[lillecarl]

Yeah but the failure rate of an analog piece of copper is pretty low, it'll keep being copper unless you do stupid things. You'll have multiple power supplies provide power on the same piece of copper

[hn-throw]

TL/DR, isnt there a single, shared, DC supply that supplies said piece of copper? Presumably connected to mains?

Or are the running on SOFCs?

[mycoliza]

The big piece of copper is fed by redundant rectifiers. Each power shelf has six independent rectifiers which are 5+1 redundant if the rack is fully loaded with compute sleds, or 3+3 redundant if the rack is half-populated. Customers who want more redundancy can also have a second power shelf with six more rectifiers.

[hn-throw]

I'm going to assume this is on 3 phase power, but how is the ripple filtered?

[applied_heat]

Inductors and capacitors usually