How to reduce the cost of your VMware infrastructure

Since the start of virtualisation as we know it, two CPU sockets configurations were the obvious choice since it allowed to increase density and run more VMs on a single server, saving in the meantime money on the other components such as RAID controllers, network cads/HBAs, chassis, disks, you name... [Read More]

Don't bother with IPs, ping VMs

One thing that we all do quite regularly is pinging servers. In a medium/big environment there can be a lot of VMs and I can’t remember all the IP addresses or even the hostnames, which is annoying when I want to ping one of them. It’s still easy to find... [Read More]

How Power management impacts ESXi performance

Recently at work we’ve been noticing erratic performance on VMs eventhough the host’s CPU wasn’t running particularly hot. In order to check if there was contention I looked at the DRS chart and discovered that the CPU, not even hitting the 50% bar was not delivering half the resources. The... [Read More]

PowerCLI 6.5 broke my Powershell custom prompt!

This blog post applies only if you have a customized Powershell prompt. Function Prompt { … } in Microsoft.PowerShell_profile.ps1 My Powershell profile has a few different things including: A function to add the VMware core snapin and connect quickly to a vCenter. A function to customize... [Read More]

vSphere 6 host randomly disconnects from vCenter

I got a few email alerts recently from my vCenter regarding host not responding and disconnect at a random time. At first I tried to find a pattern for what could be potentially causing the issue and quickly realized that nothing funny was happening in vSphere-land. So I had a... [Read More]