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Well, if it was for human I'd actually prefer 80 than 70, I hate the cold
We just try to keep within standards as much as possible. I just find equipment lasts longer at the lower temps honestly.
https://www.datacenterknowledge.com/equinix/hot-here-raising-temperatures-data-centers-good-hardware
https://avtech.com/articles/4957/updated-look-recommended-data-center-temperature-humidity/
Humidity is a hard one to control though. We've managed to do both using our in-row units over the standard floor or room units. Its made controlling row-based cooling so much more efficient, our units run at 20% workload during normal day running, even last week we had a high week around 92 to 94 outside, it was bad, they were running around 30% that week.
In the winter we pull in outside after running through scrubbers and dehumidifiers, drops costs by more than half during those months.
This is actually probably the most pervasive myth that hardware prefers cold.
The most sensitive part -> HDDs, have zero correlation to failure rates up to 40C intake temp (According to research done by google, already like 15years ago). Go figure.
On the flip side, NAND Flash lasts longer if it runs a bit hotter.
Usually issue is too low humidity, but once again, reality is stranger than fiction -> Makes no difference.
The way you guys are handling is exactly as described earlier -> The expensive way to do things, for limited gains.
Further, you probably run way more expensive chillers than needed, yet you only utilize 30% leaving 70% on the table. Well yea you always need safety margin, but i'd say 90% utilization out of say 20 units is better than 30% from 4 units.
But to each their own
There is a market for what you offer. You even might be able to offer that 0.01% of more uptime or so.
Our current DC has 5 big AC units, 1 small unit. Small unit is backup of backup (and very ancient). On top of that we run outside air circulation year around. We allow ambient to reach up to 40C during AC maintenance etc. and used to always keep at 30C.
We typically have very low humidity, and rather stable temperatures, during winter we reach ~1.10PUE ratio, and i think the worst measurement was around 1.4 in summer with old ACs units on their way out.
We don't use chillers
they throw too much humidity into the air and the expense is too much when doing it isle based for little gain. When doing it isle based we can have 1/8 of the initial upfront cost compared to other DCs, and use more electrically efficient blowers and condensers than typical chillers since we aren't trying to cool whole areas, just two little isles. Chillers waste electricity like its no ones business 
Hence why Google needs to operate so high and worry about their PUE. Surprisingly part of our design we stole from one of their Columbus DCs.
It also allows us to have 3 redundant units per room, at 1/8 of the cost of typical DC cooling setup.
Our units and setup use very little daily kWh cost to keep us at that threshold mentioned previously, because of how we did it, they seldom ever have to run at full-bore or even close.
Additional benefit, by not keeping our rooms so hot, we reduce hot air emissions into the atmosphere through leaking.
Strange you mentioned Google, MS actually did a different project where they sent small DC's into the ocean, for cooling yes, but also for low humidity and nitrogen.
https://www.microsoft.com/insidetrack/blog/how-microsoft-kept-its-underwater-datacenter-connected-while-retrieving-it-from-the-ocean/
But yes, to each his own, it all works good
Chillers remove humidity from the air. I meant with chiller an AC unit.
That is why you need drains for them.
You must be mistaking a chiller with "swamp cooler", something which cools by humidifying the air. This is completely different thing and rarely used.
But since you talk about huge amounts of electricity, you must be talking about AC units then. They typically these days have efficiency for cooling (SCOP) values higher than 5 .... nope i'm not joking. I think ours consume have in the range of 3-5 for the panasonic, and toshibas have a little bit better if i recall right they were more like 4-6 ratio. It depends also on the temp around the outside units.
Tbh, at this point i have NFI what you are talking about.
This sounds rather interesting, I know you said it is conceptual right now, but any idea when this could happen roughly? Affordable colo with also affordable bandwidth in Finland is something I definitely could want, especially if you can also offer easy hardware purchase or the eBay thing you mentioned etc.
Sorry no timeline or even certainty this would happen, this is just something we are considering if this project realizes.
I got offer from Tietokettu:
Can you match this? xD
lol, not a chance. 500W electricity alone costs more than ~24€ a month.
They would have to get electricity for something like 5cents all included to cover even electricity + cooling, perhaps even less. Grid fees + taxes typically exceed that alone.
would be curious to know where they have their stuff. Also what's that metric app you showed?
Further company info:
https://www.finder.fi/Autokorjaamo+ja+autohuolto/Hd-Decor+Oy/Lempäälä/yhteystiedot/915710
A car repair shop? Barely any revenue at all.
Registered in 1988?
other site for info: https://vainu.io/company/hd-decor-oy-taloustiedot-ja-liikevaihto/71382/yritystiedot
Revenue: 89.1€
No not thousands, YES that is under 100€ of revenue. Less than it costs to maintain a LLC in Finland monthly.
Apparently the "CEO" / "Entrepreneur": https://www.linkedin.com/in/kimi-syrjä-552745176/
Located in Riihimäki. Sounds like "inherited" company from his dad. Says "22 year old boy", looks more like 15.
Site hosted at Elmo: https://www.elmo.fi/
... Sounds like sending a server there is akin to a blackhole. You are not going to get it back nor get any kind of signal from the server back to you
Oh well everyone starts from somewhere
metric app is ping.pe
Now we are in core of thread title, I think @stefeman just presented us the ultimate version of lowend colocation
Price is good.
that's cool, thanks for sharing!
lol, yea! Perhaps involucration included free of charge?
Yolo xD