Pi-hole is one of those rare tools that feels indispensable once you start using it. It quietly filters out ads and trackers for every device on your network, reducing bandwidth waste and enhancing privacy with minimal maintenance. For a long time, I ran Pi-hole on my NAS because it seemed efficient to keep everything centralized. After all, if the NAS is already always on, why not let it handle DNS too?

That setup worked fine for a while, but over time, it became clear that “fine” wasn’t good enough. I noticed subtle reliability issues, especially during reboots or updates. Whenever the NAS went offline, so did my entire network’s ability to resolve domains. Eventually, I decided to move Pi-hole to a dedicated Raspberry Pi, and the improvement was immediate.

Why running Pi-hole on a NAS sounds ideal

Convenience and consolidation in one box

At first glance, running Pi-hole on a NAS seems like a perfect solution. Most home lab setups already rely on NAS devices for Docker containers, media servers, and automation tools, so adding one more lightweight container feels harmless. It’s a tidy solution that reduces device sprawl and keeps all your core services in one place. For many people, having one device to rule them all seems like the ultimate efficiency.

There’s also the appeal of using hardware you already own. NAS units are often designed to run 24/7, so Pi-hole fits naturally alongside other services, such as Nextcloud or Jellyfin. It’s easy to manage, easy to back up, and perfectly functional—at least on paper. Everything runs under one dashboard, which makes administration seem more straightforward than it actually is.

But that same convenience is what hides the bigger problem. When you rely on a single device for multiple network functions, any issue affects all of them. I learned that lesson the hard way when DNS outages started rippling through my smart devices every time I touched the NAS. What felt like an elegant solution turned into a fragile dependency chain that I couldn’t easily escape.

The reliability trade-off inherent in running Pi-hole on your NAS

When one service fails, they all do

DNS is one of those services you never think about until it stops working. When Pi-hole was running on my NAS, I didn’t realize how fragile my network had become. Every firmware update, Docker restart, or power cycle resulted in a temporary DNS failure for every device in the house. Even my Home Assistant setup would act erratically because it couldn’t reach essential services, and sometimes I didn’t even realize why until I checked Pi-hole’s logs.

The frustrating part wasn’t the downtime itself but how often it happened during maintenance. I could reboot my NAS to install a patch, and suddenly my phone, TV, and smart speakers would all lose connectivity. It made me hesitant to update anything. A single point of failure, even on reliable hardware, is still a risk. When the device that hosts your DNS is also your storage, media center, and automation hub, you’re setting yourself up for cascading problems.

Once I understood that, the solution was obvious. DNS deserved to live on its own hardware, separate from other workloads. That’s where the Raspberry Pi came in. By offloading Pi-hole to its own dedicated board, I could isolate it from the chaos of updates, reboots, and resource-heavy containers. It felt like an immediate relief, making my DNS simple, stable, and reliable in a way my NAS could never fully guarantee.

Why a Raspberry Pi is the perfect host

Always-on, power-efficient, and independent

A Raspberry Pi is tailor-made for jobs like this. It draws just a few watts, boots instantly, and can run headless without complaint for months. Even an older Pi 3 can handle Pi-hole effortlessly, processing tens of thousands of queries a day without breaking a sweat. Because it uses so little power, you can leave it running indefinitely without noticing any difference on your utility bill.

By moving Pi-hole to its own Raspberry Pi, I isolated DNS from every other dependency. If the NAS crashes, needs an update, or suffers a file system hiccup, it no longer affects the rest of my network. The Pi hums quietly in the corner, powered by a small UPS so it stays online even when other devices don’t. Having a dedicated, single-purpose machine just for DNS means I can now troubleshoot without fear of breaking anything else.

There’s also room to take things further. Adding Unbound to the mix allows the Pi to resolve domains recursively for improved privacy, eliminating the need for external DNS providers entirely. You gain more control over your queries while enhancing security and performance. It’s a simple setup that transforms a $50 board into one of the most essential devices in your network infrastructure.

How to migrate Pi-hole to a Raspberry Pi

Backups, setup, and network configuration

If you’re ready to move Pi-hole off your NAS, the process takes less than an hour. Before starting, ensure you have a Raspberry Pi (any recent model will suffice), a microSD card, and a suitable power supply. It also helps to have a keyboard and monitor for initial setup, though SSH works fine once the OS is running. Preparation is key, so have your Pi-hole backup file ready before you start.

1. Back up your existing Pi-hole configuration from the admin interface on your NAS.
2. Flash the Pi-hole OS image onto a microSD card using Raspberry Pi Imager or Balena Etcher.
3. Boot the Pi and connect via SSH, then install Pi-hole using the official one-line installer.
4. Restore your backup to import your previous settings, lists, and groups.
5. Update your router or DHCP server to use the Pi’s IP address as the primary DNS.

After completing these steps, your Pi-hole should be live and ready to handle requests. You can test it immediately by visiting a few ad-heavy sites or checking the query logs. If you want to go further, consider adding Unbound for recursive DNS resolution or pairing it with a secondary Pi for failover. It’s a low-cost upgrade that gives your network serious resilience.

What changed after the move

Fewer headaches, faster responses, and peace of mind

The first thing I noticed after the migration was how much faster DNS queries were resolved. Because the Pi handles nothing else, response times dropped noticeably, even during periods of high traffic. Websites loaded more quickly, smart home devices connected instantly, and network responsiveness felt sharper overall. It was a subtle improvement, but one that became impossible to ignore after a few days.

More importantly, my entire setup feels less fragile. I can reboot the NAS without worrying about killing the internet for every device. Routine updates no longer turn into troubleshooting sessions, and I haven’t had to manually restart Pi-hole once since moving it. It’s been quietly handling tens of thousands of requests each day without a hiccup, and that kind of consistency makes a big difference.

That reliability changed how I think about my home lab. Some services are fine to stack on shared hardware, but critical infrastructure, such as DNS, deserves its own dedicated lane. The Raspberry Pi provided me with that separation, and it hasn’t let me down yet. The move didn’t just fix a problem, it reshaped how I approach redundancy and reliability in every other part of my setup.

A small change with a big payoff

Moving Pi-hole off my NAS didn’t just improve reliability, it simplified my whole network. By giving DNS its own space on a low-power Raspberry Pi, I eliminated an invisible point of failure and gained a faster, more stable setup. It’s one of those rare upgrades that costs almost nothing yet makes everything else work better.