Practical IT Operations Knowledge

Practical guides for IT infrastructure

Real-world troubleshooting, Windows Server operations, virtualization notes, and infrastructure decisions from the field.

Explore by Topic

Eight areas. Each one has a full set of guides behind it, not a single overview page.

Windows Server

Event logs, performance triage, service failures, storage, boot and backup recovery.

Active Directory

Forest and OU design, FSMO roles, replication failures, health checks.

Group Policy

Why a GPO does not apply: filtering, precedence, loopback, gpt.ini errors.

DNS

Zones, forwarders, replication scope, scavenging, zone transfers, Event IDs.

WSUS

Installation, approval rings, SUSDB maintenance, sync and download failures.

Hyper-V

Virtual switches, VHDX, checkpoints, failover clustering, live migration.

Proxmox VE

Install, storage, networking, backups, HA, LXC, GPU passthrough, recovery.

Comparisons

Platform decisions with licensing, operational cost, and migration reality.
Popular Guides
Proxmox vs Hyper-V: Choosing the Right Hypervisor Comparison GPO Not Applying: 6 Causes and Fixes Group Policy Active Directory Health Check Checklist Active Directory How to Install Proxmox VE: Step-by-Step Proxmox Windows Server DNS Troubleshooting DNS Windows Server Event Log Troubleshooting Windows Server
Latest Articles
Jul 24, 2026 Group Policy Processing Order: LSDOU, Link Order, Inheritance, and Enforced Jul 24, 2026 Group Policy Loopback Processing Not Applying: Merge vs Replace Jul 16, 2026 GPO Security Filtering: Denied (Security) vs Unknown Reason Jul 16, 2026 Group Policy Event ID 1058: Fix gpt.ini Errors by Error Code Jul 13, 2026 Group Policy Troubleshooting: Tools, Logs, and Workflow Jul 13, 2026 GPUpdate /Force Not Working: Errors and Fixes

Operational sequence

The order of actions and what breaks in between, not a list of features.

Failure first

Exact errors, log evidence, and the check order that finds the cause fastest.

Tradeoffs stated

Where homelab and production need different answers, both answers are given.

Written for operators

SMB sysadmins and homelab operators running production-like infrastructure.