[Beowulf] More about those underwater data centers

[John Hearns]

Jonathan, Stu Midgley will be along in a minute. He can tell us all about
immersion cooling!
A friend of mine operates another type of cluster at a UK lab, which is
immersion cooled.
He calls it the Deep Fat Fryer. I shall refrain from naming the lab!

On Mon, 5 Nov 2018 at 09:24, John Hearns <hearnsj at googlemail.com> wrote:

> Jonathan, the data centre inside the submerged cylinder has air in it.
> The sea water is let in through pipes and a heat exchanger is used to
> water cool the racks.
> I would imagine that the raw seawater is used to conduct heat out of the
> cylinder, and pure water is recirculated through the racks.
> The servers are not immersed in sea water!
>
>
> On Mon, 5 Nov 2018 at 06:27, <jaquilina at eagleeyet.net> wrote:
>
>> Probably a stupid question here,
>>
>> What is the advantage of using salty sea water lets say over for example
>> mineral oil? I have seen on you tube these guys showing that a pc will
>> still run in a fish tank and all components submerged in mineral oil?
>> Yes it will be messier to change components but would the use of mineral
>> oil be more efficient?
>>
>>
>> On 2018-11-04 14:10, Gerald Henriksen wrote:
>> > On Sat, 3 Nov 2018 18:27:05 +0000, you wrote:
>> >
>> >> I’m not sure there’s a huge population of Xcloud-Xbox gamers in
>> >> Orkney.  There's not much daylight this time of year, of course, so
>> >> maybe that's what those Orcadians are up to.
>> >
>> > Likely just a convenient place for a second test unit.
>> >
>> > In a way this is just an extension of the idea/product Sun came up wth
>> > where they put a datacentre in a shipping container with the idea that
>> > you could quickly get the datacentre where it was needed.
>> >
>> > While I wouldn't say this won't fail, I think there is a lot of
>> > attraction to the concept given not just the time lag do build a
>> > traditional data centre (mentioned in the article), but even the cost
>> > of real estate in many/most places people live these days.  Do you,
>> > for one example, want to pay NYC rents or just throw a bunch of pods
>> > in the Hudson?
>> >
>> > I guess once you accept the idea that we no longer maintain these
>> > datacentres in the traditional way - we now just let hardware fail in
>> > place and ignore it until it's time to replace all the hardware -
>> > moving to smaller sealed units doesn't seem to strange.
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