Virtualization Archives - Page 9 of 17 - ITFROMZERO

Virtualization tutorial - IT technology blog

Mount and Edit qcow2, vmdk Files Directly on Linux Using NBD: Fast, Simple, No VM Boot Required

By IT From Zero June 4, 2026

Forget booting rescue ISOs! This guide shows you how to mount qcow2 and vmdk files directly to a Linux host using NBD to fix configs and recover VM data in minutes.

VMware

Hot Add CPU and RAM on VMware vSphere: Upgrade Virtual Machine Resources Without Rebooting

By IT From Zero June 3, 2026

Hot Add CPU and RAM on VMware vSphere lets you upgrade running virtual machine resources without shutting them down — but it must be enabled before the VM boots. This guide covers configuration via GUI, PowerCLI, and the .vmx file, plus a tip for enabling it in your VM template so you never face the "need more RAM but can't shut it down" situation.

Virtualization

GNOME Boxes: Create and Manage Linux VMs Quickly Without Complex Configuration

By IT From Zero June 2, 2026

GNOME Boxes is the fastest way to get a VM running on Linux — 3 clicks, no libvirt or QEMU configuration needed. This article compares Boxes with virt-manager and VirtualBox, analyzes when to choose Boxes, and covers practical tips including disk resizing and manual snapshots via qemu-img.

VMware

Automating VMware Workstation with the vmrun Command: From Manual Management to Pro

By IT From Zero June 1, 2026

Manage VMware virtual machines like a pro with the vmrun command. Automate power cycles, snapshots, and guest interactions directly from the Command Line.

Network

Configuring VXLAN on Linux: A Layer 2 Network Extension Solution for Containers and VMs

By IT From Zero June 1, 2026

Want to connect virtual machines across multiple physical servers as if they were on the same switch? This Linux VXLAN configuration guide will help you build a professional Layer 2 overlay network, overcoming the limitations of traditional VLANs.

Virtualization

QEMU ARM64 Emulation on Linux: Running Raspberry Pi OS and Android for IoT Development

By IT From Zero May 29, 2026

A practical guide to installing QEMU and emulating ARM64 on Linux to run Raspberry Pi OS and Android without real hardware. Covers real-world IoT development workflows: cross-compilation, Docker buildx for ARM64, snapshots, and shared folders.

Virtualization

Optimizing Huge Pages for Proxmox/KVM: Real-World Database Performance Tuning

By IT From Zero May 27, 2026

Accelerate Database and Redis on Proxmox by configuring Static Huge Pages. A detailed guide to reducing TLB misses and optimizing CPU performance by 10-15%.

Virtualization

As Fast as Physical Drives: Configuring KVM Shared Folders with virtiofs

By IT From Zero May 26, 2026

A guide to configuring virtiofs for KVM virtual machines to achieve near-native file sharing speeds. The perfect alternative to 9p and NFS.

Virtualization

Installing Windows and Linux Smoothly on Mac with UTM: Free, Fluid, and No Parallels Needed

By IT From Zero May 25, 2026

Installing Windows and Linux on M1/M2/M3 Macs has never been easier or more cost-effective. A detailed guide on using UTM as a powerful, free Parallels alternative.

Virtualization

CPU Pinning and NUMA Topology on Proxmox VE: Optimizing Virtual Machine Performance for Low Latency

By IT From Zero May 22, 2026

CPU pinning and NUMA topology are two VM performance optimization techniques that are often overlooked on Proxmox VE. This guide walks through the configuration step by step — from inspecting the host topology to pinning vCPUs and isolating cores — to reduce latency for workloads that demand low-latency performance, such as databases and real-time processing.