vSAN 6.6 vMotion Basic Unicast Connectivity Health Check Fails

After upgrading my lab to vSAN 6.6, I noticed that the newly introduced vMotion health check (vSAN Cluster > Monitor > vSAN > Health > Network) showed up as failed for the following checks:

  • Failed - vMotion: Basic (unicast) connectivity check
  • Failed - vMotion: MTU check (ping with large packet size)

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VMware vSAN 6.6 Upgrade Steps

The VMware vSAN 6.6 has been released today. In this post, I am going to run through the 3 steps to upgrade vSAN 6.5 to vSAN 6.6. Upgrading Virtual SAN is a multistage process, in which you must perform the upgrade procedures in the order described here:

  1. Upgrade vCenter Server to version 6.5.0d
  2. Upgrade ESXi Hosts to version 6.5.0d
  3. Upgrade the vSAN on-disk format to version 5.0

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VMware vSAN 6.6 GA - Download Links Available

Today VMware has made the bits for vSAN 6.6 available for everyone to download.

What's New

  • Unicast - In vSAN 6.6, cluster communication has been redesigned to use unicast traffic. Multicast is no longer required on the physical switches to support the vSAN cluster.
  • Encryption - vSAN supports data-at-rest encryption of the vSAN datastore. When encryption is enabled, vSAN performs a rolling reformat of every disk group in the cluster.
  • Enhanced Stretched Clusters with Local Failure Protection - Previously, vSAN's was able to provide a fully active-active, stretched cluster. vSAN 6.6 takes this a step further, allowing for storage redundancy within a site AND across sites at the same time.
  • Site Affinity for Stretched Clusters - A new feature for vSAN 6.6 Stretched Clusters is the ability to configure site affinity.
  • Configuration Assist and Updates - New Configuration Assist and Updates pages allows to check the configuration of your vSAN cluster, and resolve any issues.
  • Resynchronization throttling - IOPS used for cluster resynchronization can be throttled to prevent performance bottlenecks.
  • vSAN Health Command Line Tool - A new esxcli command allows to check vSAN health from the command line (esxcli vsan health).
  • Degraded Device Handling - vSAN 6.6 provides a more proactively stable environment with the detection of degraded and failing devices.

Additional Information

PowerCLI Script to get ESXi Network/Storage Firmware and Driver Version

For a healthy vSphere virtualization infrastructure and to receive support from VMware it is important to verify that IO devices are listed in VMwares Compatibility Guide/Hardware Compatibility List (HCL) with their correct driver and firmware version. Gathering firmware details and comparing them to the HCL is very time-consuming. I made a small script that automatically gathers the following information:

  • IO Devices (NICs, HBAs and RAID Controllers)
  • Driver Version
  • Firmware Version
  • Official HCL Link

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Intel NUC - Blank Manufacturer and Model in ESXi Summary Tab

Intel does not preconfigure SMBios information for their NUCs. When you install VMware ESXi, Manufacturer and Model information in the Summary tab are missing. Intel provides a tool for system integrators that allows customizing the BIOS.

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VMware Homeserver - ESXi on 7th Gen Intel NUC (Kaby Lake)

Intel's 7th Gen NUC is currently rolled out and after a resolved issue with the NIC driver, it's time to take a look at their capabilities as homeserver running VMware ESXi. NUCs are not officially supported by VMware but they are very widespread in many homlabs or test environments. They are small, silent, transportable and have a very low power consumption, making it a great server for your homelab. I've posted a preview of the new models about 2 months ago. Gen7 NUCs are available with i3, i5 and i7 CPU.

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What's inside VMware vSphere 6.0 Update 3

VMware has released vSphere 6.0 Update 3. That update only contains minor changes, no noteworthy new features have been added. Together with 6.0 U3, the following product updates were released today:

If you want to get notified about updates and new products, subscribe to my vTracker RSS Feed. Read more »

VMware ESXi 6.5 - IO Devices not certified for upgrade

vmware-hcl-65Beside Server Hardware, also double check if your IO Devices (eg. NIC, HBA,..) are supported when updating ESXi hosts from VMware vSphere 6.0 to 6.5. The following devices were supported in vSphere 6.0 but are according to VMwares HCL not (yet) supported in vSphere 6.5.

  • Not supported does not say that it does not work.
  • The list has been created with the help of my IO-Devices HCL in JSON Format.
  • Did I miss something? Please comment.

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vCenter Service Appliance 6.5 Tips and Tricks

The following tips and tricks might come handy when working with the vCenter Service Appliance 6.5:

  • Enable SSH
  • File Transfer with SCP/SFTP (WinSCP)
  • Login with Public Key Authentication
  • Disable or Increase Shell Session Timeout
  • Reset vCenter Server Appliance 6.5 root password
  • VIMTop
  • Certificate Warning

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Script to add vSphere 6.5 VMCA Root Certificate to Trusted Certs Store

When running vSphere 6.5 deployments in default (recommended) mode, VMware Certificate Authority is its own root certificate authority. Everything fine and secure with this configuration, but your browser displays a warning because the root certificate is not trusted.
there-is-a-problem-with-this-security-certificate

I made a little script (VBS) that pulls the CA certificate from a vCenter Server or Platform Services Controller and adds it to the local trusted root certificates store. When the root CA is trusted, browser warnings are gone.

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