OpenMediaVault vs TrueNAS SCALE vs Rockstor: Best Self-Hosted NAS Solutions 2026

A Network Attached Storage (NAS) device is the backbone of any self-hosted home lab or small business infrastructure. Whether you are centralizing file backups, running media servers, or managing shared project files, choosing the right NAS operating system determines how easy it is to manage your storage long-term.

The three leading open-source NAS platforms in 2026 are OpenMediaVault, TrueNAS SCALE, and Rockstor. Each takes a fundamentally different approach: OpenMediaVault builds on Debian with a plugin ecosystem, TrueNAS SCALE leverages the enterprise-grade ZFS filesystem, and Rockstor uses the modern Btrfs filesystem on a lightweight Linux base.

In this guide, we compare all three platforms side by side, provide Docker-based deployment instructions, and help you pick the right NAS solution for your needs.

Why Self-Host Your Own NAS in 2026?

Commercial NAS devices from Synology and QNAP are popular, but they come with significant trade-offs:

• Vendor lock-in — your data is tied to proprietary software that may stop receiving updates
• Subscription features — manufacturers increasingly gate useful features behind paid accounts
• Cloud dependency — many “smart” NAS features require external cloud servers, defeating the purpose of local storage
• Cost — commercial NAS hardware carries a premium for the bundled software

Self-hosted NAS solutions solve all of these problems. They run on commodity hardware, receive community-driven updates, and keep your data entirely under your control. For related reading on building out your self-hosted infrastructure, see our file sync and sharing guide and distributed storage comparison.

Quick Comparison Table

1. OpenMediaVault — The Best All-Rounder

OpenMediaVault (OMV) is the most flexible and accessible open-source NAS solution. Built on Debian Linux, it supports virtually any hardware — from a Raspberry Pi to a rack-mounted server — and installs alongside an existing Debian system or runs as a standalone ISO.

Key Features

• Modular plugin architecture — OMV-Extras extends the base systeplexth Docker, Portainer, Plex, and more
• Multi-filesystem support — choose ext4 for simplicity, XFS for performance, or Btrfs/ZFS for advanced features
• Lightweight — runs comfortably on 1 GB of RAM
• Active community — large forum and plugin ecosystem

Installing OpenMediaVault

ISO Installation (recommended for dedicated NAS hardware):

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# Download the latest ISO from https://www.openmediavault.org/
# Flash to USB and boot the target machine

# After installation, access the web UI at:
# http://<nas-ip-address>
# Default credentials: admin / openmediavault

Install on existing Debian 12:

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# Add the OMV repository and install
wget -O - https://raw.githubusercontent.com/openmediavault/InstallScript/master/install | sudo bash

# The script installs OMV and all dependencies
# Reboot after completion
sudo reboot

Docker Compose Deployment with Portainer

OpenMediaVault pairs well with Portainer for container management. After enabling OMV-Extras, you can deploy Portainer directly:

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version: "3.8"

services:
  portainer:
    image: portainer/portainer-ce:latest
    container_name: portainer
    restart: unless-stopped
    ports:
      - "9443:9443"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - portainer_data:/data
      - /srv/dev-disk-by-label-data/portainer:/data

volumes:
  portainer_data:

Deploy the stack through the OMV web UI under Services → Portainer, or via CLI:

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# Install Docker plugin via OMV-Extras first
# Then deploy:
docker compose -f /srv/dev-disk-by-label-data/docker-compose.yml up -d

When to Choose OpenMediaVault

Pick OMV if you want the most hardware-compatible NAS solution with the gentlest learning curve. It is ideal for home media servers, small office file shares, and Raspberry Pi-based storage projects.

2. TrueNAS SCALE — Enterprise-Grade ZFS at Home

TrueNAS SCALE (Systems, Clustering, and Aggregation, Linux Edition) is the Linux-based sibling of TrueNAS Core. Developed by iXsystems, it combines the battle-tested OpenZFS filesystem with a modern application platform built on Kubernetes.

Key Features

• OpenZFS filesystem — enterprise-grade data integrity with checksums, automatic repair, and compression
• ZFS snapshots and replication — take instant, space-efficient snapshots and replicate them to remote systems
• Applications catalog — deploy pre-packagjellyfin(Plex, Nextcloud, Jellyfin) through a built-in catalog
• Built-in virtualization — run VMs alongside your NAS workloads
• SMB, NFS, iSCSI, S3 — all major sharing protocols supported natively

Installing TrueNAS SCALE

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# Download from https://www.truenas.com/download-truenas-scale/
# Create bootable USB with balenaEtcher or dd:
sudo dd if=TrueNAS-SCALE-24.10.iso of=/dev/sdX bs=4M status=progress conv=fsync

# Boot the target machine and follow the installation wizard
# Minimum: 8 GB RAM, 16 GB recommended for ZFS ARC cache
# After install, access the web UI at:
# https://<nas-ip-address>

Storage Pool Configuration via CLI

TrueNAS SCALE’s web UI handles most configuration, but you can also create pools from the shell:

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# Create a RAID-Z1 pool with 3 disks
zpool create -f tank raidz /dev/sda /dev/sdb /dev/sdc

# Enable compression (recommended for most workloads)
zfs set compression=lz4 tank

# Create a dataset for SMB shares
zfs create tank/media
zfs set casesensitivity=insensitive tank/media

# Set up automated snapshots
zfs set com.sun:auto-snapshot=true tank

Kubernetes Apps Deployment

TrueNAS SCALE includes a built-in k3s Kubernetes cluster for deploying containerized applications:

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# Example: Deploy Jellyfin media server via the Apps catalog
# Navigate to Apps → Discover Apps → Jellyfin → Install
# Or via CLI using the TrueNAS API:
curl -X POST "http://<nas-ip>/api/v2.0/catalog/items" \
  -H "Content-Type: application/json" \
  -d '{"name": "jellyfin", "catalog": "TRUENAS", "train": "stable"}'

When to Choose TrueNAS SCALE

Pick TrueNAS SCALE if data integrity is your top priority. ZFS’s self-healing capabilities, combined with snapshot and replication features, make it the gold standard for protecting important data. The higher RAM requirement (8 GB minimum) means it needs more capable hardware than the alternatives.

3. Rockstor — Lightweight Btrfs NAS

Rockstor is a lesser-known but capable NAS platform built around the Btrfs filesystem. It uses openSUSE Leap as its base and focuses on simplicity and efficiency. The “Rock-Ons” system provides one-click Docker application deployment.

Key Features

• Btrfs filesystem — modern copy-on-write filesystem with snapshots, compression, and RAID support
• Rock-Ons system — Docker-based app deployment with a curated catalog
• Lightweight — runs on as little as 2 GB of RAM
• Btrfs send/receive — efficient incremental backup between Rockstor instances
• Samba and NFS — file sharing protocols built-in

Installing Rockstor

ISO Installation:

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# Download from https://rockstor.com/download
# Flash to USB:
sudo dd if=Rockstor-4.x.x-x86_64.iso of=/dev/sdX bs=4M status=progress

# Boot the target machine
# Default credentials: root / password
# Access web UI at: https://<nas-ip-address>:443

Install on openSUSE Leap:

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# Add the Rockstor repository
sudo zypper addrepo https://rockstor.com/repo/rockstor.repo

# Install
sudo zypper install rockstor
sudo systemctl enable --now rockstor

Btrfs Pool Management

Rockstor manages Btrfs pools through its web UI, but you can also use native Btrfs tools:

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# Create a Btrfs filesystem on a disk
mkfs.btrfs -L rockpool /dev/sda

# Mount with compression enabled
mount -o compress=zstd /dev/sda /mnt/rockpool

# Create a subvolume for Docker data
btrfs subvolume create /mnt/rockpool/docker-data

# Take a snapshot
btrfs subvolume snapshot -r /mnt/rockpool/docker-data /mnt/rockpool/docker-data-snap-$(date +%Y%m%d)

Docker Compose with Rock-Ons

Rockstor’s Rock-Ons system uses Docker Compose files under the hood. You can deploy custom stacks:

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version: "3.8"

services:
  nextcloud:
    image: nextcloud:latest
    container_name: nextcloud
    restart: unless-stopped
    ports:
      - "8080:80"
    volumes:
      - /mnt2/nextcloud-data:/var/www/html
      - /mnt2/nextcloud-db-data:/var/lib/postgresql/data
    environment:
      - POSTGRES_PASSWORD=changeme
      - NEXTCLOUD_ADMIN_USER=admin
      - NEXTCLOUD_ADMIN_PASSWORD=changeme

  db:
    image: postgres:15
    container_name: nextcloud-db
    restart: unless-stopped
    volumes:
      - /mnt2/nextcloud-db:/var/lib/postgresql/data
    environment:
      - POSTGRES_PASSWORD=changeme

When to Choose Rockstor

Pick Rockstor if you want a lightweight NAS with Btrfs features and don’t need the enterprise capabilities of ZFS. It is a good fit for budget hardware, secondary storage nodes, and users who prefer Btrfs’s balance of features and performance.

Making the Final Decision

Your choice depends on three factors:

1. Hardware constraints — OpenMediaVault and Rockstor run on minimal hardware (1–2 GB RAM). TrueNAS SCALE needs at least 8 GB.
2. Data protection needs — TrueNAS SCALE’s ZFS provides the strongest data integrity guarantees. If you are storing irreplaceable data, ZFS snapshots and self-healing are worth the hardware investment.
3. Application ecosystem — If you want to run many Docker containers alongside your NAS, OpenMediaVault (via Portainer) or Rockstor (via Rock-Ons) offer the most straightforward paths. TrueNAS SCALE uses Kubernetes, which is more powerful but has a steeper learning curve.

For users building out a complete home lab, consider pairing your NAS with container management via Portainer or Dockge and monitoring your storage health with tools from our network monitoring comparison.

FAQ

Which NAS solution is best for beginners?

OpenMediaVault is the most beginner-friendly option. Its Debian base means extensive documentation is available online, the web UI is intuitive, and the OMV-Extras plugin system lets you add features like Docker and Plex with a few clicks. It also runs on very modest hardware, so you can start with an old PC or Raspberry Pi.

Can I run TrueNAS SCALE in a virtual machine?

Yes, TrueNAS SCALE can run in VMware, Proxmox, or VirtualBox. However, you will need to pass through physical disks (via PCIe passthrough or virtual disk mapping) for ZFS to function properly. Running ZFS on virtual disks without passthrough can lead to data corruption. See our virtualization platform comparison for hypervisor options.

Does Rockstor support ZFS?

No. Rockstor is built around Btrfs and does not support ZFS. If you need ZFS features, choose TrueNAS SCALE or install ZFS on OpenMediaVault via the OMV-Extras plugin. Btrfs offers many similar features (snapshots, compression, checksums) but uses a different architecture.

How much RAM does a self-hosted NAS actually need?

The minimum depends on your choice: OpenMediaVault runs on 1 GB, Rockstor on 2 GB, and TrueNAS SCALE on 8 GB. However, for a production NAS with multiple users, Docker containers, and active file sharing, 16 GB is a comfortable baseline regardless of platform.

Can I migrate from one NAS platform to another?

Migration is possible but requires careful planning. Since all three platforms support SMB and NFS, you can share data over the network and copy files to the new system. For large datasets, use rsync over SSH to preserve permissions and timestamps:

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rsync -avz --progress /mnt/old-nas/ user@new-nas:/mnt/new-nas/

For TrueNAS SCALE to OpenMediaVault migrations, export ZFS snapshots and restore them on the new system using zfs send and zfs receive.

Is it safe to use Btrfs for a NAS in 2026?

Yes. Btrfs has been production-stable for many years and is the default filesystem for several major Linux distributions. Its RAID implementation has improved significantly, and features like online defragmentation, transparent compression, and subvolume management make it an excellent choice for NAS workloads. Just ensure you have a backup strategy in place — no filesystem replaces proper backups.