Virtualization Archives - ITFROMZERO

Configuring SR-IOV on Linux: Achieving Near Bare-Metal Network Performance for KVM Virtual Machines

By IT From Zero October 9, 2026

SR-IOV enables KVM virtual machines to communicate directly with physical network adapters, bypassing the hypervisor to achieve maximum throughput and microsecond latency. Here is a complete guide to setup and troubleshooting peak-hour packet drops in production.

VMware

How to Safely Reset a Lost or Forgotten ESXi Root Password

By IT From Zero October 9, 2026

Discover 3 safe ways to recover a lost VMware ESXi 7.0/8.0 root password using an Ubuntu Live USB, vCenter Host Profile, or reinstalling without losing VM data.

Virtualization

How to Set Up Virtual Machine Manager (VMM) on Synology NAS: Running Linux and Windows VMs from Your NAS

By IT From Zero October 8, 2026

Synology Virtual Machine Manager (VMM) lets you run Linux and Windows virtual machines directly on your NAS without a dedicated server. This guide walks through every step: checking hardware compatibility, installing VMM, configuring storage and a virtual switch, creating VMs, and setting up monitoring.

Fedora

Comprehensive Guide to GPU Passthrough (VFIO/IOMMU) on Fedora Workstation

By IT From Zero October 5, 2026

A step-by-step guide to setting up GPU Passthrough (VFIO/IOMMU) on Fedora Workstation for Windows KVM/QEMU VMs, achieving over 97% of native GPU performance.

VMware

VMware Auto Deploy Configuration Guide: Diskless ESXi Deployment via PXE

By IT From Zero October 4, 2026

A comprehensive guide to VMware Auto Deploy: Boot diskless ESXi hosts over PXE, configure Stateless Caching for resilience, and handle production boot storms.

Virtualization

Rescue KVM/Proxmox VMs with libguestfs: Reset Root Password, Fix Boot Errors, and Recover Data Quickly

By IT From Zero October 3, 2026

Learn how to use the libguestfs tool suite on Linux to rescue KVM/Proxmox VMs: fix fstab errors, reset root passwords, and mount virtual disks to extract data with single commands.

Virtualization

Zero-Downtime KVM/Proxmox Live Migration: Dedicated Networks, ZSTD Compression, and Post-Copy

By IT From Zero October 3, 2026

A comprehensive guide to solving stalled Live Migrations in KVM and Proxmox VE. Learn how to configure dedicated networks, leverage ZSTD compression, and employ Post-copy for seamless VM migrations.

VMware

Configuring Remote Syslog on VMware ESXi: Centralize Logs to a Syslog Server

By IT From Zero October 2, 2026

A detailed guide on configuring Remote Syslog on VMware ESXi using the esxcli CLI and Host Client. Centralize logs securely to a Syslog Server and minimize the risk of log loss during hardware failures.

VMware

Installing VMware ESXi on Mini PCs: Secrets to Building a ‘Small but Mighty’ Home Lab with Intel NUC and Beelink

By IT From Zero September 21, 2026

Don't let the 'No Network Adapters' error stop you. Learn how to create a Custom ISO and optimize VMware ESXi on Mini PCs like Intel NUC and Beelink for a powerful, energy-efficient Home Lab.

VMware

vNUMA Configuration: The Secret to Fixing Slow ‘Beast’ VMs on VMware vSphere

By IT From Zero September 16, 2026

Large VMs running slow are often due to vNUMA misalignment. Learn how to align Virtual NUMA with physical CPUs on vSphere to reduce RAM latency and boost app performance by 20-30%.