Category Archives: VMware

Understanding Historical “CPU Ready” statistics in VMware vCenter server

One of the most confusing performance metrics in vCenter server is the CPU “Ready” metric. Part of the reason is that this metrics shows up as a “Summation in milliseconds”.  In additional to that the threshold changes depend...

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Boot Windows Server 2012 on ESXi 4.1

I needed to create a Windows Server 2012 R2 on one of our older ESXi hosts and quickly found out that ESXi 4.1 does not support Server 2012 as a guest OS.  The newest guestOS supported is Windows 2008 R2. … Continue reading →...

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iPerf Network performance comparison between Virtual Machines on ESXi6

I finally found some time to run a series of iPerf network performance tests between Windows server 2008 R2, Windows 2012 and a Linux Debian virtual machines. The tests compare bandwidth throughput between vmxnet3, e1000 going through a 1Gbit and &he...

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Manually running sysprep.xml file generated by VMware vCenter

When a user deploys a VM from a template, there is an option to customize the virtual machine by attaching a customization spec to the VM.  What happens in the background is that the virtual machine is cloned from a … Continue reading →...

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SQL Script to create a vCenter 6 database without granting dbo permissions

While installing vCenter 6 I ran into an issue where the following error showed up “The user associated with the DSN has insufficient privileges.  Please provide sufficient privileges for the user by granting the user the following permissio...

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Easy way to create a portable version of the vSphere Client

I recently stumbled on a very easy way to create a portable version of the vSphere client without using Thinapp.  The process extracts the contents of the msi installer that you can copy into a folder and take along with … Continue reading &r...

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Adding Realtek R8168 Driver to an ESXi 6.0 ISO

As part of my home lab I installed ESXi 6.0 on one of my older i5 Desktops, the PC has a Realtek 8168 network card built into the motherboard.  I recently tried to upgrade it to ESXi 6.0 but it … Continue reading →...

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Set up and troubleshoot SNMP on an ESXi 5.5 host

Here are some quick notes how to troubleshoot and set up SNMP on an ESXi host. The below also includes how to install snmpwalk and request info from an snmp server. STEPS HOW TO PROPERLY SET UP SNMP ON AN … Continue reading →...

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How to configure and troubleshoot ESXi Core Dump Collector

Notes on setting up and troubleshooting VMware ESXi Dump Collector: Error: Starting network coredump from 192.168.11.230 to 192.168.11.12 NetDump: FAILED: Couldn’t attach to dump server at IP 10.168.11.12 If you are getting the above error then...

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