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. Many home labs end up with both devices, but which one to buy first depends on what you plan to do in the first six months. Get the order wrong and you will run out of storage or compute, and end up buying the other device sooner than planned anyway.

If you are starting from zero, this will help you avoid 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 DS925+ 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 little configuration. If a drive in a redundant array fails, you replace it and let the array rebuild.

Always-on efficiency. Synology rates the 2-bay DS225+ at about 17W during access and about 6W with its drives hibernating. It is designed to sit in a closet and run for years without attention.

Media serving. NAS platforms are convenient for direct-play libraries. Transcoding support is model-, codec-, client-, subtitle-, and software-dependent; do not buy from a claimed stream count without checking your actual media.

A NAS is not great at compute-heavy tasks. The models here use four-core embedded CPUs, their memory ceilings are modest (6GB on the DS225+, 16GB on the TS-464, 32GB on the DS925+), and the vendor OS limits what you can install. That makes them poor choices for Proxmox, heavy Docker stacks, or other CPU-intensive workloads.

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 Pro uses a Ryzen 7 H 255 with eight cores and 16 threads, far more general-purpose compute than the four-core chips in the NAS units above. It ships with 24GB or 32GB of soldered memory, so choose the size you need at purchase.

Virtualization. A mini PC runs Proxmox VE or a standard Linux distribution directly. You get full VM support, plus PCIe passthrough where the platform’s IOMMU groups allow it. NAS virtualization (Synology Virtual Machine Manager, QNAP Virtualization Station) is limited by both hardware and software.

Docker without vendor limits. A NAS runs containers inside the vendor’s OS, update schedule, and resource limits. A mini PC gives you a normal Linux host where Docker Compose, custom bridge networks, macvlan, and host networking work the same way as on any server.

Development and testing. If you write code, a mini PC can run a standard Linux distribution. 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 one or two M.2 slots and no 3.5-inch bays. You can add USB-attached drives, but that introduces reliability concerns and rules out hot-swap. 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 gives you 4 bays, an Intel Celeron N5095 with hardware-accelerated transcoding, and container support. You can run Plex directly on the NAS and add a mini PC later when you need more compute or additional services.

You need centralized backups. If the main 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, and Time Machine support is built in. These NAS applications provide backup features that take more setup 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 SMB/NFS sharing to editing workstations. A mini PC with two NVMe drives will run out of room quickly.

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

A 2-bay Synology DS225+ is a solid starting point for users in this category. If you know you will want more than two drives within a year, start with the 4-bay DS925+ 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, containers, and self-hosting, you need compute, not storage. A Beelink Mini S13 (Intel N150, 16GB DDR4, 500GB SATA SSD, dual 2.5GbE) is enough to learn Proxmox with a few LXC containers and a light VM. Keep everything on its included SSD until your data outgrows it.

You are a developer. Gitea, PostgreSQL, Redis, CI runners, and staging environments need CPU and RAM, not 40 TB of disk. A Minisforum UM890 Pro (Ryzen 9 8945HS, two SO-DIMM slots for up to 96GB) can run several development services. Mount an NFS share or an external drive for anything that needs persistence beyond the internal NVMe.

You plan to run many services. Home Assistant, Nextcloud, Vaultwarden, Immich, Paperless-ngx, reverse proxies, and monitoring stacks increase CPU and memory requirements. A Beelink SER9 Pro with 32GB of memory gives this kind of stack far more CPU headroom than a four-core NAS. If you expect to outgrow 32GB, choose a model with SO-DIMM slots such as the UM890 Pro, because the SER9 Pro’s memory is soldered.

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 Community Edition (formerly TrueNAS SCALE) or Unraid on a mini PC and you have a functional NAS. The problem is drive capacity. Most mini PCs hold one or two internal drives, and USB-attached HDDs are less dependable for SMART monitoring, cannot be hot-swapped, and add failure points. For a small data set (under 4 TB), this works. For a large 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 16GB of RAM can run a modest Docker stack alongside its storage duties, but its four-core Celeron and 16GB memory ceiling set a hard limit. Synology’s Container Manager covers common containers within the same kind of hardware limits. Both vendors offer VM apps, but neither NAS is a substitute for a Proxmox host.

The hybrid approach. Some people install Proxmox on a mini PC, pass drives or a storage controller through to a TrueNAS VM, and run containers alongside it. It works, but it adds 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 removes 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

Separating storage from compute lets you choose hardware for each role. Here is what that looks like in practice.

Storage tier: a 4-bay NAS. The Synology DS925+ 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 Pro 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 the compute: media services, Home Assistant, reverse proxies, databases, dev tools, and anything else that needs CPU and RAM. Both use AMD Radeon graphics. Jellyfin supports AMD hardware acceleration on Linux, but Plex’s Linux hardware transcoding officially supports Intel Quick Sync and NVIDIA, so plan on direct play or CPU transcoding for Plex on these two.

Network connection. Put both devices on a 2.5GbE switch. A 2.5GbE link carries up to about 312 MB/s before protocol overhead, which is plenty for container volumes, media streaming, and backups. A managed switch lets you add VLANs for IoT isolation later.

What to budget for this setup:

• Synology DS925+ (diskless) or QNAP TS-464
• Beelink SER9 Pro, which ships with soldered memory and a 1TB SSD, so it needs no RAM kit; a barebone UM890 Pro needs DDR5 SO-DIMMs and an SSD
• A 5-port 2.5GbE switch
• Two NAS hard drives for a mirrored (RAID 1 or SHR) pool
• An optional second NVMe SSD for the mini PC’s free M.2 slot
• A UPS sized for both devices and the switch

Memory, SSD, and hard drive prices change often, so total these parts at purchase time rather than relying on an old estimate.

A budget version pairs a Synology DS225+ with an N150 mini PC such as the Beelink Mini S13.

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 can add only a little memory on most consumer NAS units and cannot upgrade the CPU at all. 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 4-bay NAS and a Ryzen mini PC to get started. An N150 mini PC such as the S13 runs a useful set of containers, and a 2-bay NAS with a pair of large drives covers most starter storage needs. 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 add to electricity costs. At $0.18 per kWh, roughly the 2026 US residential average, each watt of continuous draw costs about $1.58 a year. A NAS averaging 15W plus a mini PC averaging 20W totals 35W, or about $55 a year. An old desktop idling at 80W costs about $126 a year on its own. 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: the Beelink SER9 Pro, the Beelink Mini S13, and the NAS models above all include 2.5GbE ports, and an unmanaged 5-port 2.5GbE switch removes 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.