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vSphere 7 - Identify vSphere distributed and standard switch capabilities

VCP-DCV for vSphere 7.x Juan Mulford - February 21, 2022

In VMware vSphere, a switch is a virtual networking device that allows you to connect virtual machines to each other, and to physical network adapters on the host. There are two types of switches in vSphere: standard switches and distributed switches.

vSphere 7 - Describe Datastore Clusters

VCP-DCV for vSphere 7.x Juan Mulford - January 14, 2022

In Objective 1.6.4 of vSphere’s exam, we must describe datastore clusters. Here, we overview what is datastore cluster and storage DRS. It is critical to identify core Storage DRS features and requirements. Also, it is important to understand DRS initial placement and ongoing balancing and aggressiveness levels.

vSphere 7 - Describe vSphere High Availability

VCP-DCV for vSphere 7.x Juan Mulford - January 7, 2022

This article focuses on objective 1.6.4 – Describe vSphere High Availability. Here, we overview the concept of vSphere HA and Primary and Secondary hosts. Next, we study vSphere availability settings, including failures and responses in HA, admission control, and heartbeat datastores.

vSphere 7 - Describe How DRS Scores Virtual Machines

VCP-DCV for vSphere 7.x Juan Mulford - January 4, 2022

This objective needs to describe how Distributed Resource Scheduler (DRS) scores virtual machines. Here, we overview the Old DRS model vs. the new one presented in vSphere 7. Then we study in-depth how VMware DRS scores the virtual machines.

vSphere 7 - Describe vSphere Enhanced vMotion Compatibility (EVC)

VCP-DCV for vSphere 7.x Juan Mulford - January 2, 2022

In objective, we quickly describe vSphere Enhanced vMotion Compatibility (EVC). First, let’s take a look at VMware vMotion. Then, an overview of how EVC works and some of its basic concepts.

vSphere 7 - Describe Distributed Resource Scheduler (DRS)

VCP-DCV for vSphere 7.x Juan Mulford - January 1, 2022

In objective 1.6.1, you need to describe Distributed Resource Scheduler (DRS). First, let’s study what DRS is and its key features. Then, let’s take a look at the DRS’ major requirements and key topics: DRS automation and aggression levels, and DRS rules.

vSphere 7 - Describe ESXi Cluster Concepts

VCP-DCV for vSphere 7.x Juan Mulford - December 30, 2021

Objective 1.6 is a parent of multiple key topics discussing vSphere clustering. Therefore, this article is a quick introduction and an overview of all the essential concepts to understanding ESXi clusters.

vSphere 7 - Describe Instant Clone Architecture And Use Cases

VCP-DCV for vSphere 7.x Juan Mulford - December 28, 2021

In objective 1.5, you need to describe instant clone architecture and use cases. First, let’s study virtual machine cloning types and techniques, and also compare the critical capabilities of each one. Then we can move to the instant clone topic, study architecture, operation, and use cases.

vSphere 7 - Differentiate Between vSphere NIOC And vSphere SIOC

VCP-DCV for vSphere 7.x Juan Mulford - December 23, 2021

There are three ways to manage I/O traffic in vSphere: Network I/O Control (NIOC), Storage I/O Control (SIOC), and Storage Distributed Resources Scheduler (SDRS). This article (Objective 1.4) focuses on how to differentiate between vSphere Network I/O Control (NIOC) and vSphere Storage I/O Control (SIOC).

vSphere 7 - Describe Basic Storage Concepts In K8s, vSAN, and vVols

VCP-DCV for vSphere 7.x Juan Mulford - December 14, 2021

The target of objective 1.3.4 is to describe basic storage concepts in K8s, vSAN, and vVols. vVols is critical, and in this objective, we go deep into its concepts, components, and architecture. Here we study key storage concepts of vSphere with K8s, which is now known as vSphere with Tanzu. Finally, we should explore vSAN.

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Raspberry Pi OS in a Virtual Machine with VMware

Juan Mulford - November 13, 2020 4

Although the Raspberry Pi OS is designed and optimized for the Raspberry Pi module, it is possible to test and use it without its hardware, with VMware. This solution can be useful if you are a developer (or just a curious guy) and don't have a Raspberry Pi module with you

Unable to delete an "inaccessible" datastore

Juan Mulford - March 8, 2019 7

I was switching my storage array, so I migrated the VMs from that old datastore/storage to a new datastore/storage. The old datastore was shared by 3 ESXi hosts, no cluster. After migrating the VMs and unmount/delete the datastore, it was still presented in two of the ESXi hosts and was marked as inaccessible.

This is not a valid source path / URL - SourceTree and Gitlab

Juan Mulford - February 29, 2020 1

I have been working on a project with a friend who set up a repository in Gitlab but even though I was able to view all projects on it, I couldn’t really join the repository. I was using SourceTree and Gitlab.

How to export a Virtual Machine using the VMware OVF Tool

Juan Mulford - April 5, 2020 9

The VMware OVF Tool is implemented by VMware for easily importing and exporting virtual machines in Open Virtualization Format (OVF) standard format. Here, I want to show you how to download and install it, and then how to use it from a Windows machine.

Couldn't load private key - Putty key format too new

Juan Mulford - December 1, 2021 5

couldn't load private key - Putty key format too new.” This issue happens when you use PuTTygen to generate or convert to a ppk key. Here is how to fix it.