But self-building a NAS is still a problem, and I'm also talking about this [1] article from the same blog:

There are NO low power NAS boards. I'm talking about something with an ARM CPU, no video, no audio, lots of memory (or SODIMM slot) and 10+ SATA ports.

Sure, anyone can buy a self-powered USB3 hub and add 7 external HDDs to a raspbery, but that level of performance is really really low, not to mention the USB random disconnects. And no, port replicators aren't much better.

[1] https://lowendbox.com/blog/are-you-recyling-old-hardware-for...

That would be nice, but Synology doesn't offer that either, no?

The closest thing available now would probably be a Radxa ROCK 5 ITX+, a motherboard with a Rockchip SoC and two M.2 slots, into which you could put their six-port SATA cards. No idea what that whole setup will draw, though.

EDIT: I have to complain about the article you linked. It's certainly true that one should account for power consumption, not just purchase cost, but some crucial mistakes make the article more harmful on the whole.

The author cites 84 W power consumption for an i5-4690, and 10 W for a J4125 CPU, but those figures are the TDP. For all we know, those CPUs could idle at around the same wattage, and from my experience they likely do.

Having done some measuring myself, I'd say the largest source of power draw in an idle NAS will be the PSU, motherboard, and disks. With any remotely recent Intel CPU, it idles so efficiently as to be negligible in a PC.

There are some new NAS boxes hitting the market (UGreen being one of the brands that are cheaper, but also Minisforum) which have solid hardware but aren't locked down at all. They're just x86 boxes with bog-standard hardware so you can just run whatever OS you want, and they support that use case.

Why do you need a bunch of SATA ports? Just get a cheap SAS2 PCIe card on eBay.

There are definitely low power ARM boards with a PCIe lanes. Typically its NVMe, but you can adapt that to 4x PCIe 3.0 which is a lot of bandwidth for HDDs. Not sure why you need a lot of memory for a NAS though, but they do have boards that have 32GB of memory.

What's wrong with this?

https://www.amazon.com/Radxa-5B-Connector-Computer-32GB/dp/B...

And connect a card like this to the NVMe PCIe which you can connect 8 SATA HDDs to with SATA breakout cables.

https://www.ebay.com/itm/155007176276

If you need more than 8 HDDs you can get a SAS2 expander to connect to the SAS2 card and then you could easily connect 24 HDDs with a 6 port SAS2 expander and breakout cables.

Or if you put this small board and card into a server case that has a SAS2 backplane with expander built in, then you can just connect all the disks that way.

Another option, not ARM, but still low power and neat.

https://www.lattepanda.com/lattepanda-sigma

This has Thunderbolt 4 which you can connect to a PCIe slot like this:

https://www.dfrobot.com/product-2832.html

They have a lot of neat stuff, you can get the tiny LattePanda Mu, and dock it in this:

https://www.lattepanda.com/lattepanda-mu

https://www.dfrobot.com/product-2822.html

Why don't you look at Topton's N100 boards with 6x SATA, 2.5Gb LAN, PCIe slot for extra SATA ports and Jonsbo N3 NAS case with it? For $300 you'd have a way better NAS than anything Synology offers.

There are pci boards that let you hook up 4 sata ports to the pci3 on a raspberry pi 5. The drives will be a large part of the power draw, so if you want low power, going for 2 drives is probably better. That probably gets you into the 20-30 watt range

for 10+ sata ports you might as well get an x86 motherboard as it's going to draw lots of power anyway

Unless you plan to power down most of the drives most of the time

It's better now, been annoyed like you but the Rpi5 comes in a 16gb variant and has a PCI-E port that can be extended to 5x SATA or 2x M2. It's not blazing but probably an improvement over my old Celeron J1800 with 8gb of ram.

The Intel N100,etc series of machines seems popular with builders even if the RAM restrictions drives me nuts.

I think the major issue seems to be cases actually, there's tons of small cheap AMD machines from manufacturers like BeeLink that trounce most NUC setups for performance, but like the NUC's as soon as there's disc enclosures the price shoots away.

> I'm talking about something with an ARM CPU,

Why? There is no evidence that ARM is the only power efficient CPU. i5, i3 and n100 are all power efficient.

> no video, no audio

Why? Disable onboard video if you care that much.

> lots of memory (or SODIMM slot) and 10+ SATA ports This eats power, conflicting with the rest of your requests.

> Sure, anyone can buy a self-powered USB3 hub and add 7 external HDDs to a raspbery, but that level of performance is really really low, not to mention the USB random disconnects. And no, port replicators aren't much better.

No, that's not what you do for a power efficient NAS. You build an i3, i5 or n100, turn off all unneeded peripherals, and configure bios as needed to your level of desired power consumption. under 10W is achievable.

Second-hand Supermicro boards with 6, 8, even 12 SATA ports, 8-16 GB of ECC RAM, a preinstalled CPU, and often a passive radiator are pretty accessible or eBay or suchlike. Of course they are old, but if they did not break after 5-7 years in a server rack, most likely they're not going to break for 10 more years in a less demanding environment at home.

I have some quad core celeron board integrated thing. It draws 15watts. I added a PCI-E sata which gave me 6 extra ports. I am sure you can buy better ones.

I used a Fractal Node Case that has 6 drive bays. Installed TrueNAS Scale on an SSD. Swapping drives is a pain as I have to take the computer apart. But that is infrequent. So it is fine.

https://jackharvest.com/ has some DIY options.

This sounds like a fun project to do. Maybe I will look into the technical feasibility of this.

SATA? In 2025? NVMe all the way.

Low power and reliability is why I want to just use my Mac Mini M4 + DAS as storage solution among 15 people. I am not sold on it because Mac Mini has lots of life in it to be solely devoted to this use case.

yup, thats why I alwys end up with microatx board, it just works, it draws power but does the job I need