Last week at PEX I had a discussion around migrating to a Distributed Switch (VDS) and some of the challenges one of our partners faced. During their migration they ran in to a lot of network problems, which made them decide to change back to a regular vSwitch. They were eager to start using the VDS but could not take [...]

** Disclaimer: This is for educational purposes, please don’t implement this in your production environment as it is not supported! ** Last week I received a question and I figured I would dive in to it this week. The question was if it is possible to fail-over LUNs using VMware Site Recovery Manager (SRM) which are not part of the Cluster which [...]

I had a question today from someone who asked if there was any point in enabling SIOC (Storage IO Control) when you have NIOC (Network IO Control) enabled and configured. Lets start with the answer: Yes there is! NIOC controls traffic on a single NIC port level. In other words, when you have 10GbE NIC ports and vMotion, VMs and [...]

When I joined Tech Marketing in February of this year my first task literally was the ESX System Analyzer. I was part of the team who developed the specs and test the app, but the main driving force behind the tool was my colleague Kyle Gleed (@VMwareESXi). The tool / fling was designed specifically to help people migrate from ESX [...]

My colleague Cormac posted an article about this already, but I figured it was important enough to rehash some of content. As many of you have experienced there was an issue with ESXi 5.0 in iSCSI environments. Booting would take a fair amount of time due to the increase of the amount of retries in the case creating a connection [...]

Today Rob de Veij released an update of his excellent tool called RVTools. We are up to version 3.2 already. You can find the update on the RVTools website. RVTools is an essential tool for every vSphere Admin. It allows you to report on the most important aspects of your virtual infrastructure, but probably the most important ones are limits [...]

A couple of weeks ago I was contacted about an issue with vSphere 5.0. When a VM Storage Profile was disabled / enabled it looked like HA and DRS got disabled as well. After diving in to the problem it appeared that both HA and DRS were still working. It seems that some how the vSphere Client thinks it is [...]