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Proxmox SDN & EVPN: The Ultimate Trick to Extend Layer 2 Networks Across Datacenters

By IT From Zero August 13, 2026

A detailed guide on configuring Proxmox SDN with EVPN to extend Layer 2 networks across datacenters. Keep VM IPs consistent across sites without expensive hardware.

Virtualization

Configuring TRIM/UNMAP for KVM/Proxmox: Reclaiming ‘Occupied’ Disk Space

By IT From Zero August 12, 2026

Stop virtual machine disks from bloating unnecessarily. Detailed guide on configuring TRIM/UNMAP for KVM/Proxmox to automatically reclaim physical space when deleting files.

Virtualization

LINSTOR on Proxmox: A ‘Lightweight’ Distributed Storage Alternative to Ceph

By IT From Zero August 3, 2026

Looking for distributed storage for Proxmox but find Ceph too heavy? LINSTOR is the perfect alternative, offering high speed and ultra-low RAM usage.

Virtualization

Handling IOMMU Groups with ACS Override Patch: The Ultimate GPU Passthrough Trick for Budget Motherboards

By IT From Zero July 25, 2026

A detailed guide on splitting IOMMU Groups using the ACS Override Patch on Linux. A solution for successful GPU Passthrough on consumer-grade motherboards.

Virtualization

Guide to Repairing QCOW2 Disk Errors with qemu-img: Recovering Proxmox/KVM Data After a Crash

By IT From Zero July 20, 2026

VM won't boot due to QCOW2 disk errors? Learn how to use qemu-img to check, repair, and rebuild virtual disk files to quickly recover critical data on Proxmox/KVM.

Virtualization

Automating Proxmox VE with Python: Stop Wasting Time on Manual Clicks

By IT From Zero July 19, 2026

Automating Proxmox VE with Python saves you hours of manual clicking. A detailed guide on cloning VMs, managing snapshots, and monitoring resources automatically.

Virtualization

Configuring Intel GVT-g on Proxmox VE: Sharing Your iGPU Across Multiple VMs Simultaneously

By IT From Zero July 13, 2026

Put your existing Intel iGPU to work by splitting it into multiple virtual vGPUs with GVT-g, running simultaneously across multiple VMs in Proxmox VE. This guide covers the full process: enabling kernel parameters, creating mediated devices, assigning them to VMs, and real-world monitoring — the result: Jellyfin transcodes 4K H.265 at just 15% CPU instead of 100%.

Virtualization

KVM/Proxmox Benchmarking: Measure CPU, Disk, and Network Performance Like a Pro

By IT From Zero July 5, 2026

In-depth guide to KVM/Proxmox benchmarking. Use fio, sysbench, and iperf3 to measure IOPS, CPU, and Network performance to optimize VMs before going live.

Virtualization

Deploy a VyOS Virtual Router on Proxmox/KVM: Firewall, NAT, and Site-to-Site VPN from A to Z

By IT From Zero June 20, 2026

A hands-on guide to deploying a VyOS virtual router on Proxmox or KVM, covering stateful zone-based firewall, NAT masquerade, port forwarding, and IPsec IKEv2 Site-to-Site VPN. Follows a practical workflow from installation to a production-ready lab network.

Virtualization

QEMU Guest Agent: Installation and Configuration on Linux/Windows for Consistent Snapshots and VM Monitoring

By IT From Zero June 20, 2026

QEMU Guest Agent (qemu-ga) is a daemon running inside the VM that freezes the filesystem before snapshots are taken, ensuring data consistency and preventing corruption on restore. This guide covers installation on Linux and Windows, configuration with KVM/libvirt and Proxmox, plus troubleshooting for common issues.