On 25/10/2019 17:11, Iain R. Learmonth wrote:
[...]
I don't understand why the power supplies are so overspec'd. Maybe for
older power hungry hard drives or something.
Hi, Iain.
Server PSUs are overspec'ed for at least two reasons: One is peak
start-up 'inrush' currents, and another is a safety margin for
reliability because if you run a PSU at close to its designed maximum
capacity you will shorten its life in comparison to running an
over-spec. PSU with the same load. This is a 'cheap' alternative to
using redundant PSUs.
I've got a 1,000W PSU in my main Minke server "sei", which generally
pulls less than 500W total (incl. disks and GPGPU) when it's working hard...
Bye,
Tony.
--
Minke Informatics Limited, Registered in Scotland - Company No. SC419028
Registered Office: 3 Donview, Bridge of Alford, AB33 8QJ, Scotland (UK)
tel. +44(0)19755 63548 http://minke-informatics.co.uk
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