How to deploy a VMware vSAN Witness Appliance 7.0.x

After upgrading all of your ESXi hosts to v7.0, it is time to either upgrade or deploy a new witness appliance and introduce it to the cluster. Upgrading witness appliance is done the same way as every other ESXi host, but since that procedure can initiate a known bug where witness appliance loses embedded witness appliance license and switches to evaluation license, you might end up deploying a new appliance anyway. Continue reading “How to deploy a VMware vSAN Witness Appliance 7.0.x”

7 important configuration files on ESXi server

Here is the first of the articles in “7” series. These articles will cover 7 important configuration files on an ESXi server, 7 useful troubleshooting commands, 7 tools to monitor core ESXi performance and 7 useful log files that can help you.

Today I will cover 7 important configuration files on an ESXi server. Please remember to take backup of any configuration files before changing any settings within the file!

  1. /etc/vmware/esx.conf – This file holds information about sotrage, network and hardware.
  2. /etc/vmware/hostd/vmInventory.xml – Virtual machine inventory list update on the ESXi server.
  3. /etc/vmware/hostd/authorization.xml – This file holds authorization for connection between ESXi server and vCenter server
  4. /etc/vmware/vpxa/vpxa.cfg –  Connectivity configuration for ESXi server and vCenter server
  5. /etc/vmware/vmkiscsid/iscsid.conf – iSCSI configuration file
  6. /etc/vmware/fdm – FDM configuration with clusterconfig, host list and VM metadata
  7. /etc/vmware/license.cfg – License configuration file for ESXi server.

How to build latest VMware ESXi ISO image for Intel NUC 4th generation

When it comes to building cheap and reliable home lab Intel NUC computers are huge success. Their low power consumption and small footprint makes them perfect for almost any kind of home lab, including building a VSAN lab. Recently I ran into the issue where I needed an additional network card for my NUC. I needed to transfer vCenter server from iSCSI storage, to a VSAN datastore on the same host. Continue reading “How to build latest VMware ESXi ISO image for Intel NUC 4th generation”

All Flash vSAN – How to tag an SSD disk as storage tier

Traditional vSAN is the combination of cache component based on flash storage and capacity layer based usually on traditional magnetic disks. Since v6.0, vSAN supports All Flash storage. In other words, both the caching and the storage layer can be made up from flash based storage, like SSD is. Here I will cover how to use the command line to perform device tagging. For GUI version, please refer to the article in the section Related Posts on the bottom of this page. Continue reading “All Flash vSAN – How to tag an SSD disk as storage tier”

Upgrading to VMware ESXi 5.5 Update 1 fails due to conflicting VIBs

If you have installed updated version(s) of network and/or storage HBA’s at any time, you will find yourself hitting the wall one you want to upgrade your ESXi server to v5.5 Update 1. Reason for that is that the newer driver(s) are not part of the upgrade installation, and as such it must be updated manually before you can upgrade your ESXi server. When you attach custom ISO in your Update Manager, and scan host for upgrades, you will be presented with the result “Incompatible” and in the error detail, there will be message: Continue reading “Upgrading to VMware ESXi 5.5 Update 1 fails due to conflicting VIBs”