Best NAS for Docker in 2026: Tested and Compared

Running Docker containers on a NAS turns a file server into a self-hosted powerhouse — Home Assistant, Immich, Jellyfin, Pi-hole, Nextcloud, and dozens of other services running 24/7 on hardware that’s already in your closet. But not every NAS handles Docker equally. The difference between a NAS that runs five containers and one that runs thirty comes down to three things: CPU cores, available RAM, and how good the container management software is.

Most NAS devices ship with 4 GB of RAM. That’s enough for the NAS operating system and maybe three lightweight containers before things start swapping to disk. Serious Docker workloads need 16–32 GB, which means RAM expandability matters as much as the base spec. CPU core count determines how many containers can run concurrently without competing for compute cycles — and the gap between a dual-core and an eight-core is the gap between a hobby setup and a production stack.

This guide compares five NAS devices specifically for Docker and self-hosting workloads. We’re focusing on what matters for containers: multi-core CPU performance, RAM capacity and expandability, container management software, and networking for service access.

Our Pick: TerraMaster F4-424 Pro

The TerraMaster F4-424 Pro is the only NAS you can unbox and immediately run 20+ Docker containers without touching the RAM or worrying about the CPU. Shipping with 32 GB DDR5 and an 8-core i3-N305 at ~$860 makes every other NAS in this guide feel like it needs an asterisk.

Specs: Intel Core i3-N305 (8C/8T, 3.8 GHz) · 32 GB DDR5-4800 · 4x 3.5”/2.5” SATA + 2x M.2 NVMe · 2x 2.5GbE · HDMI

Idle Power: ~24W · Price: ~$860

The i3-N305 has eight Efficient cores at up to 3.8 GHz. In Docker terms, that means running Immich (with its ML worker consuming a full core during face detection), Jellyfin transcoding a stream via Quick Sync, Home Assistant polling 50 devices, Nextcloud serving files, a PostgreSQL database, Nginx Proxy Manager, Vaultwarden, Uptime Kuma, and a dozen more services — all simultaneously, all without any single container waiting for CPU time. The quad-core N5095 in the QNAP starts showing contention around 12–15 active containers. The i3-N305 doesn’t flinch at 25.

The 32 GB DDR5 is the real differentiator. Here’s why: Immich alone consumes 6–8 GB when its machine learning worker is active (PostgreSQL needs 2 GB, the ML model takes 3–4 GB). Nextcloud with a database backend wants 2–4 GB. Jellyfin takes 2–4 GB during transcoding. The NAS OS itself uses 1.5–2 GB. On a QNAP with 8 GB total, you’re already in swap territory after three heavy apps. The F4-424 Pro has room for all of them with 15+ GB to spare.

TOS 6 includes Docker Manager in the App Center, which handles image pulls, container creation, and basic lifecycle management through a web UI. It’s functional — you can deploy a stack from a compose file, view logs, and manage containers — but it’s less polished than QNAP’s Container Station or Synology’s Container Manager. Most F4-424 Pro power users deploy Portainer or Dockge as their first container and manage everything else from there.

The real power move: install Proxmox and run Docker in an LXC container. The F4-424 Pro exposes a standard UEFI/BIOS, Intel NICs have mainline Linux driver support, and TerraMaster doesn’t void your warranty for alternative OS installs. Proxmox with Docker in LXC gives you bare-metal performance, snapshots, and the ability to run additional VMs alongside your container stack. See our home lab starter guide for the Proxmox path.

The trade-offs: ~$860 is a significant investment, idle power is higher at ~24W (the Synology idles at 11W), and there’s no PCIe slot for 10GbE. TOS’s app ecosystem is thin beyond basic NAS functions. If you want the NAS itself to do more than serve files and run Docker — scheduled backups to cloud, photo management, surveillance — the software won’t match Synology or QNAP.

Best Value: QNAP TS-464

The QNAP TS-464 pairs the best container management software on any NAS with a quad-core Intel CPU and a PCIe expansion slot, all for ~$649. It’s the Docker NAS that balances capability and cost.

Specs: Intel Celeron N5095 (4C/4T, 2.9 GHz) · 8 GB DDR4 · 4x 3.5”/2.5” SATA + 2x M.2 NVMe · 2x 2.5GbE · PCIe Gen 3 x2

Idle Power: ~19W · Price: ~$649 (8 GB model)

Container Station is the standout feature. It supports Docker containers, LXC system containers, and Kata Containers (lightweight VMs with container-like speed) — all from a single interface. The built-in Docker Compose editor lets you paste a compose file and deploy a multi-container stack without SSH. The integrated Docker Hub registry browser searches and pulls images directly. LXC support means you can run a full Ubuntu or Debian instance alongside your Docker containers for services that need a traditional Linux environment.

The N5095’s four cores handle 8–15 concurrent containers comfortably at stock 8 GB RAM. Upgrade to 16 GB (the official maximum; buy the 4 GB model and add your own 16 GB SO-DIMM for ~$30) and you can push to 15–20 containers depending on workload intensity. That covers a comprehensive self-hosted stack: Jellyfin, Home Assistant, Pi-hole, Nextcloud, Vaultwarden, Paperless-ngx, Nginx Proxy Manager, Uptime Kuma, Gitea, and several more.

Intel Quick Sync is a bonus for media containers. Jellyfin and Plex detect the N5095’s Quick Sync hardware and use it for transcoding, freeing the CPU for other containers. Without Quick Sync, a single 1080p transcode would consume 80–100% of the CPU, starving every other running container. With it, transcoding uses the dedicated hardware engine and barely registers on CPU utilization. For Plex-specific details, see our best NAS for Plex guide.

The PCIe Gen 3 x2 slot matters more for Docker than you’d expect. A 10GbE NIC (~$100–150) eliminates networking as a bottleneck when multiple containers serve data simultaneously — Nextcloud syncing files while Jellyfin streams while Home Assistant pushes dashboards. No other NAS in this price range offers this expansion path.

The honest limitations: 16 GB max RAM means you’ll hit a ceiling before the CPU does. Memory-hungry containers like Immich (6–8 GB) can consume most of your available RAM alone. And QNAP’s security track record requires diligence — keep QTS auto-updated, never expose it to the internet without a VPN, and disable UPnP.

Best Container Software: Synology DS923+

The Synology DS923+ doesn’t win on raw specs — but Container Manager on DSM 7 is the most polished, most reliable Docker experience on any NAS.

Specs: AMD Ryzen R1600 (2C/4T, 3.1 GHz) · 4 GB DDR4 ECC (expandable to 32 GB) · 4x 3.5”/2.5” SATA + 2x M.2 NVMe · 2x 1GbE · PCIe Gen 3 x2

Idle Power: ~11W · Price: ~$960

Start with what makes this a serious Docker host despite the dual-core CPU: 32 GB ECC RAM. Two SO-DIMM slots accepting up to 32 GB of ECC DDR4 mean error-corrected memory for containers running databases, file sync, and always-on services. ECC silently corrects single-bit memory errors that could corrupt a PostgreSQL database or cause a container to crash inexplicably after weeks of uptime. No other NAS in this guide offers ECC.

Container Manager (DSM 7.2+) handles Docker with Synology’s trademark polish. Full Docker Compose support with a YAML editor, project-based container grouping, scheduled container updates, and integrated logging that feeds into DSM’s notification system. When a container crashes, DSM can email or push-notify you. Container Manager also integrates with Synology’s firewall rules, so you can expose specific container ports without managing iptables manually.

The R1600’s dual-core, 4-thread architecture is the limitation. It handles 10–15 lightweight containers (Pi-hole, Vaultwarden, Nginx Proxy Manager, Uptime Kuma, Watchtower) without issue. It struggles when multiple CPU-intensive containers run simultaneously — Immich’s ML worker doing face detection while Nextcloud generates previews while Paperless-ngx runs OCR. For that workload profile, the i3-N305 in the TerraMaster has four times the cores.

The broader DSM ecosystem is the real argument for Docker on a Synology. Active Backup for Business handles PC and server backups without needing a Duplicati or Borg container. Synology Drive replaces Nextcloud for file sync. Synology Photos replaces Immich for basic photo management. By using DSM’s native apps where possible, you reduce the number of containers you need to run — which matters more when the CPU has only two cores.

The PCIe slot accepts Synology’s E10G22-T1-Mini for 10GbE (~$130), and the lowest idle power in this guide at 11W makes this the most efficient always-on Docker host. At ~$960, you’re paying for software maturity and ECC reliability over raw compute.

Best Hardware Specs: UGREEN DXP4800 Plus

The UGREEN DXP4800 Plus has the most impressive spec sheet in this roundup: a 5-core Pentium Gold 8505 at up to 4.4 GHz, RAM expandable to 64 GB, and 10GbE networking built in — no add-in card needed.

Specs: Intel Pentium Gold 8505 (1P+4E cores, 4.4 GHz boost) · 8 GB DDR5 (expandable to 64 GB) · 4x 3.5”/2.5” SATA + 2x M.2 NVMe · 10GbE + 2.5GbE · 128 GB internal SSD · HDMI 2.0

Idle Power: ~20W · Price: ~$620

The Pentium Gold 8505 combines one Performance core with four Efficient cores, delivering strong single-threaded performance (4.4 GHz boost) and adequate multi-threaded throughput. For Docker, this hybrid architecture means latency-sensitive containers (databases, reverse proxies) benefit from the P-core while background workloads spread across the E-cores.

64 GB maximum RAM is the highest in this guide — double the Synology, quadruple the QNAP. With 64 GB, you could run Immich, Nextcloud, Jellyfin, Home Assistant, multiple databases, and still have 30+ GB free for ZFS ARC caching or additional services. The 8 GB DDR5 base is usable for a starter stack but upgrade to 16–32 GB before deploying more than 8–10 containers.

Built-in 10GbE eliminates the need for a PCIe slot and expansion NIC. If your network has a 10GbE switch, containers serving large files (Nextcloud, Jellyfin, Samba) benefit immediately. The additional 2.5GbE port can serve a separate management VLAN or be bonded with the 10GbE for redundancy.

The 128 GB internal SSD stores UGOS Pro and Docker images, keeping containers off your spinning drives. This measurably improves container startup times and reduces wear on your data drives.

UGOS Pro Docker support runs Docker Engine 26.1, installed from the App Center. A dedicated “docker” shared folder is auto-created. The built-in mobile app includes basic Docker management, but for serious use you’ll deploy Portainer or Dockge as your first container. There’s no equivalent to Container Station or Container Manager built into the OS — UGREEN relies on the broader Docker/Portainer ecosystem.

The trade-off is software maturity. UGOS Pro is the newest NAS OS in this guide, and the app ecosystem is still thin. UGREEN is iterating quickly — Docker support, Tailscale integration, and remote access via UGREENlink have all improved significantly — but you’re an early adopter compared to a QNAP or Synology. If raw hardware per dollar is your priority and you’re comfortable managing Docker via Portainer and SSH, the DXP4800 Plus is hard to beat.

Budget Pick: QNAP TS-262

Note: The QNAP TS-262 is currently unavailable from most retailers. If you can find it in stock, it remains a strong budget Docker NAS. Otherwise, consider the ASUSTOR AS5402T at ~$407 as a budget alternative with Quick Sync.

The QNAP TS-262 gets you Container Station with a PCIe expansion slot for ~$330 — the cheapest entry point for serious NAS-based Docker with room to grow.

Specs: Intel Celeron N4505 (2C/2T, 2.9 GHz) · 4 GB DDR4 (expandable to 16 GB) · 2x 3.5”/2.5” SATA + 2x M.2 NVMe · 1x 2.5GbE · PCIe Gen 3 x2 · HDMI 2.1

Idle Power: ~12W typical · Price: ~$330

The value proposition is Container Station at a budget price. You get the same Docker, LXC, and Kata Container support as the TS-464 — the same Compose editor, the same registry browser, the same container lifecycle management. The difference is the CPU ceiling: the dual-core N4505 handles 3–5 active containers comfortably, and starts showing contention at 6–8 when CPU-intensive tasks overlap.

Upgrade the RAM immediately. The 4 GB base is barely enough for QTS itself — add a $15–25 SO-DIMM to reach 8 GB (enough for 5–8 containers) or 16 GB (the max, enough for 10–12 lightweight ones). Two SO-DIMM slots make the upgrade trivial.

The PCIe Gen 3 x2 slot is genuinely valuable at this price. No other sub-$400 NAS offers a PCIe expansion option. Add a 10GbE NIC or a USB expansion card as your setup grows. Combined with the HDMI 2.1 output for emergency console access and two M.2 NVMe slots for SSD caching, the TS-262 punches above its weight for expandability.

The honest reality: this is a starter Docker NAS. The dual-core, dual-thread N4505 can’t match the quad-core N5095 in the TS-464, let alone the i3-N305. If your Docker ambitions extend beyond Pi-hole, Home Assistant, a reverse proxy, and a couple of lightweight services, start with the TS-464. But if you’re testing the Docker-on-NAS waters or running a small stack on a budget, the TS-262 delivers the platform for ~$320 less than the TS-464.

For storage capacity beyond two bays, see our best 4-bay NAS guide.

How to Choose: Buying Criteria

RAM: The Most Important Docker Spec

RAM determines how many containers you can run simultaneously. Here’s what real-world stacks consume:

The most common mistake: buying a NAS with 4 GB and assuming Docker “just works.” It does — for two containers. The third starts swapping to disk, and performance craters. Budget for a RAM upgrade on day one for every NAS except the TerraMaster.

The upgrade cost comparison:

CPU Cores: More Matters More Than Clock Speed

Docker containers share CPU time. A dual-core CPU with two containers at 50% utilization each has zero headroom. An 8-core CPU with eight containers at 50% each still has four idle cores.

The core count hierarchy for Docker:

1. i3-N305 (8C/8T) — TerraMaster F4-424 Pro: 20–30+ containers, handles CPU-heavy workloads (Immich ML, Plex transcoding, OCR) alongside lightweight services.
2. Pentium Gold 8505 (1P+4E) — UGREEN DXP4800 Plus: 15–25 containers, strong single-thread for databases, good multi-thread spread.
3. N5095 (4C/4T) — QNAP TS-464: 8–15 containers, the sweet spot for most Docker setups.
4. R1600 (2C/4T) — Synology DS923+: 10–15 lightweight containers, struggles with CPU-intensive workloads.
5. N4505 (2C/2T) — QNAP TS-262: 3–5 containers, starter/light use only.

Clock speed matters less than core count for Docker. A container doing OCR doesn’t care whether the core runs at 2.9 or 3.8 GHz — it cares whether a core is available at all.

Container Management Software

QNAP Container Station (TS-464, TS-262): The most feature-rich option. Docker, LXC, and Kata Containers in one interface. Built-in Compose editor, Docker Hub browser, container import/export. Supports creating container networks and volumes through the GUI. The best choice if you want a GUI-first Docker experience.

Synology Container Manager (DS923+): The most polished option. Docker Compose with project grouping, scheduled updates, and integration with DSM’s notification and firewall systems. Fewer features than Container Station (no LXC or Kata), but everything it does, it does reliably.

TerraMaster Docker Manager (F4-424 Pro): Functional basics — pull images, create containers, view logs. Most users deploy Portainer as their first container and manage everything else from there. The weakest built-in option, but adequate if you’re comfortable with Docker CLI or Portainer.

UGOS Pro Docker Engine (DXP4800 Plus): Docker Engine 26.1 with no proprietary management layer. The mobile app has a Docker section for basic operations. Serious management requires Portainer or Dockge. The most “raw Docker” experience — closest to running Docker on a Linux server.

Networking for Containers

Every container that serves a web interface or API endpoint needs network access. For most home lab setups, 2.5GbE is more than sufficient — a dozen containers serving web UIs barely touch 100 Mbps total.

10GbE matters when containers serve large data: Nextcloud syncing multi-gigabyte folders, Jellyfin streaming 4K remuxes to multiple clients, or NFS-mounting container volumes from other machines. The UGREEN DXP4800 Plus includes 10GbE built-in. The QNAP TS-464, DS923+, and TS-262 can add 10GbE via PCIe. The TerraMaster has no 10GbE path.

Docker’s bridge networking works on all five NAS devices. Macvlan (giving containers their own IP addresses on the LAN) works on QNAP and Synology but may require SSH configuration on TerraMaster and UGREEN.

Bottom Line

The TerraMaster F4-424 Pro at ~$860 is the best NAS for Docker. Shipping with 32 GB DDR5 and an 8-core i3-N305 means you run 20+ containers on day one with zero upgrades. If you’re willing to install Proxmox, it becomes the most capable single-box home lab server under $1,000.

For the best balance of Docker capability, container software, and price, the QNAP TS-464 at ~$649 gives you Container Station’s Docker/LXC/Kata support, a PCIe slot for 10GbE, and handles 8–15 containers on stock RAM. Upgrade to 16 GB for $30 and push to 15–20.

If software polish, ECC RAM, and the lowest power draw matter most, the Synology DS923+ runs Container Manager on the best NAS OS available, with 32 GB ECC expandability and 11W idle power. However, at its current ~$960 street price (well above the original ~$600 MSRP), the DS925+ at ~$625 is a much better value — consider it instead unless you specifically need the PCIe slot.

For maximum hardware specs per dollar — 64 GB RAM ceiling, built-in 10GbE, and a 5-core CPU — the UGREEN DXP4800 Plus at ~$620 delivers, with the caveat that UGOS Pro is still maturing.

And to get started with Docker on a NAS for under $400, the QNAP TS-262 at ~$330 gives you Container Station and a PCIe slot — just upgrade the RAM before deploying your first stack. (Note: the TS-262 is currently unavailable from many retailers — check stock before committing.)

Whichever you choose, pair it with quality storage. See our best hard drives for NAS guide, and check our full NAS comparison for the broader picture.