Is this "full" ECC, or just the baseline improved ECC that all DDR5 has?
Either way, on my most recent NAS build, I didn't bother with a server-grade motherboard, figuring that the standard consumer DDR5 ECC was probably good enough.
This is full ECC, the CPU supports it (AMD Pro variant).
DDR5 ECC is not good enough. What if you have faulty RAM and ECC is constantly correcting it without you knowing it? There's no value in that. You need the OS to be informed so that you are aware of it. It also does not protect errors which occur between the RAM and the CPU.
This is similar to HDDs using ECC. Without SMART you'd have a problem, but part of SMART is that it allows you to get a count of ECC-corrected errors so that you can be aware of the state of the drive.
True ECC takes the role of SMART in regards of RAM, it's just that it only reports that: ECC-corrected errors.
On a NAS, where you likely store important data, true ECC does add value.
The DDR5 on-die ECC doesn’t report memory errors back to the CPU, which is why you would normally want ECC RAM in the first place. Unlike traditional side-band ECC, it also doesn’t protect the memory transfers between CPU and RAM. DDR5 requires the on-die ECC in order to still remain reliable in face of its chip density and speed.
The Aoostar WTR max is pretty beefy, supports 5 nvme and 6 hard drives, and up to 128GB of ECC ram. But it’s $700 bare bones, much more than these devices in the article.
Aoostar WTR series is one change away from being the PERFECT home server/nas. Passing the storage controller IOMMU to a VM is finicky at best. Still better than the vast majority of devices that don't allow it at all. But if they do that, I'm in homelab heaven. Unfortunately, the current iteration cannot due to a hardware limitation in the AMD chipset they're using.
I have the pro. I'm not sure if the Max will do passthrough but a quick google seems to indicate that it won't. (There's a discussion on the proxmox forum)
One of the arm ones is yes. Can't for the life of me remember which though - sorry - either something in bananapi or lattepanda part of universe I think
I'm still running my gen8 microserver - it was <200 GBP when I bought it something like 9 years ago, and I still haven't found anything worth replacing it with.
With modern HDDs I can however saturate the SATA controller, whilst it has 2x SATA 3 and 2x SATA 2, I can only achieve ~5-6 Gbps cumulative, not the 18Gbps you would expect. It's certainly not a disaster, but does mean writes especially are slower than expected (2x write amplification).
