Are you currently learning how modern IT infrastructures are built? Then this overview is exactly what you need. Here you’ll find an example of a well-thought-out server landscape as it might be used in companies – with clearly defined roles, recommended hardware, and suitable software. Each server type...

🚀 Server Room Network Setup Overview – A Practical Example In the following, I take a look at an exemplary network setup in a server room. The configuration shows how various servers, storage solutions, and network components are interconnected to form a powerful infrastructure. Each component plays a...

In my IT lab, I have set up a sample network configuration. My entire lab environment consists of several virtualized Windows servers and Windows clients running on VMware ESXi. The entire setup is hosted on a physical Windows 11 machine with VMware Workstation installed, where ESXi 8 runs as a virtual...

When attempting to connect from a client (e.g., Windows 11) to a SQL Server instance RUBINHOOD, connection errors may occur. Error messages such as "SQL Server does not exist or access denied" or "SQL Server Error: 17" indicate that the server is unreachable. The problem is often due to one of the following...

"RUBIN-HOOD: Configuration refresh message: The system cannot access one or more event logs because of insufficient access rights, file corruption, or other reasons. For more information, see the Operational channel in the ServerManager-ManagementProvider error log on the target server." Windows Server is a...

This guide will walk you through the process of changing the computer name in Windows Server 2025. In the Server Manager, go to Local Server. You will see the current computer name. Click on the current Computer Name to open the System Properties window. In the System Properties window, click on the...

In a Windows Server environment, Remote Desktop Protocol (RDP) is disabled by default for security reasons. To enable RDP access for employees using Windows clients, you need to configure the correct settings via Group Policy (GPO) in Active Directory (AD). Open the Server Manager, click on Tools, and select...

Here's how you can create a new virtual machine (VM) from an existing template in vSphere. 1. Open vSphere Web Client Log in to the vSphere Web Client. 2. Select the Template Navigate to VMs and Templates from the left menu. Select the desired template (e.g., VM Vorlage), right-click on it, and choose New VM...

This guide walks you through the process of configuring a Windows Server as a domain controller using Active Directory Domain Services (AD DS). In Server Manager, you'll see a notification under Post-deployment Configuration. Click "Promote this server to a domain controller". Select "Add a new forest", then...

Sharing a folder in Windows allows other users on the network to access or edit files. This can be particularly useful in office environments or at home when multiple devices are connected. Want to share a folder on your network? Follow these steps to set up folder sharing in Windows. Go to the folder you...

This guide shows you how to install Windows 11 on a VMware ESXi virtual machine while bypassing the system requirements (such as TPM and Secure Boot). --- 1. Start the VM - The VM boots into the Boot Manager menu. - If it doesn't start automatically, open the console. 2. Select the Boot Source - Choose "EFI...

This tutorial provides a step-by-step guide to setting up an Active Directory environment and connecting a Windows 10 client to the domain. By following these steps, you will: Create an Organizational Unit (OU) and a user account Configure network settings on a client machine Join a Windows 10 client to the...

Der Schutz von IT-Systemen vor Angriffen und Schwachstellen ist eine der wichtigsten Aufgaben in der Systemadministration. Eine zentrale Rolle spielen dabei Sicherheitspatches, die regelmäßig installiert werden müssen, um die Abwehr gegen neue Bedrohungen zu stärken. Dieser Beitrag zeigt, wie man auf...

This guide walks you through installing the vCenter Client using VMware Workstation. Follow each step carefully, and you'll have your vCenter Server up and running in no time. If you encounter any issues, refer back to the specific step or consult VMware's official documentation for more detailed assistance....

Installing VMware ESXi in VMware Workstation is a great way to create a virtual test environment for ESXi. Here are the steps to install ESXi as a virtual machine in VMware Workstation: Open VMware Workstation Pro and begin creating a new virtual machine. Right-click on "My Computer" in the Library panel and...

In diesem Blogbeitrag werde ich erklären, wie du eine virtuelle Maschine (VM) mit Hyper-V erstellst, darauf Windows installierst und schließlich eine Verbindung über Remote Desktop von einem anderen Computer herstellst. Wir gehen Schritt für Schritt durch den Prozess, von der BIOS-Aktivierung bis zur...

Der Raspberry Pi 5 ist ein leistungsstarker Einplatinencomputer, der sich hervorragend als Heimserver eignet. In diesem Blogbeitrag zeige ich Ihnen, wie Sie Ubuntu Server auf Ihrem Raspberry Pi 5 installieren können. Folgen Sie dieser detaillierten Anleitung, um Ihren eigenen Ubuntu-Server einzurichten. -...

In der modernen digitalen Ära ist eine leistungsfähige IT-Infrastruktur für Unternehmen unerlässlich. Besonders für Firmen mit etwa 1000 Mitarbeitern bietet die Virtualisierung enorme Vorteile. Aber wie funktioniert das Ganze? Lassen Sie uns einen Blick auf die wichtigsten Komponenten und deren...

Überall um uns herum finden wir heutzutage Netzwerke, die unser Leben prägen. Ob zu Hause, im Büro oder in Schulen – sie bilden das Rückgrat unserer digitalen Kommunikation. Ein besonders weit verbreitetes Netzwerk ist das Local Area Network , besser bekannt als LAN . Doch was verbirgt sich hinter...

If you encounter the error "VMware Workstation does not support nested virtualization" when starting a virtual machine on Windows 11, the issue often stems from enabled security features like Device Guard, Credential Guard, or the Windows Hypervisor. The Windows Hypervisor can block hardware virtualization...

Picture this: Your database queries are crawling, virtual machines are struggling to keep up, and your storage administrators are juggling multiple systems just to keep everything running. Sound familiar? Whether you're managing a growing startup or steering a mid-sized enterprise, storage challenges can be...

This short guide explains how to configure a static IP address and DNS servers and check available IP addresses. The Fritz!Box serves as the gateway and DNS server in this setup. --- 1. Open Network Connections: - Go to Control Panel > Network and Internet > Network Connections. 2. Open Adapter Properties: -...