters with ESXi.

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ESXi VMKUSB NIC Fling adds support for 2.5GBASE-T Adapters

The USB Native Driver Fling, a popular ESXi driver by Songtao Zheng and William Lam that adds support for USB-based Network Adapters, has been updated to version 1.6. The new version has added support for RTL8156 based 2.5GBASE-T network adapters.

Multi-Gigabit network adapters with 5GBASE-T are available for a while, but those 5GbE adapters cost about $100 USD. The new driver allows the usage of 2.5GbE adapters that are available for as low as $25 USD. The driver was released yesterday, and luckily I already own a bunch of 2.5GbE adapters, so I could give it a test drive immediately.

CableCreation USB 3.0 to 2.5 Gigabit LAN Adapter (CD0673)

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Connect and work with the vCSA Embedded vPostgres Database

This article explains how to connect and work with the embedded vPostgres Database of a vCenter Server Appliance version 6.5, 6.7, and 7.0.

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Demystifying vCenter Version and Build Number Mismatches

Have you ever wondered that the VMware vCenter Server build number mentioned in Release Notes does not match with the build number displayed in the vSphere Client? There are many different versions and build numbers used through the product. How the numbering works is different from Releases to Release. Here is an example of version numbers used in vSphere 6.7:

  • vCenter Server 6.7 U3f
  • Appliance Version: 6.7.0.43000
  • Windows Application Version: 6.7.0.31288
  • ISO/Installer/Update Build: 15976714
  • Appliance Build Number: 15976728
  • Windows Build Number: 15976721

In this article, I am going to explain where these numbers are used and also how the numbering differs from vSphere Release to vSphere Release (eg. vSphere 6.7 numbering standards differ from vSphere 6.5).

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vCenter Service Appliance 6.7 Tips and Tricks

VMware is moving their vCenter Server from Windows to the Linux based Photon OS. The following tips and tricks might come handy when working with the vCenter Service Appliance 6.7:

  • Enable SSH
  • File Transfer with SCP/SFTP
  • Public Key Authentication
  • Disable or Increase Shell Session Timeout
  • Password expiration
  • Reset vCenter Server Appliance 6.7 root password
  • Create a Backup Job
  • Certificate Warning

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Free ESXi 6.7 - How to Download and get License Keys

vSphere 6.7 has been released and as known from previous versions, VMware provides a free version of their Hypervisor ESXi for everyone again. The license key can be created for free at VMware's website. It has no expiration date. The binaries you will receive as "Free Hypervisor" are 100% identical to the paid version but with some software limitations.

Tech Specs and Limitations

  • No commercial support (But great community support)
  • Free ESXi cannot be added to a vCenter Server
  • Some API functionality is missing
  • No physical CPU limitation
  • Number of logical CPUs per host: 480
  • Maximum vCPUs per virtual machine: 8

Other limitations like the 32GB Memory or 2 CPU Socket limit are no longer in place.

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VMware ESXi 6.7 - Hardware not yet certified for upgrade

Double check your vendor support when updating ESXi hosts from to vSphere 6.7. Some systems have not been certified by their vendor yet. The following servers were supported in vSphere 6.5 but are according to VMware's HCL not yet supported in vSphere 6.7.

Your server is listed and you want to upgrade?

  • Usually, the list gets smaller a couple of weeks after a new vSphere version has been released. I will update this post when I notice changes.
  • Not supported does not say that it does not work.
  • Servers get certified by their vendor, not VMware. If you want a server to get certified, ask your vendor.
  • Vendor support matrices sometimes differ from VMware HCL. Please ask your vendor or VMware whether you are allowed to upgrade.
  • The list has been created with the help of my HCL in JSON Format.
  • Follow the comments to get notified of updates.
  • Did I miss something? Please comment.

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VMware vSphere 6.7 Configuration Maximums Changes

VMware vSphere 6.7 offers increased scalability. You can see a comparison against all previous versions at my ESX and vCenter Configuration Maximums page. Changes in VMware vSphere 6.7 are:

Virtual Machine Maximums

vSphere 6.7 vSphere 6.5 vSphere 6.0 
NVDIMM controllers 1 N/A N/A
Non-volatile Memory 1 TB N/A N/A
Virtual SCSI targets per virtual SCSI adapter 64 15 15
Virtual SCSI targets per Virtual Machine 256 64 64
Virtual RDMA Adapters per Virtual Machine 1 N/A N/A

ESXi Host Maximums

vSphere 6.7 vSphere 6.5 vSphere 6.0 
Maximum Non-volatile memory per host 1 TB N/A N/A
Logical CPUs per host 768 576 480
Maximum RAM per host 16 TB 12 TB 12 TB
Number of total paths on a server 4096 2048 1024
LUNs per server 1024 512 256
Volumes per host 1024 512 256

Fault Tolerance Maximums

vSphere 6.7 vSphere 6.5 vSphere 6.0 
Virtual CPUs per virtual machine 8 4 4
Virtual Memory per virtual machine 128 GB 64 GB 64 GB

 

vCenter Server Maximums

vSphere 6.7 vSphere 6.5 vSphere 6.0 
Hosts in linked vCenter Servers 5000 4000 4000
Powered on virtual machines in linked vCenter 50000 30000 30000
Registered virtual machines in linked vCenter 70000 50000 50000

Homelab - Will ESXi 6.7 run on Intel NUC?

esxi-on-5th-gen-NUC5i3MYHEVMware vSphere ESXi 6.7 is here and while you might want to wait before you upgrade your production, it's time to explore the new features in your Homelab. I've received a few questions on whether it is safe to upgrade.

Short answer
ESXi 6.7 will run on 5th, 6th and 6th Gen NUCs just as ESXi 6.5

Long answer...

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ESXi 6.7 - ESXCLI Command Mindmap

In vSphere 6.7 the command line interface esxcli has 62 new commands. Esxcli is a complete set of commands that you can use for troubleshooting, configuration or kickstart files. I have created and printed a mindmap to navigate through the namespaces more quickly. This post covers only basic namespaces, available on all ESXi 6.7 hosts. If you've installed additional software you might see more namespaces. I've also created mindmaps for ESXi 5.1ESXi 5.5ESXi 6.0 and ESXi 6.5.

ESXCLI in version 6.7 has 15 namespaces: Read more »