Author: Danilo

Creating an NFS Share in the vSAN File Services article shows how to create and mount an NFS share. We will create it in the vSAN File Services and mount it in a PhotonOS client VM. First and Foremost, What is an NFS Share? NFS is an acronym for Network File System. It is a network protocol developed by Sun Microsystems in 1984. It allows a user of a client computer to access files over a network, much like local storage is accessed. However, those files are somewhere in the network. This means that users can access files stored on…

Creating a Custom vSphere Alarm will show all the necessary steps to create a custom vSphere Alarm to monitor the CPU usage of all virtual machines. First Things First, What is an Alarm? An alarm is a notification sent in response to an event or condition with an object in the inventory. When we install the vCenter Server, we have hundreds of alarms by default. However, custom alarms can be created to satisfy specific monitoring situations. Selecting the vCenter server object, click on Configure –> Alarm Definitions. On this page, it is possible to see all predefined alarms, as we…

Working with a vSphere Resource Pool is an article that briefly explains vSphere Resource Pools and provides some examples and case uses. First and foremost, what is a vSphere Resource Pool? vSphere Resource Pools allow you to delegate control over the resources of a host or a cluster. When we talk about resources, it means CPU and memory resources. It is a logical abstraction for managing resources. It can be hierarchically grouped and partitioned into available CPU and memory resources. The topmost resource pool is called the root resource pool. In a standalone host, the total amount of CPU and…

Understand the vSAN ESA storage pool: how it groups NVMe SSDs, differences from OSA disk groups, and current ReadyNodes support. First and Foremost, What is the vSAN ESA? vSAN ESA is an acronym for Express Storage Architecture. vSAN Express Storage Architecture, or ESA, is a new vSAN architecture to process and store data. It is an optional or alternative architecture for vSAN. You can already use the Original Storage Architecture (OSA). vSAN ESA is optimized to exploit the full potential of the latest hardware and unlock new capabilities. At this moment, vSAN ESA is only supported on ReadyNodes servers. Before…

Comparing vSAN Architectures OSA x ESA is an article comparing both vSAN architectures OSA and ESA. First and Foremost, What is vSAN ESA? OSA is an acronym for Original Storage Architecture. It is the original vSAN architecture released when vSAN was made. ESA is an acronym for Express Storage Architecture. It is a new vSAN architecture released in November 2022 and introduces many improvements compared with the OSA architecture. However, the ESA will not replace the OSA. Both architectures are available (you can choose what architecture to use): vSAN Express Storage Architecture, or ESA for short, is a new vSAN…

Fixing the Stats Primary Election alert on the vSAN ESA Cluster is an article that explains how to fix the error “Stats Primary Election” detected by the vSAN Skyline Health on a vSAN ESA cluster. Detecting the Issue When you access the vCenter Server through vSphere Client, you can see an alert like shown in the following figure: On the “All Issues” page, we can see when this alert was triggered: Executing the vSAN Skyline Health, we can confirm this behavior. Look that we have 1 unhealthy component: The unhealthy component name is “Stats primary election”. Click on “Troubleshooting” to…