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195 points tosh | 1 comments | | HN request time: 0.229s | source
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shivak ◴[] No.42208324[source]
> > The power shelf distributes DC power up and down the rack via a bus bar. This eliminates the 70 total AC power supplies found in an equivalent legacy server rack within 32 servers, two top-of-rack switches, and one out-of-band switch, each with two AC power supplies

This creates a single point of failure, trading robustness for efficiency. There's nothing wrong with that, but software/ops might have to accommodate by making the opposite tradeoff. In general, the cost savings advertised by cloud infrastructure should be more holistic.

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1. MisterTea ◴[] No.42208787[source]
> This creates a single point of failure,

Who told you there is only one PSU in the power shelf?