KB 2050288: vCenter Log Export – NMI reset of Responsive Windows Server 2012 or Windows 8 VM

Here is an Operational Risk that should be mitigated with an update of your Operational Procedures and Administrator training/awareness.  This exact issue impacted my organisation recently. Continue reading KB 2050288: vCenter Log Export – NMI reset of Responsive Windows Server 2012 or Windows 8 VM

Host Design – Scale Up or Scale Out?

When you first start learning about virtualisation as an architect, the first design question you will learn is: “Scale Up or Scale Out?”  The basis of the question is quite simple: “Do I buy a small number of hosts with a large amount of resources, or do I buy a large number of hosts with a small amount of resources?”  Simply put: “Can I afford to put all of my eggs in one basket?”  The answer to that question varies, depending on the business requirements and constraints of your customer. Continue reading Host Design – Scale Up or Scale Out?

End-to-End Network QoS for vSphere 5.1 with Cisco UCS and Nexus

This article builds upon the white papers and blogs that are available (listed below) and provides a VCDX-style guide to design decisions that need to be considered for End-to-End Network Quality of Service for vSphere 5.1 with the Cisco Unified Computing System (UCS) and Cisco Nexus switches. Continue reading End-to-End Network QoS for vSphere 5.1 with Cisco UCS and Nexus

Tech101 – VMware vSphere ESXi

During my VCDX journey, I searched long and hard for a diagram that showed the components of VMware vSphere ESXi in a “big picture” to enhance my understanding.  The closest I could find was in the VMware vSphere: Optimise and Scale training manual (page 66 – Image also here Section 4.1), but it lacked detail.  So I collated all that I could find into this diagram, which is a very handy one to have when troubleshooting vSphere issues. (#VCDX HINT, HINT!) Continue reading Tech101 – VMware vSphere ESXi

EMC FAST-VP & PowerPath/VE with Storage DRS & Storage I/O Control

This article builds upon the white papers and blogs that are available (listed below).  It took me a long time to understand how these mechanisms work together, since there was no single document (that I could find) describing their integration and correct usage; which left experimentation in my Pre-Production environment.  This post is an attempt to correct that knowledge gap. Continue reading EMC FAST-VP & PowerPath/VE with Storage DRS & Storage I/O Control