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Commander Kinsey Commander Kinsey is offline
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Default Why does my server's redundant supply only have 12V?

On Sat, 25 Apr 2020 00:35:12 +0100, Jasen Betts wrote:

On 2020-04-23, Commander Kinsey wrote:
It's an old Dell R410, with supplies DPS-500RB (12V only) and D480E-S0 (12/5/3.3V). If the second one died, the first one can't make the server still run, as there's no 5V or 3.3V!



from the manual:

" 4.1 Power Supplies
" The R410 is powered by a non-redundant 480 W power supply (Dell P/N
" F238K) and redundant 500 W power supply (Dell P/N F649J).

Seems to be some sort of marketing speak (by which I mean incompetent or
intentional unthruths).


That sounds likely.

It seems the 500W unit is hotplugabble and can replaced from the back
of the machine (like on machines with redundant power-supplies)
https://picclick.com/LOT-OF-2-Dell-H...031920537.html

However the 480W is cabled to the main board and you need to open the case and
unlug the cables to replace it.
https://www.blackmoreit.com/h410jd48...-d480e-s0.html


So if the 500W failed, it would keep running, but if the 480W failed, presumably it would shut off since there's no longer any 3.3 or 5V? So unless I need more than 480W, the 500W supply is pointless, unless it makes the 480W last longer?