What's your server wattage?

submitted by johnnixon

I'm in the process of wiring a home before moving in and getting excited about running 10g from my server to the computer. Then I see 25g gear isn't that much more expensive so I might was well run at least one fiber line. But what kind of three node ceph monster will it take to make use of any of this bandwidth (plus run all my Proxmox VMs and LXCs in HA) and how much heat will I have to deal with. What's your experience with high speed homelab NAS builds and the electric bill shock that comes later? Epyc 7002 series looks perfect but seems to idle high.

Log in to comment



I've got a 3 node Proxmox/ceph cluster with 10G, plus a separate Nas. They are all rack mount with dual PSU. Add in the necessary switching, and my average load is about 800w. Throw my desktop (also on 10G) into the mix and it runs 1.1kw.

That's roughly $50-60 extra in electricity costs for me monthly.


Would be around 300€ in Germany, on a cheap contract. Limiting myself to one combined NAS/application server atm, with the others turned on only if I want to try sth out.


I ise about the same. But that is more due to the hardware I got being a bit older. 2 dell R710s 1 R510 and a custom build server. Everything is still 1g. In my case electricity is not a big deal due to solar. We produce much more then we can use our self.

johnnixon [OP]

I'm afraid of dumping 500+ watts into a (air conditioned) closet. How are you able to saturate the 10g? I had some idea that ceph speed is that of the slowest drive, so even SATA SSDs won't fill the bucket. I imagine this is due to file redundancy not parity/striping spreading the data. I'd like to stick to lower power consumer gear but ceph looks CPU, RAM, and bandwidth (storage and network) hungry plus low latency.

I ran proxmox/ceph over 1GB on e-waste mini PCs and it was... unreliable. Now my NAS is my HA storage but I'm not thrilled to beat up QLC NAND for hobby VMs.


My 10G is far from saturated, but I do try and keep things using RAM where possible. I figure that with 100gb of DDR4 in my main server, that should be able to provide enough speed for a 10G link.

I've got ceph running on Intel Enterprise SSDs, so they are pretty quick.

I also tried running ceph on 1G. I found it unreliable as well.

Rizilia , edited

Around 100 Watts for - NAS with 4x3.5" HDD, - Minisforum HM90 for Proxmox with 2x2.5" HDDs, - 16 Port TP Link PoE Switch, - TP Link router - 2x Raspberry Pi 4b

But everything with gigabit speed. Doesnt need more at home


Minisforum HM90 for Proxmox with 2x2.5" HDDs

How did you connect HDDs to that thing?


Inside the bottom tray you have two cutouts in order to put two 2.5" HDDs/SSDs in


Well look at that, it sure does. Too bad they don't make those anymore.


If you're just running home automation, you do not need an Epyc 🤣

Get a low power anything to just run what you need.

wreckedcarzz , edited

I just moved my home assistant docker container to a new-to-me Xeon system. It also runs a couple basically idle tasks/containers, so I threw BOINC at it to put it to good use. All wrapped up with Debian 12 on proxmox...

(I needed USB support for zigbee in ha, and synology yanked driver support from dsm with the latest major version, so 'let's just use the new machine'...)

johnnixon [OP]

I looked at Epyc because I wanted to bandwidth to run u.2 drives at full speed and it wasn't until Epyc or Threadripper that you could get much more than 40 lanes in a single socket. I've got to find another way to saturate 10g and give up on 25g. My home automation is run on a Home Assistant Yellow and works perfectly, for what it does.

just_another_person , edited

Some unsolicited advice then: don't go LOOKING for reasons to use the absolute max of what your hardware is capable of just because you can. You just end up spending more money 🤑

For real though, just get an N100 or something that does what you need. You don't need to waste money and power on an Epyc if it just sits idle 99% of the time.

johnnixon [OP]

What I need is a 10g storage for my Adobe suite that I can access from my MacBook. I need redundant, fault tolerant storage for my precious data. I need my self hosted services to be high availability. What's the minimum spec to reach that? I started on the u.2 path when I saw enterprise u.2 drives at similar cost per GB as SATA SSDs but faster and crazy endurance. And when my kid wants to run a Minecraft server with mods for him and his friends, I better have some spare CPU cycles and RAM to keep up.

MangoPenguin , edited

You could technically do that from like 2x ~$150 used business desktop PCs off ebay, 10th gen Intel CPU models or around there with Core i3/i5 CPUs.

Throw some M.2 SSDs in each one in a mirror array for storage, add a bit of additional RAM if needed and a 10G NIC. Would probably use about 30-40W total for both of them.

Minecraft servers are easy to run, they don't need much especially on a fairly modern CPU with high single thread performance, and only use maybe 6GB of RAM for a modded one.

You're not asking for a whole lot out of the hardware, so you could do it cheap if you wanted to.

just_another_person , edited

Get a Drobo if you're that worried about that kind of access then. Make it simple.

Otherwise anything with two NICs is the same thing.


I'm running my smart home entirely from a single NUC running proxmox with VMs and LXCs for my services. It's pulling ~7W on average

Pete90 , edited

You most likely won't utilize these speeds in a home lab, but I understand why you want them. I do too. I settled for 2.5GBit because that was a sweet spot in terms of speed, cost and power draw. In total, I idle at about 60W for following systems:

  • Lenovo M90q (i7 10700, 32GB, 3 x 1 TB SSD) running Proxmox, 15W idle
  • Custom NAS (Ryzen 2400G, 16GB, 4x12TB HDD)v running Truenas (30W idle)
  • Firewall (N5105, 8GB) running OPNsense (8W idle)
  • FritzBox 6660 Cable, which functions as a glorified access point, 10W idle

With 25 GbE, even 10, I'd be tempted to PXE boot client systems. Maybe still have a local PCIe SSD for windows game files.

Dunno how that would actually work with Windows, but it was fun when I did it for beowulf nodes. Setting RPis to netboot is a little involved, but you can create an OSMC image and give all your TVs a consistent 'smart' interface. You don't even need 10GbE to be pretty functional for the Pi, but my experience is that WiFi is not fast enough.

Saik0 , edited

5 node proxmox cluster (each node on 40gbps networking[yes ceph...], ~80TB of SSD storage, 180cores, ~630GB of ram total)
1 slow storage node (~400TB)
2x opnsense servers in HA
2x icx7750s
2x icx7450s

PoE to all the things... and 8gbps internet.

Usually run ~15-17amps. So about 2000 watts. It's my baby datacenter.

Sometime this month I'll be installing 25000kwh solar system on my roof and batteries.

As far as heat goes... It's in the garage with an insulated door, heat pump water heater, and there's a tripplite ac unit in the bottom of the rack. The waste air(from the a/c) exhausts outside through a direct vent in the wall. The garage is downright tolerable to me for extended periods of time. The servers don't complain at all.

Reading about all you guys being under 200w or whatever makes me wonder if it's worth it. Then I realize that the cost to do even a 1/4 of what I do in the cloud is more expensive than buying my solar.

Power costs for the rack is about $100-120 a month. If it wasn't for solar.

Edit: 75 LXC containers, 22VMs.


Damn that's a setup alright!

If you're making use of the hardware it's well worth it over anything cloud based for sure.


Edit: 75 LXC containers, 22VMs.

That's a lot of power draw for so few VMs and containers. Any particular applications running that justify such a setup?


That's total draw of the whole rack. No indicative of power per vm/lxc container. If I pop onto management on a particular box it's only running at an average of 164 watts. So for all 5 processing nodes it's actually 953 watts (average over the past 7 days). So if you're wanting to quantify it that way, it's about 10W per container.

Truenas is using 420 watts (30 spinning disks, 400+TiB raw storage...closer to 350 usable. Assuming 7 watts per spinning drive were at 210Watts in disks alone, spec sheet says 5 at idle and 10 at full speed). About 70 watts per firewall. Or 1515 for all the compute itself.

The other 1000-ish watts is spent on switches, PoE (8 cameras, 2 HDHR units, time server and clock module,whatever happens to be plugged in around the house using PoE). Some power would also be lost to the UPS as well because conversions aren't perfect. Oh and the network KVM and pullout monitor/keyboard.

I think the difference here is that I'm taking my whole rack into account. Not looking at the power cost of just a server in isolation but also all the supporting stuff like networking. Max power draw on an icx7750 is 586Watts, Typical is 274 according to spec sheet. I have 2 of them trunked. Similar story with my icx7450s, 2 trunked and max power load is 935W each, but in this case specifically for PoE. Considering that I'm using a little shy of 1k on networking I have a lot of power overhead here that I'm not using. But I do have the 6x40gbps modules on the 7750.

With this setup I'm using ~50% of the memory I have available. I'm 2 node redundant, and if I was down 2 nodes I'd be at 80% capacity. Enough to add about 60GB more of services before I have to worry about shedding load if I were to see critical failures.

Mister Bean

Just out of curiosity, what do you use all that storage for?


On the Sata SSD ceph storage. That's just live stuff on the containers/vms. I'm at 20% usage of the 70TiB usable at the moment. I don't use it all that heavily. Because of the way ceph works it's really ~23 TiB of usable space and ~4.5 TiB written since it writes 3 copies in my cluster.

On the slow storage node it's running Truenas with 28 spinning disks at 16TB each. 2 hot spares, and 2 ssds each for cache, log, and metadata (eating up total of 36 bays). That's 342.8TiB usable after raidz nonsense. And I'm 56% usage. I have literally everything I've done that I cared to save from like 2005 or 2006 or so. Backups for the ceph storage (PBS). Backups for computers I've had over the years. Lots of linux ISOs(105TiB) archived, including complete sets of gaming (37TiB) variants. Oh and my full steam library as well which currently sits at 14TiB. Flashpoint takes up a few TiB as well...


My pi costs probably around 20 a year lol.


125W (Less than $15/month) or so for - Ryzen 9 3900X - 64GB RAM - 2x4TB NVMe (ZFS Mirror) - 5x14TB HDD (ZFS RAID-Z2) - 2.5GBe Network Card - 5-port 2.5GBe Network Switch - 5-port 1GBe POE Network Switch w/ one Reolink Camera attached

I generally leave powerManagement.cpuFreqGovernor = "powersave" in my Nix config as well, which saves about 40W ($4/mo or so) for my typical load as best as I can tell, and I disable it if I'm doing bulk data processing on a time crunch.


My real server (Nextcloud/NAS/several more vm's) uses 28 Watts on average. In addition, there is one Pi 4B running, and I don't even know it's wattage.

I'm planning on replacing the real server with a new one, with lots of cores and approx. 50 Watts then.


Pi4 tend to stick around 5w


I have an ITX Ryzen 2700X with an arc A380. 3 HDDs and 1 SSD boot drive.

Before some kernel improvements for the A380, my idle wattage was 60W. Without the A380 it was around 35W idle. I am hoping that it is around 45W now because of fixing the high idle wattage of the GPU but I have to measure again.

Performance is great though. Perfect Jellyfin streaming, home automation, document and media management, file sync, recipe management, etc...

People tend to over-spec their servers, in my opinion. Unless you are dealing with more than a few dozen clients or so on one server (or having a many-user dedicated streaming server), you really don't need much.


5950x in an matx board with 15 x 3.5in drives 1 x sata sad 1 x optane u.2 drive (pulls like 10watts) 1 x Nvidia A2000 1 x Lsi 9305 16i 1 x 2.5gbe intel nic 3 x 140 mm fans at full tilt

Runs at like 120 watts at idle, like 220 watts with a good amount of work and peaks at like 320 watts if I make it do a lot of work

just_another_person , edited

What in the world...

Dafuq you doing over there?

  • Fujitsu motherboard
  • Intel pentium G5600
  • 6 HDD (4 x 4 TB 2 x 8 TB) spinned down
  • 2 SSD for proxmox
  • 6 CT and no VM for now

it runs at 16W mostly idle

cryptix , edited

15w Raspberry pi 4 + HDDs


The load on my UPS is around 100-140 watts. That includes my server, firewall, switch, starlink and a unifi access point. I would love to get that power consumption down. I only get 4-5 hours of runtime on battery. Also, the room it's in is small and it gets really hot in the summer time.


I run 3900X with a 40Gbit fiber, packed with HDDs and nvmes. The box fluctuates around 90-110W use.

johnnixon [OP]

Where do you find the bandwidth to do all that? NVME eats it up and the 40g too.


I did ran out of pcie, yeah :-( the network peaks at about 26gbit/s, which is the most you can squeeze out of pcie 3.0 x4. I could move the nvmes off the pcie 4.0 x16 (I have two m2 slots on the motherboard itself), but I planned to expand the nvme storage to 4x SSDs and I’m out of the pci lanes on the other end of the fiber either way (that box has all x16 going to the gpu)


I recently removed my 25Gbps PCIe dual port cards from my 2 servers because they were using 20W more. My entire rack including 2 UniFi PoE connections uses 90 W now (so 110 W just for having 25 Gpbs).

There is some heat from such cards, but usually it gets transported outside fine. The ones I bought did not come with a fan. I think you cannot operate them without one. The heat sinks get very hot.

Decronym , edited

Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

Fewer Letters More Letters
AP WiFi Access Point
DHCP Dynamic Host Configuration Protocol, automates assignment of IPs when connecting to a network
DNS Domain Name Service/System
HA Home Assistant automation software
~ High Availability
LXC Linux Containers
NAS Network-Attached Storage
NUC Next Unit of Computing brand of Intel small computers
NVMe Non-Volatile Memory Express interface for mass storage
PCIe Peripheral Component Interconnect Express
PSU Power Supply Unit
PiHole Network-wide ad-blocker (DNS sinkhole)
PoE Power over Ethernet
RPi Raspberry Pi brand of SBC
SATA Serial AT Attachment interface for mass storage
SBC Single-Board Computer
SSD Solid State Drive mass storage
Unifi Ubiquiti WiFi hardware brand
VPS Virtual Private Server (opposed to shared hosting)

[Thread #782 for this sub, first seen 4th Jun 2024, 04:35] [[FAQ](http://decronym.xyz/)] [[Full list](http://decronym.xyz/acronyms/selfhosted@lemmy_world)] [[Contact](https://hachyderm.io/@Two9A)] [Source code]


Let's see...

My servers (tiny/mini/micros) in total are about... 600W or so. Two NASs, about 15-20W a piece.

I spend a out $150/mo in electricity, but my hot water/HVAC/etc are the big power draw. I'd say about $40-50/mo is what I'm spending on powering the servers in my office.

Definitely puts off some heat, but that's partially because it's all in one rack, and I've got a bunch of other work hardware in there. It's about 2 degrees warmer in my office than the rest of my home, but I also have air cycling all the time since it's a single unit HVAC and I need to keep the air moving to keep it all the right temp in the other rooms anyway (AC will come on more often otherwise, even without my rack).


For my main server only... If HP iLO is to be believed, averaging around 130W.

Running: deluge, homarr, jellyfin, lidarr, navidrome, nextcloud, prowlarr, sonarr, whoogle and a minecraft server (VM) on TrueNAS Scale.

As for everything else (my router, switch and DNS/DHCP server, which is a separate machine, you can add another maybe 50W on top of it...


From the wall I'm pulling 120w

Ryzen 5700G

128GB ram

2tb + 4tb NVMe drive

2 x 20tb HDDs

Unifi Enterprise 24 PoE

Mikrotik RB5009

2 access points

3 cameras

Fiber runs cooler than copper all of my SFP+ are fiber.


I feel almost obliged to ask: what are you running on this monster of a setup?


Mostly for PiHole.


You know he’s just running docker.

DjMeas , edited

I have a small setup for some self hosted apps and media. - Beelink Mini S. - 2 external 5TB drives. - A USB fan used as an exhaust because the SSD inside gets a bit warm.

I think total power is about 30W.


7W I think

qaz , edited

About 30 watts for a old Lenovo Thinkcentre with a i5-6500T and 8 GB RAM in combination with a DAS and 2x2TB HDD's. I'm currently waiting for parts for my new server I'm building, a small N100 Mini-ITX board with 4x4TB HDD's that hopefully has a similar power consumption.

Strit , edited

Mine is about 8W on average.

It's an Odroid H3 that runs Nextcloud, Jellyfin, AudiobookShelf, a bunch of websites and Home Assistant.

It has 2x Sata SSD's connected.

This setup is not high speed at all, so it's not what you asked about. I just answered the headline question. ;)

If any air ventilation fan turns on in the house it uses at least 3x that power, so I don't calculate the price on my servers power draw as it almost not noticable.


I use a Ryzen 5900x, RTX 3080, 2x 10Gbit sfp+ NIC, 128GB ECC RAM, and only 2x 20TB drives at the moment.

For my gateway, I have an Intel N6005 box, I have a managed 2.5/10Gbit switch, and I have a wifi AP.

I have a ton of Proxmox VMs and containers.

All that hovers between 140W to 180W


Thinkcenter tiny, 4 external HDDs, a DAC, a raspi3b+, was like 25W I think.

MangoPenguin , edited

About 120W total for:

  • 2 Proxmox hosts with 4 spinning disks between them
  • Opnsense firewall
  • 24 port GbE switch
  • Fiber ONT
  • Unifi AP
PieMePlenty , edited

I run a NUC11 so about 10W. 15-20€ per annum assuming a single tariff at 0.17€ per kwh. It can use up to 30W but only during heavy load which may be like 8 hours a week. But electricity is also cheaper during off peak hours so it averages to about that (we have 5 tariffs).

Load is NAS, media server, homeassistant and a usb zigbee router, *arr stack.

Power usage was my main concern and wanted something eco friendly.


Actually if anyone has advice I'd love to hear. My server is a b450 mobo with an athlon 320ge. Even with no hard drives spinning it uses 65watts. I don't understand how it is possible. 6 hard drives bring it to 85-90. Running truenas if it matters

I keep it off most of the time to safe power, I was expecting especially with such a cou much lower wattage, like under 20 idle. My assumption is the power supply can't get low enough.


What CPU governor are you using? I saved about 40W idle powerdraw switching to powersave vs the default on a Ryzen 9 3900X.


Is that a bios or truenas setting? The CPU is only 35 watt max


Operating system so TrueNAS in your case


Systems themselves are all around 5-20W, although the ones with mechanical HDDs obviously add their own idle usage.


Intel g3930, 2x8GB RAM, 2x SSD, 1x HDD, integrated 1GB LAN = 30-35W. Kinda cheap here, 30-35€ a year


82.2W average for which I pay 144.6€/a at the moment. That’s for a Ryzen 7 3700X, some hard drives and SSDs and the fiber connection to my basement. I outsourced 90% of media consumption to a VPS though, that’s another 84€/a.

Charadon , edited

The last time I checked, mine runs at about 5-10 watts usually.

  • Intel i7-3770
  • 16gb DDR3
  • 2 1TB SSDs

Are you sure. I was thinking those specs you would be more in the 50-80 watts range.

Charadon , edited

Yep, my homeserver spends most of it's time idling, so power management kicks in.

Now when one of my build VMs are running, it'll get up to that range, but that's why I said it runs at 10 watts *usually*


I have four Raspberry Pi 4 running, so that's 15W max each or 60W max total. Usually they consume much much less.