Tag Archives: 6.5 - Page 2

ESXi 6.5 Feburary 2017 Patch with NSX Support (Build 4887370)

VMware has published a patch for ESXi 6.5 and the corresponding vCenter Server version. This patch [..l}] and is the first 6.5 release to support VMware NSX.

Product: VMware ESXi 6.5
Release date: February 2, 2017
Patch: ESXi650-201701001
Build: 4887370
Links: KB2147869 | Download Read more »

How to add AD Authentication in vCenter 6.5/6.7

The vCenter Server has an internal user database that allows you to add and manage users with the vSphere Web Client. Users management and Single Sign-On is provided by the Platform Service Controller which is available since vSphere 6.0. In a large environment, you might want to connect your virtualization infrastructure to a centrally manage Active Directory.

This article explains how to add AD authentication in vSphere 6.5 and how to get the "Use Windows session authentication" checkbox to work with the enhanced authentication plugin. This works for both, the vCenter Server 6.5 installed on a Windows Server and the vCenter Server Appliance (vCSA).

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How to Join the vCSA 6.5/6.7 to an Active Directory Domain

In vSphere 6.5 the underlying operating system from the vCenter Server Appliance (vCSA) has been changed to VMwares PhotonOS. With the new OS, you can still join an Active Directory domain to comply with company policies, or if you want to use windows session authentication. Joining an Active Directory domain is included in the infrastructure node configuration which is part of the Platform Services Controller. Please verify standard AD requirements like time synchronization and naming prior to joining a domain.

If you want to log in with the "Windows session authentication" checkbox, you have to add the appliance running the Platform Services Controller (PSC) to the domain. For embedded deployments, join the appliance running both, the vCenter and the PSC to the domain.

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The Physical block size reported by the device is not supported

Since my ESXi hosts are upgraded to VMware vSphere ESXi 6.5, the vmkernel.log is constantly spammed with warnings reporting that the physical block size from my LUNs, provided by a FreeNAS storage, have an unsupported block size.

WARNING: ScsiPath: 4394: The Physical block size "131072" reported by the path vmhba64:C0:T4:L0 is not supported. The only supported physical blocksizes are 512 and 4096
WARNING: ScsiDeviceIO: 6462: The Physical block size "131072" reported by the device naa.6589cfc0000000572b71f35019e9c31f is not supported. The only supported physical blocksizes are 512 and 4096

I'm using FreeNAS-9.10.2 with iSCSI LUNs backed by a ZFS volume. The physical blocksize is reported as the ZFS recordsize which is 128K by default. Read more »

ESXi 6.5 - ESXCLI Command Mindmap

esxcli-splashIn vSphere 6.5 the command line interface esxcli has a new namespaces and 93 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 6.5 hosts. If you've installed additional software you might see more namespaces. I've also created mindmaps for ESXi 5ESXi 5.5 and ESXi 6.0.

ESXCLI in version 6.5 has 16 namespaces: Read more »

VMware vSphere 6.5 Configuration Maximums Changes

VMware vSphere 6.5 offers increased scalability. You can see a comparision against all previous verisons at my ESX and vCenter Configuration Maximums page. Changes in VMware vSphere 6.5 are:

Virtual Machine and Host Maximums

vSphere 6.5 vSphere 6.0 
RAM per virtual machine 6 TB 4 TB
Video memory per virtual machine 2 GB 512 MB
Logical CPUs per host 576 480
Number of total paths on a server 2048 1024
FC LUN ID 16383 1032
Volumes per host 512 256

vCenter Server Maximums

vSphere 6.5 vSphere 6.0
Hosts per vCenter Server 2000 1000
Powered on virtual machines 25000 10000
Registered virtual machines 35000 15000
Number of host per datacenter 2000 500
Virtual machines per cluster 8000 4000
Hosts per distributed switch 2000 1000


VMware ESXi 3.5 - 6.5 Hypervisor Size Comparison

VMwares bare-metal hypervisor ESXi is in the market for almost 9 years now. During that time it has been continuously refined and added with new features. Since vSphere 5.0, the hypervisor size is very constant and has not increased severely. In this post I am going to have a look at how much the hypervisor footprint has been changed from ESXi 3.5 to ESXi 6.5.

  • ESXi 3.5 - 46,01 MB
  • ESXi 4.0 - 59,99 MB
  • ESXi 4.1 - 85,19 MB
  • ESXi 5.0 - 132,75 MB
  • ESXi 5.1 - 125,85 MB
  • ESXi 5.5 - 151,98 MB
  • ESXi 6.0 - 154,90 MB
  • ESXi 6.5 - 135,39 MB


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New ESXCLI Commands in vSphere 6.5

esxcli-65In vSphere 6.5 the command line interface esxcli has been extended with new features. This post introduces the new and extended namespaces. Remarkable changes in esxcli version 6.5 are:

  • USB passthrough configuration
  • NVMe device status and configuration
  • VIB signature verification
  • Storage adapter capabilities
  • Device capacity information
  • VMFS6 reclaim configuration
  • vSAN iSCSI configuration
  • Physical nic coalesce queue configuration
  • WBEM configuration


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Homelab - Will ESXi 6.5 run on Intel NUC?

esxi-on-5th-gen-NUC5i3MYHEVMware vSphere ESXi 6.5 is here and while you should wait to 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 6.5 will run on 5th and 6th Gen NUCs just as ESXi 6.0 U2

Long answer...

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PowerCLI Script to verify ESXi 6.5 support

VMware vSphere 6.5 is here and a lot of systems are no longer supported. Use the following script to verify that ESXi hosts in your environment are certified for running ESXi 6.5. The script generated the following output for all hosts connected to the vCenter.

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