The 5 Layer Model of Compute in Immutable Infrastructure

Introduction Designing systems for Immutable Infrastructure requires a deep understanding of how compute is deployed and configured in virtual and cloud environments. In order to help practitioners better understand this architectural paradigm I have created a 5 Layer Model for Compute in Immutable Infrastructure. The following is a high level overview of this model, what the layers are, and how they are deployed. It is meant to be used as… Read More »

NSX REST API Primer #1: Connecting with cURL

Welcome to part one of a new series detailing the use of the NSX REST API. My goal is to highlight several administrative tasks of your VMware NSX environment that have been exposed via API. I will assume that the reader has an entry level understanding of layer 2 & 3 networking and where we go a bit deeper I will explain what is going on. I will not assume… Read More »

New Changes to the VCP550 Exam Blueprint

Introduction During the opening keynote of VMworld 2013 VMware CEO Pat Gelsinger announced the general availability of the generation of their flagship product vSphere, 5.5. Five months later VMware Education has released the updated version of the VMware Certified Professional –Data Center Virtualization test to cover the several new features. vSphere 5.5 is the third major release of the vSphere 5.x family,  however it is the first time the VCP-DCV5… Read More »

VCAP-DCD Part 3: V For Victory

Introduction Last Wednesday I sat the VMware Certified Advanced Professional 5 – Datacenter Design for a second time and this time I won. I improved my score by a little over 50 points. I had wanted to rebook as soon as possible after my first attempt, which by the rules would have 14 days. Unfortunately test center scheduling got in the way as well as a trip to Las Vegas… Read More »

VCAP-DCD Part 2: First Attempt – Lessons Learned

Introduction Last Thursday I made my first attempt at the VMware Certified Advanced Professional – Data Center Design 5 exam. I failed, scoring 285. 15 less than the required 300. After taking some time to decompress and reflect on the experience I am ready to discuss the good, the bad, and the ugly. I feel I have a much better understanding of what is required to pass and plan to… Read More »

VCAP-DCD Part 1: Study Resources

Introduction As I write this I have just over 48 hours before I sit the VCAP-DCD 5. I feel ready, but I am nervous. I’ve heard that the test is incredibly hard. I’ve also heard it is not that bad. I’m really not quite sure what to expect. As a blogger I feel obligated to share the resources I’ve used in my preparation. Hopefully this will help others as the… Read More »

Math for Storage Design: Part One – Performance

Introduction In the past 15 years virtualization has transitioned from a novelty to the de facto standard for data center operation. Until recently few people understood the real implications of this transition, especially in the realm of storage. We’ve seen servers go from almost all direct attached storage, to complex SAN and NAS arrays, and now back to direct attached with the trend in node based hyper-convergence technologies like VSAN.… Read More »

Brocade Vyatta 5400 Virtual Router on vSphere

Introduction As Software Defined Networking grows in popularity and adoption networking companies are branching out from their traditional hardware platforms by offering virtual appliances and software based management tools to address this market. Brocade’s Q4 2012 acquisition of Vyatta allowed the storage networking vendor to come to market with their virtual appliance for IP services, the Vyatta 5400 vRouter. Vyatta’s history of creating solutions for routing and IP security services… Read More »

vDynamips – Cisco IOS Hypervisor Virtual Appliance

Introduction Last week I wrote this post about using Dynamips to run Cisco IOS images as a guest in VMware ESXi. The instructions are long and could be complex for a novice sysadmin. To simplify the installation I have created a virtual appliance that is a little easier to use. The appliance can run multiple simulated IOS routers and switches. Juniper JUNOS is also supported. I have minimized the footprint,… Read More »