[ADefenestrator]

I haven't dug too deeply, but it's unclear whether anything but the Asrock Rack boards have full validated ECC implementations for Ryzen (vs just using the memory but ignoring ECC), and I think that may depend some on which Ryzen CPU is used (maybe PRO-only). I'd love a source of better info there, though.

You're right though - since the client's doing the work and they have a lot of redundancy/diversity in the storage it's not as big of a deal for them as it would be for us. I'd be a bit wary because the client-only verification does mean that there's no verification-with-ECC step in the entire chain, but I'm not sure that's significantly worse in terms of actual risk.