I spent quite some time trying to get the OpenVPN Server working on the Mikrotik Router with a Linux client, It caused some pain and I didnt want others to go through that. I have therefore written this guide, taking you from certificate creation all the way to VPN connectivity. For this [...]Read more Mikrotik OpenVPN Server with Linux Client
What is TPS? Transparent Page Sharing (TPS) is a host process that leverage’s Virtual Machine Monitor (VMM) component of the VMkernel to scan physical host memory to identify duplicate VM memory pages. The benefits of TPS are that it allows a host to reduce memory usage so you can allow [...]Read more VMware Transparent Page Sharing TPS
One of the great virtualization and VMware features is the ability to take snapshots of a virtual machine. The snapshot feature allows an IT administrator to make a restore point of a virtual machine, with the option to make it crash consistent. This feature is particularly useful when [...]Read more VMware Large Snapshot Safe Removal
Recently I have seen an issue after upgrading some of our Dell R6xx hosts to 5.5 U2, they started showing FCoE in the storage adapters and booting took a really long time. I looked into this and found that the latest Dell ESXi image also includes Drivers and scripts that enable the FCoE [...]Read more Dell VMware 5.5 FCoE Errors
In this article I will be showing you how to add vCenter logs to a syslog server, I currently use GrayLog2 as its a great free syslog server and does everything that I require.Read more Add vCenter Logs to Syslog Server (GrayLog2)
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