Re: "Hypothetical" Datacenter Overheating

[Nathan Ward via NANOG <nanog () nanog org>]

On 16/01/2024 at 10:50:13 PM, Saku Ytti <saku () ytti fi> wrote:

> On Tue, 16 Jan 2024 at 11:00, William Herrin <bill () herrin us> wrote:
>
> You have a computer room humidified to 40% and you inject cold air
>
> below the dew point. The surfaces in the room will get wet.
>
>
> I think humidity and condensation is well understood and indeed
> documented but by NEBS and vendors as verboten.
>
> I am more interested in temperature changes when not condensating and
> causing water damage. Like we could theorise, some soldering will
> expand/contract too fast, breaking or various other types of scenarios
> one might guess without context, and indeed electronics often have to
> experience large temperature gradients and appear to survive.
> When you turn these things on, various parts rapidly heat from ambient
> to 80-90c. So I have some doubts if this is actually a problem you
> need to consider, in absence of condensation.

Here’s some manufacturer specs:

https://www.dell.com/support/manuals/en-nz/poweredge-r6515/per6515_ts_pub/environmental-specifications?guid=guid-debd273c-0dc8-40d8-abbc-be059a0ce59c&lang=en-us

3rd section, “Maximum temperature gradient”.

> From memory, the management cards alarm when the gradient is exceeded, too.

--
Nathan Ward