Storage Archives - ITFROMZERO - Share tobe shared!

How to Reclaim Storage Space (Space Reclamation / UNMAP) on VMware ESXi

By IT From Zero October 24, 2026

Is your VMware ESXi datastore still full after deleting hundreds of gigabytes inside VMs? Here is a practical, step-by-step guide to reclaiming storage space (UNMAP / Space Reclamation) for Thin VMDKs safely.

Centos

How to Configure Virtual Data Optimizer (VDO) on CentOS Stream 9: Optimize Storage with Compression and Deduplication

By IT From Zero October 7, 2026

A detailed guide on configuring LVM-VDO on CentOS Stream 9 for inline compression and deduplication, saving up to 80% disk space on VM and backup servers.

Linux

Pool “Surplus” Hard Drives into a Massive NAS with mergerfs on Linux

By IT From Zero September 13, 2026

Stop struggling with scattered hard drives. Learn how to pool drives of different sizes using mergerfs on Linux to create a flexible Home Server storage system.

VMware

VMware vSphere Virtual Volumes (vVols) Configuration Guide: Smart Storage Management via Policies Instead of Traditional LUNs

By IT From Zero August 14, 2026

Forget manual LUN provisioning. This guide helps you master VMware vVols and SPBM for flexible storage management, automation, and maximum performance optimization in virtualized environments.

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.

VMware

Eliminate ‘Noisy Neighbor’ Issues with VMware SIOC: Protecting Bandwidth for Critical VMs

By IT From Zero July 25, 2026

No more Noisy Neighbor headaches! A detailed guide on configuring VMware vSphere SIOC to protect IOPS for critical VMs like SQL and ERP, based on real-world experience.

Docker

Docker Volume & NFS: The ‘Lifesaver’ Solution for Multi-Host Data

By IT From Zero July 17, 2026

A guide on configuring Docker Volumes with the NFS Driver for multi-host data sharing. A simple, effective solution for Docker Swarm and High Availability.

Virtualization

Deploying NVMe-over-Fabrics (NVMe-oF) on Linux: High-Speed Network Storage Setup and Optimization for KVM

By IT From Zero July 14, 2026

A practical guide to deploying NVMe-over-Fabrics (NVMe-oF) over TCP on Linux — from a basic 5-minute setup to performance tuning and KVM infrastructure integration. Covers target and initiator configuration, persistent config, and benchmarking to verify results.

Linux

Linux Filesystem Comparison: ext4, XFS, Btrfs, and F2FS — Choosing the Right One for Each Server Scenario

By IT From Zero July 10, 2026

A detailed comparison of four popular Linux filesystems — ext4, XFS, Btrfs, and F2FS — covering performance, key features, and real-world use cases. A practical guide to choosing the right filesystem for each server type: database, storage, general purpose, and flash storage devices.

VMware

Handling APD and PDL Errors in VMware vSphere: Understanding and Resolving All Paths Down and Permanent Device Loss

By IT From Zero June 28, 2026

APD and PDL are two types of serious storage failures in VMware vSphere that present with similar symptoms but require completely different remediation approaches. This article walks through how to distinguish, diagnose, and resolve each condition using CLI and PowerCLI — based on real-world experience managing an 8-host ESXi cluster.