ZFS

• ZFS Snapshots Explained for Beginners: How They Work

  A ZFS snapshot is an instant, read-only copy of a dataset at one moment. Learn how they use space, how to restore files, and why one is not a backup.

• ZFS Pool Layout for Plex Media Server: RAIDZ2 or Mirrors?

  Choose a ZFS pool layout for Plex: compare RAIDZ2 and mirrors, separate media from metadata, plan expansion, and build backups you can restore.

• TrueNAS CORE to SCALE Migration: Steps That Keep Your Pool

  Back up data and config, clean-install on the boot SSD, restore the CORE config and import your pool. Covers GELI, jails, and why the move is one-way.

• RAIDZ1 vs RAIDZ2: Parity, Resilver Risk, and Which to Pick

  RAIDZ1 survives one disk failure, RAIDZ2 survives two. What that means for usable capacity, resilver risk, and how to choose at each vdev width.

• TrueNAS RAM Requirements by Workload

  TrueNAS RAM sizing for file sharing, apps, VMs, iSCSI, directory services, L2ARC, and deduplication, based on official workload guidance.

• Best Hard Drives for TrueNAS NAS in 2026

  The best hard drives for TrueNAS NAS must be CMR, not SMR — ZFS will punish the wrong choice. Here are the top picks by workload, budget, and bay count.

• Best Budget NAS Build for Home: What Actually Works in 2026

  A practical guide to the best budget NAS build for home use: Intel N100 platforms, ZFS-compatible drives, TrueNAS SCALE setup, and the backup plan.

• How to Set Up TrueNAS SCALE: From Bare Metal to First Share

  A practical step-by-step guide on how to set up TrueNAS SCALE — hardware, installation, pool creation with RAIDZ, datasets, SMB shares, and backups.

• Expand a TrueNAS Pool: Vdev, Larger Disks, RAIDZ Expansion

  Three ways to expand a TrueNAS pool: add a vdev, replace each disk with a larger one, or widen RAIDZ one drive at a time on TrueNAS 24.10 or later.

• TrueNAS Pool Degraded? Fix It by Replacing the Failed Disk

  Degraded means one disk dropped out and your data is still intact. Find the failed drive by serial, swap it, resilver, and get the pool back to online.

• TrueNAS Pool Import Failed or I/O Suspended: zpool Fixes

  Decode zpool import states, reconnect missing disks, roll back after a crash, clear suspended I/O, and import read-only to copy your data off.

• TrueNAS SCALE vs Unraid vs OMV 2026: 5 Factors Compared

  TrueNAS SCALE, Unraid and OpenMediaVault compared on filesystem, expansion, apps, hardware and cost, with a clear pick for each type of home NAS build.

• TrueNAS Scrub: What It Does and How Often to Run It

  A TrueNAS scrub verifies every used block's checksum and repairs bad data from redundancy. See how often to run it and what its errors mean.

• What Is a Zvol? TrueNAS Zvol vs Dataset Explained

  A zvol is a raw ZFS block device for one iSCSI target or VM disk; a dataset is a shared filesystem. Learn which to create and why volblocksize is fixed.

• TrueNAS SCALE vs CORE vs Community Edition (2026)

  SCALE is now TrueNAS Community Edition; CORE is legacy FreeBSD. See which to install, Docker apps vs jails, KVM vs bhyve, and how pools migrate.

• ZFS Tuning on TrueNAS: ARC Max, Recordsize, lz4 vs zstd

  Learn which recordsize suits media, VMs and databases, when to raise zfs_arc_max, when zstd-3 pays off over lz4, and which ZFS tunables to leave alone.

• ZFS RAIDZ vs Mirror: Capacity, IOPS, and Resilver Risk

  Choose 6- to 8-wide RAIDZ2 for media and bulk storage, or two-way mirrors for VMs and databases. Compare usable capacity, fault tolerance and growth.

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