What is NUMA? Most modern CPU’s, Intel new Nehalem’s and AMD’s veteran Opteron are NUMA architectures. NUMA stands for Non-Uniform Memory Access. Each CPU get assigned its own “local” memory, CPU and memory together form a NUMA node (as shown in the diagram below). Memory access [...]Read more NUMA and vNUMA made simple!
In this article I am going to take you through what a Distributed switch or dvSwitch is and how it is used, I will also talk about why backing them up is so important, then show you how to backup by hand and with the help of some PowerShell scripts I have created for you.Read more VMware Distributed Switches (dvSwitch)
It is my experience that resource pools are nearly a four letter word in the virtualization world. Typically I see a look of fear or confusion when I bring up the topic, or I see people using them as folders. Even with some other great resources out there that discuss this topic, a lack of […]Read more Understanding Resource Pools in VMware
I recently required a syslog server that was easy to use with a web interface to monitor some customers firewalls. I had been looking at Splunk but due to the price of this product it was not a viable option for what I required. After a little searching I came across Graylog2 which is an […]Read more Graylog2 CentOS Installation
By default Teamspeak 3 uses a SQLite database, most people tend to use this however for those of us that prefer MySQL there is a way to change it. Follow this small tutorial to create a Teamspeak 3 Server on CentOS 6.x using a MySQL Database!Read more Teamspeak 3 with MySQL on CentOS 6.x (22.214.171.124 Onwards)
Over the past couple of weeks I have spent some time working with VMware vCloud Director 5.1. I will also be producing multiple other guides for vCloud Director as I use it more over the coming months. One issue that we have hit a few times was the vCD cell stopped working properly (Multi-cell [...]Read more vCloud Director and vCenter Proxy Service Failure
About NFS (Network File System) Mounts NFS mounts allow sharing a directory between several servers. This has the advantage of saving disk space, as the directory is only kept on one server, and others can connect to it over the network. When setting up mounts, NFS is most effective for [...]Read more How to setup an NFS mount on CentOS 6
I have recently had an issue with people leaving snapshots on VM’s for too long causing large snapshots and poor performance on Virtual Machines. I decided that I needed a way of reporting on which virtual machines had snapshots present, when they were created and how big they are.Read more Email Report Virtual Machine’s with Snapshots