Mini PC vs NAS: Which Should You Buy First?

Every home lab thread eventually hits the same question: do I buy a NAS or a mini PC first? Both can run Docker. Both can serve files. Both show up in every “starter home lab” guide. The overlap is real, which makes the decision harder than it should be.

This guide cuts through the confusion. I have run both devices side by side for years, and the answer depends entirely on what you plan to do in the first six months. Get the order wrong and you will either run out of storage or run out of compute — and end up buying the other device sooner than planned anyway.

If you are starting from zero, this will save you from the most common mistakes.

What a NAS Does Best

A NAS is purpose-built for one job: storing and serving data reliably. Everything else it does is secondary.

Storage density. A 4-bay NAS like the Synology DS923+ or QNAP TS-464 holds four 3.5-inch drives in a compact enclosure. With 20 TB drives, that is 80 TB raw or roughly 60 TB usable in RAID 5. No mini PC comes close to this without external enclosures.

Data protection. RAID, checksumming (on Btrfs or ZFS), automated snapshots, and built-in backup tools. Synology’s Hyper Backup and QNAP’s Hybrid Backup Sync handle offsite replication to cloud providers with minimal configuration. If a drive fails, you swap it without data loss.

Always-on efficiency. A 2-bay Synology DS224+ idles at 12-16W with drives spinning. It is designed to sit in a closet and run for years without attention. Drive hibernation drops consumption further during off hours.

Media serving. NAS vendors have spent years optimizing their platforms for Plex, Jellyfin, and DLNA. The QNAP TS-464’s N5095 handles 1-2 hardware transcodes. Synology’s newer models with Intel chips do the same. For direct-play media libraries, even a low-end NAS works perfectly.

A NAS is not great at compute-heavy tasks. The embedded CPUs (typically 2-4 cores), limited RAM ceilings (4-16 GB on most consumer models), and restricted OS environments make them poor choices for running Proxmox, heavy Docker stacks, or anything that needs real processing power.

What a Mini PC Does Best

A mini PC is a general-purpose computer that happens to be small and power-efficient. Its strength is flexibility.

Raw compute. The Beelink SER9 runs a Ryzen 9 6900HX with 8 cores, 16 threads, and supports up to 64 GB DDR5. That is enough horsepower for a full Proxmox cluster node with multiple VMs and dozens of containers running simultaneously. A NAS CPU cannot touch this.

Virtualization. Mini PCs run Proxmox, ESXi, or bare-metal Linux without compromise. You get full VM support with PCIe passthrough, nested virtualization, and proper resource allocation. NAS virtualization (Synology Virtual Machine Manager, QNAP Virtualization Station) is limited by both hardware and software.

Docker without guardrails. While a Synology runs Docker containers in a sandboxed environment with limited networking options, a mini PC gives you full Docker Compose, custom bridge networks, macvlan, host networking — whatever the workload requires. No vendor restrictions on what you can install or how you configure it.

Development and testing. If you write code, a mini PC is a real Linux box. You can compile, run CI pipelines, host Gitea, run databases at full speed, and SSH in like any other server. A NAS is not designed for this workflow.

The weakness is storage. Most mini PCs have 1-2 M.2 NVMe slots and no 3.5-inch bays. You can add USB-attached drives, but that introduces reliability concerns and eliminates hot-swap capability. A mini PC with two 2 TB NVMe drives gives you 4 TB total — enough for services and caches, but nowhere near enough for a media library or long-term backup repository.

When to Buy a NAS First

Buy the NAS first if any of these describe you:

You have a growing media library. If Plex or Jellyfin is the reason you are building a home lab, start with storage. A QNAP TS-464 at ~$649 gives you 4 bays, hardware transcoding, and a built-in container runtime. You can run Plex directly on the NAS and add a mini PC later when you need more transcoding power or additional services.

You need centralized backups. If the primary goal is backing up multiple computers, phones, and cloud accounts to one place, a NAS is the right tool. Synology Active Backup for Business handles Windows, Mac, and Linux machines. Time Machine support is built in. These are solved problems on a NAS and a pain to replicate on a mini PC.

You are a photographer or videographer. Large RAW files and video projects eat storage fast. A NAS provides the capacity, the redundancy, and the ability to share files over SMB/NFS to editing workstations. A mini PC with two NVMe drives will run out of room in weeks.

You want low maintenance. Synology DSM and QNAP QTS update themselves, send drive health notifications, and manage storage pools without manual intervention. If you do not want to maintain a Linux server, a NAS is the more hands-off option.

A 2-bay Synology DS224+ at ~$300 is a solid starting point for users in this category. If you know you will want more than two drives within a year, skip to the 4-bay DS923+ at ~$960 and avoid the early upgrade.

When to Buy a Mini PC First

Buy the mini PC first if these sound like you:

You want to learn Proxmox or Docker. If the home lab is primarily a learning environment for virtualization, containerization, and self-hosting, you need compute — not storage. A Beelink N100 (around $160 when available, though stock fluctuates) runs Proxmox with several LXC containers and light VMs. You can store everything on its internal NVMe drive until your data outgrows it.

You are a developer. Gitea, PostgreSQL, Redis, CI runners, staging environments — these need CPU and RAM, not 40 TB of disk. A Minisforum UM890 Pro at ~$480 with 32 GB RAM handles a serious dev stack. Mount a cheap USB drive or NFS share for anything that needs persistence beyond the NVMe.

You plan to self-host aggressively. Home Assistant, Nextcloud, Vaultwarden, Immich, Paperless-ngx, reverse proxies, monitoring stacks — running 15+ services requires real compute. A Beelink SER9 at ~$729 with 64 GB RAM handles this without throttling. A NAS would choke at half that load.

You already have external storage. If you have a USB drive or existing file server that covers your storage needs for now, skip the NAS. Put the budget into compute and buy the NAS when your storage requirements actually demand it.

The home lab starter guide walks through the full setup process if you are going the mini PC route first.

Can One Device Do Both?

Yes, with trade-offs that matter.

Mini PC as NAS. Install TrueNAS SCALE or Unraid on a mini PC and you have a functional NAS. The problem is drive capacity. You are stuck with 1-2 NVMe drives internally, and USB-attached HDDs do not support SMART monitoring reliably, cannot be hot-swapped, and add failure points. For a small data set (under 4 TB), this works fine. For a serious media library or backup repository, it does not scale. See our DIY NAS vs Synology comparison for the full breakdown.

NAS as compute server. A QNAP TS-464 with 16 GB RAM can run a modest Docker stack alongside its storage duties. You will get 5-10 lightweight containers before hitting RAM and CPU limits. Synology’s Container Manager works but restricts networking options and image sources. Neither platform supports Proxmox or real VM workloads.

The hybrid approach. Some people install Proxmox on a mini PC, pass through a USB HBA or DAS to a TrueNAS VM, and run containers alongside it. This works — I have done it — but it introduces complexity. If the Proxmox host needs a reboot, your storage goes offline. If the TrueNAS VM crashes, every other service that depends on shared storage breaks. Separating compute and storage onto different hardware eliminates this single point of failure.

The single-device approach is fine for experimentation and learning. It is not ideal for anything you rely on daily.

The Ideal Two-Device Setup

The cleanest home lab architecture separates storage from compute. Here is what that looks like in practice.

Storage tier: a 4-bay NAS. The Synology DS923+ or QNAP TS-464 handles file serving over SMB and NFS, RAID-protected storage, automated backups, and media library hosting. It runs no containers and no VMs — just storage. This keeps it stable and simple.

Compute tier: a mini PC. The Beelink SER9 or Minisforum UM890 Pro runs Proxmox or Docker on its internal NVMe drives. Services that need persistent data mount NFS shares from the NAS. The mini PC handles all the compute: Plex transcoding, Home Assistant, reverse proxies, databases, dev tools, and anything else that needs CPU and RAM.

Network connection. Both devices on a 2.5GbE switch. NFS over 2.5GbE delivers 280+ MB/s, which is more than enough for container volumes, media streaming, and backups. A managed switch lets you add VLANs for IoT isolation later.

Budget breakdown for this setup:

• Synology DS923+ (diskless): ~$960
• Beelink SER9 (barebones): ~$729
• 2.5GbE switch (5-port): ~$30-50
• 2x 16 TB HDDs for NAS (RAID 1): ~$400
• 64 GB DDR5 kit for mini PC: ~$80
• 2 TB NVMe for mini PC OS/containers: ~$100

Total: ~$2,300-2,320

A budget version using a Synology DS224+ ($300) and an N100 mini PC ($160 when in stock) brings the total under $900 with drives, though prices on these components have been volatile.

For NAS-specific recommendations, see best NAS for home lab. For mini PC picks, see best mini PC for home server.

Common Mistakes

Buying a NAS to run Docker. A NAS running 20 containers is a NAS doing a job it was not designed for. It works until it doesn’t — and when the CPU or RAM hits its ceiling, you cannot upgrade either component on most consumer NAS units. Buy a mini PC for compute-heavy workloads from the start.

Buying a mini PC for bulk storage. Attaching four USB drives to a mini PC and calling it a NAS is a recipe for data loss. No hot-swap, unreliable SMART data, USB controller bottlenecks, and no proper RAID without an HBA. If you need more than 4 TB of protected storage, buy a proper NAS or build a DIY NAS with a dedicated case and HBA card.

Over-buying on day one. You do not need a $960 NAS and a $729 mini PC to get started. An N100 mini PC (around $160 when in stock) runs a serious Docker stack. A $300 2-bay Synology stores 30+ TB. Start with one device, learn what you actually need, and add the second when you hit real limits — not theoretical ones.

Ignoring power costs. Two devices running 24/7 consume real electricity. A NAS at 15W plus a mini PC at 20W totals 35W, which costs roughly $30-40/year at US average rates. That is fine. But if your “mini PC” is actually an old desktop pulling 80W idle, your annual electricity cost exceeds the price of a proper low-power device. Check idle wattage before committing to any hardware.

Skipping the network. A NAS and mini PC on a 100 Mbps switch will bottleneck everything. At minimum, use gigabit. Ideally, use 2.5GbE — both the Beelink SER9 and most current NAS models include 2.5GbE ports. A 5-port 2.5GbE unmanaged switch costs $30-50 and eliminates the most common performance complaint in two-device setups.

Next Steps

If you are still unsure, ask yourself one question: in six months, will you have more data that needs protecting, or more services that need compute? The answer tells you which device to buy first.

For NAS buyers, start with our best NAS for home lab roundup. For mini PC buyers, see best mini PC for home server. And if you want the full picture from zero, the home lab starter guide covers networking, software, and architecture decisions alongside hardware.