With their affordable prices, low power consumption, and tiny form-factor, Single-Board Computers are amazing for lightweight DIY projects. But due to their performance limitations, you might have a hard time imagining their utility in dedicated home lab environments.

Although running multiple GUI-based VMs is out of the question, SBCs can punch above their weight class when you want to dabble in containers and self-hosted apps. So, here are five pointers for anyone looking to turn their credit-card-sized system into a reliable home server.

5 Prioritize x86 SBCs over their ARM counterparts

To avoid running into compatibility issues

Unlike the PC landscape, the SBC ecosystem is littered with ARM boards, ranging from the lesser-known Libre Computer devices to the ultra-popular Raspberry Pi family. But when you’re trying to build a full-fledged home lab, the x86 architecture is better than ARM.

Don't get me wrong, I admit that the average ARM SBC has enough horsepower to run most of the popular apps inside containers. However, you could run into compatibility issues when you want to experiment with Proxmox, TrueNAS Scale, and other NAS/home lab platforms that lack ARM64 images on a typical SBC. So if you’re not very fond of troubleshooting, it might be a good idea to stick to x86 boards for your home projects.

4 Pick a model with more memory

The more, the merrier

Besides CPU cores, memory is the most important part of your home lab setup. And this statement holds regardless of whether you’re using server-tier hardware or a miniature development board. If you haven’t already decided on an SBC, I recommend picking one with plenty of RAM.

While you can test CLI distros and self-hosted apps on 4GBs (or even 2GB) of memory, an SBC with at least 8GB RAM is ideal, as you’ll have some extra headroom for complex projects.

3 Use an SSD as the primary storage device

Higher endurance and faster speeds than your average microSD card

For years, microSD cards have remained the de-facto storage devices for SBCs. Not only are they cost-effective, but you can also load different operating systems on your microSD cards and swap them at will, making them perfect for DIY tinkerers.

But when you’re building a home lab, you’ll want to minimize the latency as much as possible. Modern SBCs are typically equipped with USB Gen 3 ports, with some featuring dedicated M.2 and PCIe ports. Besides improving the transfer speeds of your home server, the average SSD has better endurance than your run-of-the-mill microSD card, and it’s a good idea to use these high-speed drives in your SBC-powered workstation.

2 Containers are your best friends

VMs, not so much...

If you’ve ever tried experimenting with virtual machines on CPUs with a few cores, it’s not hard to imagine the performance limitations of deploying VMs on SBCs. In contrast, containers are extremely lightweight – to the point where you can simultaneously deploy many apps inside containerized environments without experiencing any performance issues whatsoever.

Assuming your SBC’s architecture is compatible with the container image, you can even run operating systems inside containers. As someone who earns his daily bread by testing quirky projects on the Raspberry Pi, I can assure you that Docker and SBCs are a formidable combo, especially once you pair them with a light OS…

1 Grab CLI distros with minimal bloat

DietPi for the win!

Operating systems that rely on a command-line interface can seem rather complicated compared to their menu-based and GUI counterparts. However, lowering the resource overhead on the OS side is vital for any home server, and that’s where CLI distros come in handy, especially those featuring the least amount of bloatware.

DietPi is easily my favorite operating system for the job. While its name might imply otherwise, this ultra-light distro is compatible with the majority of SBCs, not just the Raspberry Pi family. But if you want something more familiar, the minimal version of Debian works pretty well for home lab setups.

Venturing into the vast and interesting world of home labs with SBCs

If you’ve never stepped into the home lab arena, Single-Board Computers can help you get up to speed without draining your wallet or increasing your electricity bills. For those who want to focus solely on the self-hosting aspect of home labs, you can build a robust FOSS server with a decent SBC.

But once you get into the more complex projects involving virtual machines, it might be a good idea to look elsewhere. While it may not be able to deliver top-notch performance in modern games, your outdated PC can serve as rock-solid experimentation hub for all your home lab ideas.