Hi friends. I’m a newbie in self-hosting, though I’ve been managing (virtual) linux servers at work for a couple of years. I’m completely ignorant on the hardware choices out there, hopefully you can point me to the right direction.
Here are my requisites:
- Low power consumption, I plan to have it connected 24/7 and I’m kinda concerned on how much it will impact the electricity bill
- Ethernet port, preferably gigabit but whatever
- Graphical performance is not important as I don’t plan to connect it to any display. As long as I can ssh into it, I’m good.
Services I plan on installing, for starters:
- casaOS
- pi-hole, or equivalent
- Home Assistant
- Kitchen Owl (nice to have)
- Paperless-ngx (nice to have)
I live in europe and my budget is around 80 euros or so. Thanks in advance!
Risking sounding like a broken record, I always suggest Tiny/Mini/Micro 1L form factor office PCs. Lenovo, Dell, and HP all create ultra small office PCs that make great low power servers. A Pi will use 5-9w at idle, while these PCs will use 11-13w idle. They also use more standard components such as NVME drives, 2.5" drives, and replaceable RAM. Easy to find under $100 USD used, I’m sure you can find them under 100 euro.
Bonus: there is a literally endless supply of used x86 SFF hardware from large institutions, so unlike SBC’s, there’s no special, weird supply chain managed by an English educational nonprofit that could just suddenly decide to not sell to the public for years at a time.
SFF = Small Form Factor. It’s smaller than traditional ATX computers but can still take the same RAM, processors and disks. Motherboards and power supplies tend to be nonstandard however. Idle power consumptions are usually very good.
USFF = Ultra Small Form Factor. Typically a laptop chipset + CPU in a small box with an external power supply. Somewhat comparable with SBCs like Raspberry Pis. Very good idle power consumption, but less powerful than SFF (and/or louder due to smaller cooler) and often don’t have space for standard disks.
SBC = Single Board Computer.
Hi, sorry I just saw this. “SFF” is short for “small form factor.” It’s just industry jargon for “a small PC.” They tend to be designed to use less power which makes them a good fit for home servers. Pretty much any line of PC sold to businesses, like Dell Optiplex or HP EliteDesk, will have small form factor variants.
Good point.
The Pi Zero is 2w max… It’s downside is it draws 2w MAX. Power is power, only so much you can do in 2w. As you pointed out, the 4 and 5 can do more, because they can draw more, (or they draw more so can do more, it’s all related).
The key seems to be ability to minimize the idle power while still capable of ramping up to something useful when you need it - like the micros you’ve listed.
Try a used laptop. Cheap, power efficient, built in UPS, small. Can be quite powerful and some are even upgradable
Dammit, I have a few of those, you’re killing my excuse to buy a new toy!
Let me help you with that: what if you need more power? or what if you need something smaller due to size constraints or maybe what if the old battery can’t handle 24/7?. Pick one!
As a point of reference regarding power consumption:
I’ve been running a desktop non-stop for the last ten years (built as a gaming rig) as a file/media server, so it’s probably the worst thing you can run this way, power-wise. Has an 800 watt power supply, running windows.
I’ve done the math many times, costs me about $1/day in power at mostly idle.
Just presenting a worst-case example as a guideline.
I’ve recently spun up a Raspberry Pi Zero W for PiHole, DHCP, DNS, Tailscale, Joplin and Bitwarden. It’s maximum power draw is TWO WATTS. Haha
Currently running a watt meter on the desktop, should have some decent actual numbers from it soon, but can’t imagine idle is any less than 50 watts.
So there’s two extremes. Don’t be me (looks like you aren’t!)
Edit: I wouldn’t recommend the Zero W for this, it’s underpowered. I’m already overloading it with just PiHole and Tailscale, honestly.
Throwing in my own data, I have a small server rack at home that runs a brocade icx4630 switch and dell r720, idles around 250w. My desktop setup, monitors, amp, computer itself etc idles around 200w.
Adding my data as well:
My server is diy desktop pc - mbo MSI Z270-A PRO with celeron G3930 and 16GB RAM, 3x SSD on 550W PSU, idles at 23W. After adding another 3.5" HDD consuption went up to 34W. 34W in Ctoatia is around 34€ a year.
Some SFF PCs are at 10-15W. SBCs like rpi should be below 10 W, but dont think you can get anything new for 80€
Yeah same. I have several machines that whirrr all the time. The power cost and usage is fairly negligible. The real costs in the house are appliances. OP will save more energy by getting a more power efficient fridge or dishwasher than worry about a computer being on in the closet
I’ve done a lot of math around this stuff, including measuring device consumption directly with smart switches.
Refrigerator or freezer will average about 70watts/hr. That’s a little over half what my desktop does. Granted, I can’t really get rid of the fridge, haha.
Big consumers for me are refrigeration, dishwasher, and that desktop. It alone is almost 90kw/hr per month. At my rates that’s currently $25/mo. A new mini pc would pay for itself in a matter of months.
Pi Zero could be underpowered but the bigger pi’s sound like a perfect match. I would recommend looking into a used pi 3 or 4, because the pi 5 is new and always out of stock (at least in europe) so you pay around 150$.
Look into a NUC on ebay. I was able to snag a new 11th Gen i3 for 200 eur. Power draw is about 7w with a headless Debian. Running a media server, nextcloud, pihole, an arr stack and I’m planning to add home assistant and a zigbee bridge which I now run on a pi.
If you aren’t planning to run to much on it a rpi4or5 will actually be enough and these things can draw 15 on absolute max load.
I have an Intel NUC I got on eBay for £50. It’s running 30 containers, 10W draw
