lrwiman wrote:
> *never ever* cheap out on power supplies.
This is good advice, but personally I have never seen the
point of giving every machine in a rack of computers its own
power supply rather than having one big one and just running
DC all the way up the rack. The fact that it is not done
that way seems to be about politics of having AC wall current
rather than engineering efficiency.
Why not have a single (redundant) big 24VDC power supply for
all the boards instead of supplying them all 120VAC?
Would there be a commercial market for such "unicluster"
devices, where multiple independent boards are associated
with a single power supply transformer --- or maybe an alternate
power standard connector which would provide computer voltages
to computer equipment instead of 120 VAC?
Or is the current state of distributed power supplying really
a best practice because it prevents loading problems and
line resistance problems that running DC lines around the computer
room (using Edison wiring rather than a Tesla wiring) would cause?
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