NSX – Availability and Redundancy

vSphere administrators normally have two great fears, failure of Storage and failure in the network layer, as both of these can result in 100s or 1000s of virtual machines simultaneously going off line. Software defined networking such as NSX or vShield have the potential to bring those failures even closer to home. How has NSX been architected to make it […]

vSphere Integrated Containers – Manageability and Security

vSphere Integrated Containers. For the last few years I’ve been noting with increasing anxiety the rise of docker and the predicted invasion of the virtualized machine environment. When VMware previewed the open source Photon platform and the vSphere Integrated Container initiates I breathed a sigh of relief that they had noticed the amassing armies of […]

Using infrastructure qualities to assess new technology

Change is the only constant. Everything changes and nothing stands still. That is especially true of technology. Many of today’s products will be outdated in a single life cycle. As new features are added at each major release products can be completely transformed within a few short years. Technology vendors pitch themselves as solution providers, […]

vmware design math – calculate new cluster requirements

design math – calculate new cluster requirements Question 1   Inventory of 100 physical servers    75 Severs with 2 x 2 core 2.5GHZ intel CPU’s 25 Servers with 2 x 4 core 2.5GHZ intel CPU’s   75 Servers with 4GB of memory 25 Servers with 16GB of memory   Average peak CPU usage PER CORE on […]

vmware-design math – calculate vsan requirements

Here’s a math question based on the vsan design and sizing guide   Customer wants to deploy 100  virtual  machines in a hybrid Virtual SAN 6.0 cluster, disk format v2 Each virtual  machine requires  2  vCPU,  8GB  of  memory  and  a  single  100GB  VMDK. Snapshots are not used. Customer expect a vCPU-to-core ratio of 5:1 […]

vcix-dcv-design math – Get remaining host cpu capacity

Although these are typical question for vmware design exams, (vcap-dcd, vcix-dcv-design) they are fundamental in calculating available capacity given a specific number of tolerable host failures What percentage of cluster resources does your cluster still have to start VM’s in the event of a failure with x admission control reservation. In other words, after setting admission control (see […]