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What is kernel in computing?

When most people think of computer operating systems, they think of graphical user interfaces (GUIs) with windows, icons, and menus. However, before GUIs were common, the kernel was the only graphical interface users saw.

What is x86 Architecture?

An x86 server is a computer that uses an x86 central processing unit (CPU) architecture. The x86 architecture, developed by Intel Corporation, defines how processors handle and execute directions passed from operating systems and software programs.
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Connect to an Ubuntu server as a root using WinSCP

Using WinSCP is one of the most popular ways to transfer files to a remote Linux server. In this post, we will see how to connect to an Ubuntu server as a root, using WinSCP. The “root” user is not directly accessible with a login operation on Ubuntu and other Linux distributions.

What is Digital Twins

Based on the recent announcement about NVIDIA's Omniverse, I have studied more about the platform and its tight integration with digital twins. Digital twins is a new type of simulation or model used to understand and optimize complex systems Here is some key knowledge about digital twins and their application in the real world.

vSphere 7 - Identify vSphere distributed and standard switch capabilities

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.

VMware Homelab: What Are Your Options

The idea of a homelab or virtual lab is not new to VMware and has been around for more than 20 years. It is still trendy today, and the need for cost-effective but higher-level equipment has put many enthusiasts off exploring for one.
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Home Lab 101: It's All About Lots Of Resources?

Setting up a home lab can be challenging, but it is the best way to learn about systems infrastructure at your own pace. The process can appear intimidating unless you have full access to an IT department.

vSphere 7 - Describe Datastore Clusters

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.

How To Adjust php.ini Values in WordPress

Depending on the theme and configuration required, you’d need to know how to Adjust php.ini Values in WordPress. The most common values to configure are PHP Time Limit and PHP Max Input.

vSphere 7 - Describe vSphere High Availability

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.
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How To

mulcas.com-Raspberry-Pi

Raspberry Pi OS in a Virtual Machine with VMware

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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
mulcas.com-VMware-OVF-Tool

How to export a Virtual Machine using the VMware OVF Tool

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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.

Edit the DNS or IP Address Settings of the VCSA 6.x

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The DNS setting is essential for the vCenter Server Appliance deployment. If you omit its configuration, you will fail the installation. Every production environment must have a DNS service running in the infrastructure, and are those DNS setting the one you use for your deployment. But, there is a chance that you have a test environment or home lab...
how to expand the storage pool capacity of your Synology NAS

Expand the Storage Pool Capacity of your Synology NAS

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In this guide, we will expand a Synology NAS storage pool. If you have empty drive slots on your NAS, you install additional drives and add them to an existing storage pool to increase your NAS capacity and performance.
Joining ESXi host to a Windows Active Directory

Joining an ESXi host to a Windows Active Directory

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Joining ESXi host to a Windows Active Directory (domain) will enable a centralized security authority in your vSphere environment. The active directory improves authentication, authorization, and accounting.
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Troubleshooting

Unable to delete inaccessible datastore

Unable to delete an "inaccessible" datastore

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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

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

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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.
WinSCP VCSA

Unable to Access the VCSA 6.7 via WinSCP

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One of the many and easiest ways to get the logs from the ESXi hosts and vCenter Server Appliance (VCSA), is accessing directly to the files directory using tools such as WinSCP, which helps to transfer the files between a local and a remote computer ( Ex. VCSA). I never have had issues with the ESXi hosts and WinSCP, however, trying to access the VCSA is a different story.
Couldn't load private key - Putty key format too new

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

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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. 
This request is not authorized to perform this operation.

This request is not authorized to perform this operation - Azure-Veeam

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Attempting to add a new external repository (Azure blob storage container) to the Veeam Backup and Replication console throws the following error: This request is not authorized to perform this operation.