I shouldn’t have kept the $1,000,000 computer

[@rdspam]

1:06 38C is 100.4F, not 104.

[@andrewanderson6735]

how has nobody replied yet

[@YolandaPlayne]

I think 95 is ideal for servers assuming it stays at the temperature all the time.

[@Tech-NO-City]

Jake is lame af

[@MoGumbo_]

We use celcius so im not sure, but is the difference between 100 and 104 noticeable? a 4 degree Celsius is quite noticable

[@DM-qm5sc]

Steve at gamers nexus has already addressed their inability to get numbers right

[@andyalright]

As a professional contractor, NEVER trust what you get from the "professionals" at the store, always check it, I get the wrong fittings every third order.

[@GodlikeIridium]

No matter what, never trust anyone... These days almost nobody has any respect for his job anymore... And due to the broken education and the missing selection because "You can do whatever you want, no matter your qualifications" most people couldn't do their job correctly even if they wanted...

[@alexander53]

@@GodlikeIridium *old man yells at clouds*

[@superbadisfunny]

​@@alexander53 it's true most people suck at their job. You just be young.

[@alexander53]

@@superbadisfunny doesn’t mean people didn’t suck at their jobs 50 years ago too

[@namajax]

​@@alexander53yeah it really doesn't mean so does it. There were, are, and will be people who are bad at their jobs. Which is, by the way, the point the original commenter made

[@GreaterD]

Dont forget, there is nothing more permanent then a temporary fix

[@GreaterD]

@SanityTV_Last_Sane_Man_Alive no, i mean, that the usual "Temporary Fix" i see be it Programming or Construction is older than me

[@THE-X-Force]

@SanityTV_Last_Sane_Man_Alive It's because "good enough for now" winds up being accepted as good enough forever.

[@advanceddarkness3]

" A temporary fix that works too good, often becomes permanent."

[@nils1953]

It's only temporary if it breaks

[@jonathandodd1729]

Temporarily Forever

[@nicolasayastuy]

Hello, Facilities Manager on a Data Center here. Ideal temperatures, are 21 for intake and no more than 34 on the hot aisle. calculate your warehouse temperatures knowing the desired temperature for your hot aisle. Aim for a hot air temperature and calculate your temperatures from there. Also, Kingspan is way better than any other plywood/GIB/fiberglass solution -money wise- for temperature isolation, is fast and cheap to build with if you measure twice and cut once, and you can replace walls with it (not structurally, but aesthetically) For sound, they are a little bouncy, but you can always use what Generators use for baffling: sound proof walls (made of fiberglass foam with a frame) parallel to the walls and parallel to the noise source kind of like ------------------------------------- wall sound source ->> ==== buffers ------------------------------------- wall

[@Sergix_pt]

Did you also get goosebumps when the inrow inlet temperature raised ? it´s so weird to see someone happy to see the temperature raising!

[@themodfather9382]

comma ai has like 50c on hot and found no bad effects strangely. they dont run storage though

[@bsrrycs]

also work at a data center hope he see's this bc its actually really good advice!

[@maurice6652]

Or just use the thickness vacuum isolation panels.

[@spvillano]

@dewdmcman4321 HD and server fan failure. Had a slightly hotter server room when I was deployed, literally threw at least one server fan per month and reseating to rebuild a RAID was basically at least a daily event. The backplane temperature of our Catalyst 6509's typically ran around 120. We finally, finally, *finally* got a budget for proper A/C, calculated everything out with around a 15% excess cooling capacity, the commander decided to nearly triple the size of the cooling unit, resulting in the damned thing freezing whenever it was below 110 degrees F outside. We're talking two inches of ice encasing the compressor - in a Middle Eastern desert. Gotta somewhat agree on drive RPM, only had one unit, a specialized DB server that needed 7200 RPM drives and that one was a headache. Oh, the command also chose a consumer grade thermostat that, if the unit went into protection, defaulted to off - in a Middle Eastern desert nation. Boy, my ibuprofen bills were lordly! Thankfully, that country wasn't a dry country, so ethanol flowed freely at night...

[@Sazabi4prez]

"What will the landlord say ?" "Screw that guy"

[@hubertnnn]

Yeah, that's probably what the landlord would say.

[@Bowie.Moonen]

@@hubertnnn✨Canada problems✨

[@lefthornet]

It's because Linus and Ivonne are the landlords XD

[@hovant6666]

t. Adam Smith, Mao Zedong, Jonathan Swift, et al.

[@just_HAZEN]

​@@Bowie.Moonen✨️were fuckin sufferin eh?✨️

[@Spiffyskillz]

A friendly local plumber/mechanic designer and long time fan here- you are kind of correct by saying that a closed loop hydronic (heating/cooling) system requires a check valve. However, more specifically, it requires a reduced pressure backflow assembly for cross connection control. Furthermore, a hydronic system likely will run at much lower pressure than city water pressure. A pressure reducing valve will need to be installed as well.

[@Waggles1123]

Yup, plumbing engineer and I was thinking the same thing. They're definitely opening themselves up to contaminating the potable water supply. Now, I'm guessing that the building itself was built to code and has an RPZ from the city main, but since they're just tapping into a hose bib, they've exposed the entire building's water supply to whatever chemical residue was left inside those cooling racks. It's unlikely that it's *actually* contaminated things because there's probably not much or any backflow with their setup, but an AHJ might shut the building down because of the "contaminated" water supply. It's one of those things where I feel like LTT is opening itself up to legal trouble by hacking stuff together. They've done enough plumbing on this channel in the past 1-2 years that I feel like they should at least have a consultant.

[@rioghander2te]

@@Waggles1123 this setup is going to be replaced by a professional in a few months™ anyway, but you're right in that they should've done better

[@Comeyd]

@@Waggles1123unless I completely missed something… Aren’t they isolated from the utility supply? They added water via the tank on the mezzanine which was filled with a toilet valve. What’s there to mix with the utility water?

[@Egor778]

As “plumbing engineers” that’s the thing that got you about the video?? None of Jake’s Hackery or scams?

[@luminatrixfanfiction]

@@Waggles1123 The biggest source of contamination in a heat exchanger system is likely going to be whatever material that makes up the rads and the gunk inside the rads. If the rads are made out of copper core or brass core (which likely has trace amounts of lead lining) that could be hazardous if there's a backflow into the water supply.

[@74rocktiger74]

Not having a Jake "Mint" counter is a miss

[@CaptainBeardsome]

agreed.

[@KarmaIsABitsch]

Was looking for it. Disappointed.

[@trueheart1372]

You will have to do it in the comments

[@Matisaro]

made it a drinking ganme..s..cvsall an abualance.

[@capichow]

😂

[@zachmiller9175]

Working construction taught me that oscillating cutters are good for literally everything. They're not the best at anything but they work adequately if slowly at basically every cutting task, so if you're not sure what cutting tool to use, always grab the vibrator.

[@ZippyDooDa435]

I love mine, it's a game changer with drywall

[@Cain532.]

Did concrete work for a long time, form to pour. Our circular saw died on us and we had to cut through 2x4's with an oscillating cutter... We figured it would be cheaper than driving back to the shop lmao

[@rabidchinchilla3447]

​@ZippyDooDa435 seriously, show me a better way to cut a *clean* hole for a switch box.

[@PsRohrbaugh]

That last sentence sounds like my wife

[@Overmind5000]

Not gonna lie, when I first encountered an oscillating cutter, I gave it the nickname "Metronome on super crack." :P

[@Adyen11234]

Nowadays, we watch this channel more for the crazy modifications to their building than actual tech related stuff.

[@lightningwingdragon]

As someone who just got a job testing boiler chemistry, you should ABSOLUTLEY get a filter for water entering the reservoir from the main, at the bare minimum. You should also think about regually testing the water, and adding chemicals, to extend the life of the tubes within the systems.

[@Steamrick]

Don't worry, it'll be only temporary for the next three or four years until they realize it's gunked up and not working anymore.

[@legominimovieproductions]

Wouldnt a proper cooling liquid be the better option?

[@user-fw6eg3hc8f]

@@legominimovieproductions So water with chemicals added??? Nah not really water is an excellent cooling solution

[@legominimovieproductions]

@@user-fw6eg3hc8f normal coolants do not contain water, not even a little bit. Because water corrodes all types of pipes, metal, plastic,... thats why your AC doesnt run with water but coolant, thats why servercooling is not done with water,...

[@sebimoe]

@@legominimovieproductions sorry but what is a "normal" coolant? You mean the one in your car? The one used in water cooling pcs? Water is not that great at phase change based systems, I will agree. I would love to hear more about plastic corrosion caused by water.

[@waterslug4263]

LTT is the embodiment of we never have time to do it right the first time but we always have time to re-do it.

[@toddblankenship7164]

you get multiple vids that way.

[@zJoriz]

Sounds to me more like the skimping on details the first time will eventually lead to "fixing this is urgent so we'll have to". There's having time, and there's making time.

[@toddblankenship7164]

@@zJoriz ya but all that time is potential billable video time.

[@zJoriz]

@@toddblankenship7164 Fair enough

[@andrewsprojectsinnovations6352]

Hey, in cases like this, the "quick and dirty, we'll fix it later" approach can make a lot of sense: they are definitely using the version from this video as a mere prototype to work out any kinks and come up with improvements for the professionally-installed version. They already expressed plans to have plumbers later and do this right and discussed some future improvements, and what looked like a single afternoon of work by a handful of guys was enough to prove the concept. On the other hand, imagine going through all the work and expense to get this installed professionally, only to find out that it doesn't work because they overlooked some major detail when designing it and need to hire them back to fix it like they almost did with the filter? What if some safety shutoff was installed in these radiator units that prevented them from being used to expel hotter air than they intake, considering how they were intended to be used? A quick and dirty proof-of-concept prototype can help prevent much worse wastes down the road. That being said, while I see this particular case as justified, Linus is far from off the hook for things that should have been done right the first time. Some of his past data management practices were pretty sketchy for such a technically focused company. Even on this project, while the prototype nature of this iteration is fine in my eyes, they were a bit careless with the water versus electrical panel.

[@SFSBP]

This really made me understand the concept your mentioned in the last cooler video where you say they pump the hot air elsewhere and cool the whole room and deal with the hot air somewhere more ideal. This is definitely super cool (not a pun) and can’t wait to see what you do with the other 4 room coolers.

[@Doofindork]

My head is actually like, buzzing after this video was over. I can only imagine how loud it must be in person.

[@mauicez5040]

work in a datacenter.... just imaging a high pitch scream 24/7 and you pretty much got it nailed. sound canceling / deadening headphones are a life saver.

[@luis4290]

Have been for hours in our server room, it is indeed really loud, but you kind of get used to it. You just feel a huge relief after leaving the room.

[@simpson6700]

it baffles me that they are not wearing ear protection

[@TheSprockee]

@@simpson6700 it's fine, they'll never hear those frequencies again.

[@LtdJorge]

​@@mauicez5040 noise canceling headphones don't protect. I hope you're using regular ear protection on top.

[@adampetkus]

I work in Building Automation, so watching this series on cooling and hearing the ideas you're talking about with actuators and temp sensors is essentially my job and it's very cool to see the ideas and knowledge being discussed from the perspective of people who don't work in the Building Automation field. There's a lot of potential with what you're doing and could go well beyond what you have so far. Keep plugging away! Looking forward to seeing how this continues to evolve.

[@stupiduser6646]

I run a small 24 rack data center that uses these exact in row coolers. The valve is to balance pressure if using multiple coolers in a loop.

[@mindinversions4487]

'it's occured to me we've never actually performed a test of this equipment. What's to worry? Each of us is wearing an unlicensed nuclear accelerator strapped to our back". 😂

[@ConeJellos]

I blame myself.

[@chalor182]

So do I.

[@joe6144]

Indeed

[@jeremylindemann5117]

Don't cross the (cooling) streams.

[@bjammin187]

Switch me on, will ya?

[@BrandonRogers91]

As a former datacenter tech Linus is so right about how exhausting it is being behind the server output. The sensory inputs from the sound, air movement, and heat and it’s a dry heat at that. It dries you out and makes you feel terrible quickly.

[@oscarpeters5309]

linus was making a pun... because it's the server exhaust

[@isaackvasager9957]

@@oscarpeters5309 A pun is punnier when it relates to the reality of what one is trying to actually express.

[@bsrrycs]

very true but those cold isle in the summer are so nice and so close :)

[@ThisGuyDrives]

So, it's the same as living in Southern Arizona, got it.

[@bunnysuitlewds126]

I personally prefer a dry heat over humid heat.... 80-90% humidity at 90-95 is worse than 120 at 10-30% humidity.

[@ChristopherHallett]

"It's 32 degrees in here, it is HOT" - meanwhile Australians: oh, that's a lovely Spring day!

[@CASyHD.]

yeah but that air blowing is hot

[@Swift_lol]

me when 39 C :

[@TomStorey96]

Meanwhile Brits: the earth is on fire

[@high-captain-BaLrog]

meanwhile indians: oh look, winter's here

[@technerd9655]

And to most Canadians born here 15°C is nearly decent, to me, it's a nice spring day!

[@mgm1018]

These are my favorite type of LTT videos, when you build crazy, but cool things for computer/servers or home theater

[@Rohan3CAV]

Same

[@AstradTheCynic]

Cool things *wink wink*

[@Dallen9]

Fun plumping tip: if your using pvc glue and you're not using the primer the glue will fail to properly set. so not buying the double pack can cost you more in the long run causing you to buy more glue when all you had to do was buy the glue and primer, prime both joining ins, glue one side, and put it together. Anyone who tells you to buy only the glue is just wanting to cause you years of frustration. Since this set up is temporary (just a few months if this video is to be believed) i don't see Jake's bad pumping job going to cause a major failure. in fact you can pull everything apart and fix it right later when you do the more permanent set up. Also I'd rust treat that bottom drip/condensation pan so that part don't fail(use like Rust-Oleum brand Rust-Oleum or rust be gone or something like that).

[@Dallen9]

@@danielpicassomunoz2752 yes. it's usually a can of purple liquid with purple labeling.

[@absalomdraconis]

​@@Dallen9: As I recall, the primer is literally just a diluted version of the glue. It _should_ be sufficient to just use the regular glue like the primer, and then go back later to use it as proper glue.

[@Dallen9]

@@absalomdraconis it's not, may have been at one point, cause some glues change properties at different Dilutions (like you can use fresh elmer's glue as a substitute for hand soap when you dilute it with water)(can also depend on what it's diluted with also). they've since changed the formulation cause people overthink things and don't understand how anything works anymore or the changed the the wording of the chemicals to make it seem like they're not doing that.

[@jeffreyeaton5214]

Depends on usage; For not leaking fluids, absolutely. In electrical work, we basically never use the primer, just the glue, because we aren't trying to prevent fluid leaking, just that the conduit/fittings don't separate and expose the wiring.

[@Dallen9]

@dewdmcman4321 Nice to know you're the luckiest DIY plumber in the world. And no not all PVC glue "welds" the pipes together. I get not wanting to waste money on something that seems excessive but doing it right the first time with the right tools, always gives no room for failure. yeah you can get some 80 grit sand paper prep your pieces and just glue it together and you could never have a problem again. All you did was if someone was watching you guaranteed that if they weren't noting every detail of what you were doing they will fix a pipe wrong and not know what they did wrong. Yeah primer isn't always necessary but when you use it it gives you room to guarantee success.

[@Moose1207]

Industrial A/C guy here, Referring to Jake in the beginning A closed loop chilled water system does not lose water over time, or evaporate out. That is why it is a closed loop, they add water and chemicals one time and that's it.Unless the system is drained for repair, or leaks water never needs to be added again. Normally you have a closed chilled water loop, and your Chillers will have an open condenser loop, that cools the Machines, and the heat you brought in from the building. This loop does lose water through evaporation in your cooling towers. The condenser side IS hooked up to city water with a check valve, The water is monitored and topped up with chemicals on a regular basis to prevent corrosion, inhibit bacteria etc. Also side note if LMG actually sees this comment, that is indeed a condensate overflow switch Linus was pointing at in the beginning. Those drain pans are pretty rusty, and may be leaking- which could be a reason these coolers were scrapped. If these are ever used for their intended purpose the pans can be easily repaired by pouring in a kit called PanSeal which self levels, coats and seals the pans. Edit, Im watching this video and cringing again. Between Linus' house and this, you guys are helpless when it comes to plumbing / electrical. Get Jake some plumbing classes, or Hire someone with some Trades knowledge to help with things like this, you spent WAAY to much money on fittings silicone etc. This is such a simple project that could have been done in a few hours. (Just constructive criticism not trying to be rude)

[@Ikxi]

They are probably also trying to do it the "fun way". Like LTT always has a level of jank (highest when Alex and Linus donsome watercooling project or the likes). Though yea, getting some professional knowledge would be good, just so that mistakes and potential catastrophic mistakes don't happen. Unscheduled, uncontrolled, rapid disassembly is not fun.

[@moderndiscourse]

Agreed. As an electrician, it’s painful to watch some of the things these guys do with wiring as well. It seems like they’ve been fairly lucky in that department so far.. …but electricity is an opportunistic son of a b*tch, and one of these days it’s gonna reach and grab someone. I just hope it doesn’t end up being serious.

[@johnthefactfddict3281]

@@moderndiscourse yeah these guys do electrical jank to a new level what they should be doing when they play with 240v is simply to buy the equivalent of nema l5-30 connectors for 240v devices, those are intended to have 240v at up to 30A rated(though I am sure the surge of the connector can take the full 50A you might see on american style electric ranges) the jank extension lead that is fed by the shop machine plug is really stupid, because there are many devices that can't take 240v, and the universal ones that do are no justification for non-standard plugs 240v is fucking SCARY, the whole reason I don't scream at EU type plugs is that they do actually design a way to prevent ANY contact with live circuits to ground, through you I have heard many a horror story with just a worn 240v lead in the USA, but I have heard many a tale of 120v not killing a healthy person, even with hand-to-hand shocks(including me) I do not advocate even touching live >30v circuits with bare hands(at least use a rubberized glove on your non-dominant hand for insulation) but if you are gonna do jank, don't fucking dare with 240v+, especially when dealing with water-cooling too(the additives in water-cooling can increase shock risk if it leaks)

[@noodlelynoodle.]

​@@johnthefactfddict3281 I miss the 480 volt saw we had at my highschool so much lol makes all the 120 volt ones look so weak

[@johnthefactfddict3281]

@@noodlelynoodle. dam 480v is spicy, bet that saw could cut an entire ancient californian monster without struggle

[@panagiotispappas1001]

Ok Linus give it to me then

[@frndrmn]

nah, i'd win

[@YouTubetail]

😮 I’m buy it Linustech bro 👍🏼 PC

[@Randomtheprotogen]

​@@frndrmn Ultrakill pfp spotted

[@H786...]

linus shouldve given it to my man Panagiotis here, he obviously needs it more than him.

[@emily66838]

@@Randomtheprotogenlet's date

[@the_original_dude]

4:51 I absolutely adore the fact that you have to state the obvious to avoid all the dumb comments

[@Hamster1022]

y isdn't inserted all the way it going to leak!

[@michaellynch1132]

I have built a small lab for work, and a 3Ton AC is nothing for a series of computers. We had a 7.5T unit and it was less than we needed for a couple of racks and this was 20 years ago.

[@zuzm0]

Advice for testing leakage for next project involving plumbing: When you think you are done with the plumbing use an air compressor to fill it with air and spray slightly soapy water on the fittings. If it would leak it will bubble up. This way you can fix leakage without needing to deal with water. Then you can fill the system with water.

[@simpson6700]

they should know this. they have done the same thing for PC water cooling with a little hand pump.

[@gwaldar7300]

Dealing with water is better content

[@XA--pb9ni]

They 100 % know that but don´t care

[@JGnLAU8OAWF6]

Got to be careful not to pressurize it too much, there is a lot of energy in compressed air.

[@zuzm0]

@@JGnLAU8OAWF6 right.

[@DavidBezemer]

One major issue you'll still have is that the two hoses are not well insulated from each other, in a DC setup you'd run the inlet water on the cold isle and outlet on the hot isle side, because now you're reducing the outlet water temperature and increasing the inlet temperature by running the hoses together. For DC modeling that's nearly a 40% efficiency delta.

[@legominimovieproductions]

Here in germany we have premade piping where you have a large outer "pipe" containing two water pipes with insulating material in between, its made for heat pumps, maybe they can pull out the duct tubing and put something like the heat pump tubing in, would fit the use case perfectly

[@user-fw6eg3hc8f]

@@legominimovieproductions Yep, probably the same time used for an outside wood furnace for your house.

[@projectdynasty7536]

2:42 Deaths caused by tilting or attempting to tip over vending machines, including snack and soda machines, are rare but do occur. On average, vending machine accidents result in 2 to 4 deaths per year in the United States. These incidents often happen when individuals rock or tip machines in an attempt to retrieve stuck items, and the machines fall over, causing fatal injuries.

[@projectdynasty7536]

That’s about the same number as shark deaths per year. That’s how dangerous that was for you Linus

[@Greedy-Allay]

It is kind of epic realising I am still using a sata ssd when this stuff exists

[@quilixcraft]

Lol

[@QualityGaming4Kyoumohrisvrysty]

Lmao

[@unknown7.8Bviews1hourago]

Why are you using a sata ssd

[@illegaalen]

Bro I am using an hdd

[@milifileoto6742]

@@unknown7.8Bviews1hourago whats the problem with it, if it aint broke dont fix it

[@Windeycastle]

I saw this system working on a datacenter-level at the datacenter of my university, and I can say that this is certfied janky. But it works like the real datacenter! 3 degrees difference, and 24 degrees in the server-room. I'm amazed at the similarities!

[@user-fw6eg3hc8f]

Physics is physics everywhere

[@HellbaneAD]

I haven't watched an LTT vid in ages due to it going a slightly different direction. HOWEVER this took me back to the early vids, so entertaining while also being interesting and thought provoking (for better or worse... lol)!

[@kings_pride]

be careful when sticking the rads directly to your racks. We've had a system like this from Rittal and it was worthless - turned out, you need a LOT of airflow and pressure to get them working, and ended up zip tying noctuas to the rads to make them work at all...

[@desert123100]

@@BichaelStevens fan make air less hot more quick

[@CheapSushi]

@@BichaelStevens They want to take the giant radiators from inside the giant black rectangles you saw in the video and just put the radiator on their orange rack door where the servers are exhausting. They basically want to eliminate a step. The problem as the other poster said is that the air venting out of the servers doesn't have enough pressure to force the air through the radiator on the door to even do anything. The air will just gently hit one side of the radiator and that's it. You need air to go through the radiator fins to make it work. So you end up putting fans on the radiator to force the air. But then you've basically just recreated the point of the giant black rectangle boxes that originally had the radiator but now it's all just way more janky.

[@Im1Thing2Do]

@@BichaelStevens I suppose he means that the heat exchange system only works if you have enough airflow caused by either fans on the radiators themselves or a ton of servers literally pushing air into the "hot aisle", creating an area of high pressure on the hot side of the rad and an area of low pressure on the cold side of the rad. The way his comment is worded i suppose he is of the opinion that Linus' system will not work due to lacking fulfillment of the aforementioned criteria

[@kyleclark6997]

Sounds very LTT to do that

[@kings_pride]

@@BichaelStevens the radiators were integrated in the back doors for 19" racks. they were designed to work passively with the airflow from your servers. so, hot air from server towards back and through the radiator, cools down and leaves the rack as just cool air. the problem here was, that you'd need servers mounted really close to the door, and have a lot of air, with pressure, coming out of them. in our case (pretty Standard Dell Servers and also some Netapp Storages) did not produce enough airflow to make it through the radiator door, they even shut off because they couldnt get rid of the heat anymore. better?

[@fonsito1956]

16:19 "You can fix everything with a hammer" "You can use anything as hammer"

[@bigfil1981]

So "you can fix everything with anything" ?!

[@lordwafflesthegreat]

First rule of designing construction equipment: Overbuild it because it WILL be used as a hammer!

[@FastSloth87]

@@bigfil1981Technically correct, the best kind of correct!

[@CASyHD.]

@@bigfil1981 fuck i wanted to answer that :D Many great minds think alike

[@explycitkilla]

"Any machine is a smoke machine if you operate it wrong enough."

[@miscbits6399]

I went through all this just before retiring. Smart valving and dumping waste heat will work for a good chunk of the year but you'll still need a water chiller for a few months a year to be able to transfer heat when it goes over ~25C ambient. That said, you'll achieve much better sensible cooling efficiency with a chiller than with CRAC units due to the chiller's higher output temperatures (in this case the chiller is interposed between the server room and the external radiators) I did propose that we use the waste heat to warm up the facility swimming pool in winter but that was kyboshed because someone would have to pay for 200 metres of waterline to get to it and nobody would stump up (it would have made the radiator/chiller load a LOT less in summer when the pool can act as a daytime heat soak and night time radiator, with power savings paying for itself pretty quickly) My server room went from being thermally limited to 18KW of cooling to being certified for up to 80kW (with failover) at roughly half the power consumption of the old CRAC setups at full song - most of the time the only load is pumps and fans.... Doing it right is vastrly cheaper than doing it over. It was a £250k job to fit the appropriate power and cooling systems (which I had asked for in the first place) rather than having pointy haired managers discard my requirements as excessive - resulting in the "new server room" being unable to accomodate all the existing kit scattered around the estate as we couldn't cool it sufficiently followed by 10 years of stand-up screaming matches and regulators demanding we clear out kit from the "old server rooms(*), which needed to be repurposed as ITAR secure storage" It's insanely difficult to run a 24*7*365 operation with some contracts subject to downtime service penalties(**) when you're changing the cooling and all the power feeds at the same time (*)those rooms - usually converted closets - ended up being stuffed full of other kit as soon as our backs were turned after we removed the critical stuff, which made the problem even worse. Never allow "temporary" accomodation when closing down an old server room and make sure you disable the cooling, or SOMEONE will manage to sneak stuff in there and make it your problem again (**) When you explicitly say there is no way to guarantee continual service and people sell it to governmental entities with those guarantees, guess whose head that lands on? If you said the IT staff you'd understand why we go grey prematurely.

[@FlyingCIRCU175]

I realize that Floatplane peeps know this earlier but okay, now I realize that recent tower chiller video was foreshadowing. Also, it feels like LTT is in this weird zone where they're not quite super-vital data center but also very far from the homelab niche that Jeff Geerling and NetworkChuck occupy. It makes their server adventures so maniacally fun to watch, especially as a former sysadmin.

[@MrTVintro]

Linus once described LTT as the "Top Gear of tech".

[@3isr3g3n]

Absolutely. The Server vids are even better if Wendell is there.

[@PoodleAndMonkey]

what do they use these big servers for? it can't all be videos and forum posts

[@HolmeBrian]

@@PoodleAndMonkey research and videos

[@reeddeer793]

@@PoodleAndMonkeythey film the raw footage in 8k I believe, and they store all of it

[@jpolish420]

Hold your fitting in your left hand, hold the tail of the teflon tape with your left thumb, roll the tape off the roll backwards so you can tension the tape and roll it off the roll, three wraps around the threads. If you absolutely don't want it to leak, throw some "Gimme the Green Stuff" pipe thread sealant on top of that and you'll never have to worry about leaks.

[@JonEhh1337]

Been in the data center field for 10+ years. It always amuses me when LTT tries to bridge the gap between building your own PC to servers and DC equipment.

[@jesp7657]

i work in a big plastic extrusion company and we have pipes under our outdoor storage about 20.000m2 and in the winter time we can remove about 500kw of heat from our production and the cost is really low because it only runs with one pump and nothing else. even with an outside temp of about 15 degrees wwe get a return temperatur less then 20

[@ozumado]

I work in injection molding company and we use hot water from injection machines to warm the warehouses in the winter, its pretty sick how you can utilize the resources that otherwise would be just wasted.

[@DMSparky]

God I hope there is redundancy in the pumps hahah

[@stevebowen9412]

Ditch the AC altogether and put a water to water chiller between the two heat echangers and you'll close to double the heat pumping energy efficiency. Then you can put a heat exchanger on the roof for the summer time(especially as they say we could have an even worse heat dome this year) and just use a 3way valve to direct the hot side water outside the warehouse during summer.

[@Felix-st2ue]

Or if you want to continue with the repurposing, get an air to water heatpump to replace the warehouse unit. And fot the Winter you could also put one on the outside.

[@stevebowen9412]

If you did that you'd be much more constrained with where the heat goes. Much easier to switch a water loop.

[@Felix-st2ue]

@@stevebowen9412 There is no need to not Stick to a Waterloop. You just need to use a Monoblock unit. Those have the whole refrigerant circle in one casing.

[@stevebowen9412]

@@Felix-st2ue by definition if you're using an air water heat pump the the hot loop will be air . Unless you put the air side in the server room.

[@Felix-st2ue]

@@stevebowen9412 Technically yes. But most modern units offer a cooling Mode for the summer. So they will reverse cycle to cool the water.

[@andygozzo72]

i used to work for a sever cooler cabinet company, their system didnt used chilled water but normal temperature, they cooled the warm water back down after,

[@G3ML1NGZ]

In the hangar where I worked we used an oversized muffler to kill exhaust noise from the Electrical systems air exhaust in the aircraft. It worked great without impeding flow. Basically your normal exhaust diameter with a bunch of holes in it and a larger diameter tube around it with some light insulating material. little to no restriction of flow but plenty of opportunities for sound waves to bounce around and die out.

[@ChristopherHallett]

Truck mufflers. They're cheap as dirt and made to last.

[@absalomdraconis]

​@@ChristopherHallett: I think the home-brew option is going to work better for LTT, considering the sheer size of what they're silencing. They'd need _a lot_ of truck mufflers for that.

[@reclusebruh]

Sweaty linus oilup when?

[@Dynamicdrifting]

💀

[@frndrmn]

fr

[@nathaniel.higgerson]

You can do the Linus shaker huh? The tech shaker, give me the tech tips dude, share your tips.

[@ChaseSchleich]

Sweaty Linus pin up calendar when?

[@Greedy-Allay]

No...

[@Littlestrawberryfox]

Im sure someone mentioned it but 2 words that you should take to heart is "Pipe Dope" I switched to it 22 years ago and I have never used Teflon tape again on ANY fitting from a shower head to Radiant heating and hundreds upon hundreds of fittings and i never have had a leak from first tighten of every fitting, The only thing you MUST always remember is to make sure you leave the end 1.1mm of the start of the fitting so no Pipe Dope gets into the line as it will plug filters, however Teflon tape does the exactly the same thing when it comes apart as I have seen you put it to far over the end of the fitting, I have also seen you wrapping it backwards it wraps with the twist of the fitting to tighten it, However a bottle of Pipe Dope lasts so much longer then a crappy roll of Teflon tape, and works much better. As i'm sure you also noticed make sure when using Pex always remove the white inner collar ont he shark bites as they are just for very flexible tubing such as the clear tubing or something like a garden hose (please don't connect a garden hose to pex lines or Shark Bites except for an end run off drain that has no actual pressure as it will still most likely either pop the fitting out or cause the teeth of the shark bite to cut into the pipe, also to remove pipe from shark bites use an adjustable wrench that you set to the size of the pex pipe. Also in one of the home cooling videos you stated that the gray pex pines allowed air transfer, you got that backwards the gray sheath over the inner black line prevents that, the pex you used in this video actually can if its the older or non thermal pipes allow this effect to happen, the gray and black pex does not and supports radiant heating pressure and temps n problem where the red pex does not. Also the red and blue are designed for color coding your lines aka hot and cold not a type of pipe.) Also while I do love soldering shark bites even on permanent installs are fantastic as you can later if needed alter it so quickly. I was also happy to see you using Shark Bite ball valves but to be able to properly isolate lines you need 2 one for either side of the line with 3 inches of Pex in between which is enough to get your Shake Bite separator or adjustable wrench (Which is way harder to lose then the stupid orange crescent moon shaped separators for the shark bites you can buy, so just use your adjustable wrench and doing plumbing work means you should always have one with you which i saw you using) Also your auto fill solution is i will say inspired. Love it. As for the plastic container, sand it with an orbital sander to make its wall thickness match.

[@simplyintricate4160]

That Milwaukee impact @16:22 very much IS a hammer. We've got ongoing jokes at work about how if it says Milwaukee, it's a hammer. It might also be something else, but it's a hammer. Which is extra fun because my PC case has a Milwaukee logo glazed onto the side of it.

[@orijimi]

Milwaukee battery packs are actually especially susceptible to breaking because of how little meat the screws hold onto on the top side of the battery.

[@abcyclops]

@simplyintricate4160 You mean your hammer has a Milwaukee logo glazed onto the side of it...

[@simplyintricate4160]

@@abcyclops Or my hammer has a PC inside it, up to you how you want to look at it.

[@defeqel6537]

always a great idea to mechanically stress lithium batteries...

[@DarkTangoFox]

These construction videos with Jake, Jake/Linus are my favorite things ever. All the server room vlogs and construction stuff. Love it!

[@xGaLoSx]

Ya, it is their best content by a mile. Jake and servers is heaven to me.

[@MrKanibaal]

21:20 (When you're company grows so big, you have to give up responsibilities) Linus. Well done on creating this empire. Would love to see you write a book about your success and drive in life. Ltt team, thanks for the hard work and quality you bring to the empire.

[@vegard2000]

I used my mining rigs for heating during the winter while living in the arctic. Worked great.

[@jgames01]

Linus/Jake videos are always, always, always my favorite. Just the banter and little tiny snippets of something out of context, the editing. It's a perfect story, with lots of engineering.

[@AgegfleshBrassa]

11:11 J: "I spent some of your money and bought the wrong thing so we have to do it again" L : "If I had a dollar for every time he said that we'd be able to afford all these mistakes" That means every mistake cost a dollar, not too bad!

[@tobiasfunke8990]

"It will be done right later." Yeah... Right... Nothing is as permanent as a temporary solution...

[@0-B1]

Man truth went past my old school the temporary school buildings ( basically double wide shipping containers) turned classroom still going strong 20 years later

[@chosen1one930]

I thought they were going to stop doing things like this. I don't it will even heat a space that big with a tall ceiling since heat goes up.

[@SoulTouchMusic93]

temporary solution THAT WORKS!!! big miss!

[@TheSkcube]

​@@chosen1one930it is temporary as in they are doing it themselves for the video. A licenced plumber will later come and do it properly. The indoors and the we will pull out the raadiatior is a certified soonTM moment though.

[@T1bbY90]

You should throw a small 5-10kw geothermal heat pump in that system. The brine side run down to the server room and the heating side up to heat the warehouse. So you can move way more energy without using multiple cooling towers.

[@darrenneave]

Nerd tip of the day: Mesh filter sizes work inversely. It refers to the holes per square inch. A 100 has 5 times as many holes as a 20. I would suggest switching the 100 for a 20, before the loop clogs up.

[@TDAVIS1992]

@@darrenneave 5 times larger* Not necessarily 5 times more.

[@F7INN]

The valves to choose where to send the heat is a really cool idea. Good thing you've got 6 of the cooling towers!

[@deejayxcrypt]

The problem with all these massive powerhouse servers always seems to be that - example in the company I work in - the bottleneck is always the hard encrypted VPN connection for all the remote workers.

[@TheFPSPower]

If you're working with a lot of data your VPN will be to access the computer that is sitting locally, not to transfer terabytes of video to edit directly from the laptop.

[@deejayxcrypt]

@@TheFPSPower Sorry. I did not quite understand how that helps the case I mentioned. Users are all working remotely. Edit: Unless of course you meant that we'd have a “kind of” VMs that users would use instead (high-end machines placed locally where the data is at and have cheaper machines that the users would carry along). That works in some rare cases yes but there is a requirement to have high end machines for the users themselves to use in their remote locations.

[@talonsid]

@@deejayxcryptI assume you are talking about a remote datacenter? Most local data centers for editing are using compressed proxies for anyone needing to connect remotely. It seemed like thats what they were using these servers for anyways.

[@deejayxcrypt]

@@talonsid I am talking about either data centers (or perhaps some high-end NAS drives) with tens of terabytes of data. The data are physically in some on-premise locations the data owners themselves have and, because any singular user usually requires some 500 GB amounts of new data at some day of the week (perhaps just one singular work project), the bandwidth costs of using actual cloud servers (like Azure or Amazon AWS) makes them not an optional choice. The few potential users actually working in these on-premises locations of course have excellent work conditions. But then there’s also the many fellas working remotely and using a highly encrypted VPN to access the data. Even if the actual on-premises data locations have 1Gigabyte/1Gigabyte bandwidth access, the VPN might even reduce it to 10MB.

[@deejayxcrypt]

@@talonsid I don’t know if my KZbin app is bugging out or what so I’ll shortly repost what I said in length earlier (maybe this will be me repeating myself but anyways…). In our case we have data centers (or high-end NAS drives) in some few locations. Those locations are capable to have 1Gigabyte/1Gigabyte bandwidth access from outside via encrypted access routes. We are able to have decent access routes between the data locations for any sync/backup reasons or just between the few users working from those locations. Then we have the many remote workers that rely on VPN access that is usually something like 10MB.

[@zimtio]

3:09 Actually the Servers pull cold air from inside and the hot air gets transported outside. So the other way around, even makes more sense. Because the servers need lees force and power to get cold air. Its easier to cool a small amount of air, than a large amount of air.

[@lukassawyer2076]

Love the content! Please make sure y'all have some way to monitor humidity and pressure inside that server room. Temperature isn't the only thing to be concerned about. Improper humidity control can cause just as much damage as improper temps. Love everything you guys do keep up the great work!

[@ManuFortis]

Actually Jake and Linus, instead of dumping the heat outside when you don't want it, which would be ideal under most circumstances for most folk, you should instead dump the heat into your hot water boiler(s), and possibly even a huge insulated thermal sink to act as a battery of sorts. When you need more heat, you can pull from it, and when you don't need heat for anything, you dump into it. You could do the same thing with the geothermal cooling idea you have with the parking lot, but instead just make a new thermal sink that is insulated for cold temperatures instead of hot. In that ones case, you are constantly pulling its heat via a separate loop dumping any heat it has into once again the heat battery, while having the original loop pass through it to drop it's water temperatures below ambient. Between the two masses being used to modulate the temperatures accordingly, you should end up with an albeit more expensive system, but also more resilient against the swings in climate, room temps due to people being in the area, etc and so forth. The A/C units will barely need to be operated then, ideally; and if they turn on it will be in a worst case scenario where you really want them on. Attach this to some in-floor heating/cooling loops, and perhaps some thermoelectrics where is reasonable, and you could basically turn the entire building into one giant heat pump, with ability to throw the peltier's into reverse for the Seebeck effect. It won't be a lot of power generated, but it might be enough to keep the lights on at least via a backup power system charged by that power generation. In an emergency, this could prove handy, having what would basically be off-grid emergency supply of power if the grid suffers a black out. It won't be much power, but if it keeps the lights on, and some cellular phones active, it's good enough, right?

[@rkan2]

​@SanityTV_Last_Sane_Man_AliveWith units that big, I am pretty sure they wil have a separate heating bill in the winter. Why else would they talk about geothermal?

[@thomasr7129]

@SanityTV_Last_Sane_Man_Alive - heating water require a lot of energy, A loop pre-heating before the water boilers is "free cooling" AND lower electricity bill.

[@TheSkcube]

This is an office though, only showers would have hot water.

[@DarkWolfsDen]

Sand would make a good battery.

[@ZabivakaPirate69]

​@@TheSkcube What about sink faucets? I believe they have a kitchen(s) too.

[@DingleFlop]

Just wanna let y'all know that crimp fittings are just as reusable as normal ones! You can just cut the crimp ring or compression ring (depending on the style) off, and reuse the fitting again later. Lowers cost over Sharkbite, which are brand name and expensive! Also, if you want to impact the flow as little as possible (most fittings will restrict flow), you can look at.... I believe Pex A? Uponor makes these really cool stretch rings with a special tool that keeps a consistent ID on the pipe. In this situation, I'd recommend the plastic fittings over metal ones in this case, they're cheaper still! The cost is upfront in the tools.

[@BgStalker]

I am not sure do you have SwageLok fittings overthere or they are only EU Brand, but i am realy impressed with them when we are using them in my place of work.Have to point out that the max operational pressure we have is 5-7 bars, but still impressive quality of the joins.

[@rogerorchard2317]

One of the places I worked had a temporary supercomputer in its server room. The AC cut out, and the fire alarms went off before the alarm, which caused the AC to go off.

[@DavidSiebert]

I would have suggested that you use anti-freeze, and you should also consider using a vacuum for fill it. The coolant will add some anti corrosion protection. And you do not need an rPi to control the valves, A pico or esp-32 will work just fine for that.

[@wyterabitt2149]

You mean a Raspberry Pi Pico?

[@pyroslev]

From a company of guys that install, repair and rip out this sort of coolers for a living: whoever sold you those 'should work' parts ain't someone I'd trust. However, we like the Jerryrig setup of this. It's just jank enough to be the proof of concept but logical enough to be a valid upgradable option.

[@RadioactiveLobster]

The several random people standing around and the camera man: "Should we tell Jake he has a white thing in his beard?" ... Everyone: "Nah. It's funnier this way."

[@CanIHasThisName]

He cut himself shaving that morning.

[@mikecumbo7531]

Jake has a beard? I have seen 12 yr old with better beards.

[@SomeUnremarkableGuy]

what is actually funny about that? I didn't even noticed it.

[@CarstenSvendsen]

14:36 This whole section was pure comedic gold. Reality, Editing, the whole thing :D

[@DMSparky]

Btw you might want to check I think rockwool isn’t designed to be used in open air because it spreads its fibres everywhere which your not supposed to breath.

[@keller_]

Really dope video, I love seeing Linus & Jake do serverroom upgrading, especially with potentially janky DIY involved, super hyped for pt 2! Reminded me of the early mythbusters energy when they were trying to figure out how to get a project done, love seeing that

[@DarrenPoulson]

I wanted to do this back in the early 2000's, when hot aisle was the big thing and APC were pushing it. Tho I was wanting to feed the excess heat into a water tank to give the whole building 'free' hot water. I thought it'd be a cracking publicity thing too. Alas, a golf course deal was made for a different idea. :/

[@Blitz_Ant]

I thought Jake quit, I haven't seen him in a video in years. So glad to see he's still here, definitely one of my favourite ltt eployees.

[@t0biascze644]

17:30 the way linus smiled before the scene cut off

[@purexd5188]

Cause you could miss the intended pun

[@WearyTimeTraveler]

Jake’s lost a bunch of weight, good job man! Let’s Gooooooo

[@CarsonUitermarkt]

Server room: _is 100 degrees_ Linus: *WATER COOLING*

[@joshuaslade6364]

Please restock your watterbottles, I'm trying to give you my money( edit, they restocked them! :)

[@AB-80X]

They are trying, but waiting for their supplier.

[@peterparker-zy9oe]

it's a lax write off

[@BlakeStone-zs3rc]

I'll sell you some ltt water bottles 😂

[@cris_crafter]

How about putting two of these cooling units horizontally on the ceiling of the server room? Would take advantage of convection and you could literally double your thermal throughput in the server room, without taking up any floor space.

[@PhattyOgre]

I didn't catch it if it was mentioned, but was there a particular reason that it was decided to put the heat exchanger at the highest possible point in the warehouse? If you're going for maximum possible heat exchange, you'd want to put it closer to ground level, no? However, I can totally get if the decision was made for sound reasons. Stuff gets loud.

[@Uldan1988]

17:25 Dad joke , on the SPOT xD

[@chromeeh]

In row cooling is very neat (cold / heat isles) :) Worked at a place where we used 6 double wide of these units

[@LesenundDenken]

If you shunt the coolant out below your parking area in the winter, you could create a permanently clear parking lot - no snow removal.

[@malibuclassic77]

You’re in Canada. Open a window.

[@Bubbins1111]

'You know what's not expensive?' lol i thought it would be 'the segue to our sponsor,'

[@surferdjnj]

Happed all the time to my customers. You reach a certain amount of BTUs and 3 TON doesn't do it anymore. Then they'd have to call the land lord to run a WATER line to their little server room so they could get 4 TONS of cooling + in that room.

[@Welvrt]

That’s a budget pc

[@YouTubetail]

😮 Linustech

[@Lil-watermelon-cat]

No Roblox game tips

[@another-anonymous-username]

Yeah, If your budget is $1,000,000.

[@seljd]

is UHU rare in North America?

[@CanIHasThisName]

Imported.

[@TheSkcube]

Like buying the LTT screw driver in Europe, importing is expensive. Same thing with PB Swiss, way more expensive in NA than in the EU.

[@RickDuarte-wh8dn]

Honey, I am involved with the Information Technology industry. Next thing you know: 4:57

[@Gamer-kn7fi]

"Mint!"

[@arrowrod]

In the olden day... Giant mainframes used raised floors. First air cooled then water cooled. The giant main frame company sent their installation and maintenance guys to install. Went fast, because everybody knew what they were doing and everybody continuously worked. Now, "small" computers are returning to giant size.

[@michaelbauers8800]

Raised floors still used in server rooms. I am no expert, I just work in one. But the floor allows for cool air, as well as cable runs in some situations.

[@fall1n1_yt]

I don't think company servers ever got small. Just LMG's servers _started_ small.

[@djtesseract3064]

On our systems we use fully immersive silicone oil baths for the server motherboards (i.e. usually Tyan AMD EPYC mobos) which is an inert non-conductive coolant. The coolant gets sent to heat exchangers / condensers mounted on external parts of our building. We even dip the 20 Terabyte hard drives in the coolant to keep the drives cool. I think we are at 400 ExaBytes for our Vancouver data centre now so that is getting up there in price! LTT might want to look at dialectric coolant in a fully immersive coolant bath scenario for all server mobos and drives.

[@JackRLong12]

You know what's not expensive? This segue to our sponsor! I definitely thought this was coming!

[@Wiisporter]

I'm down to take it off your hands, Linus

[@frndrmn]

im downer

[@MikeHarris1984]

To fix the tank, you can use a good flat oring, or use a bead of silicone around the hole on both sides, then slide the plastic ring in and tighten down and wait 24 hrs for it all to dry. Then I would do a bead of silicone around the sides as extra caution and then it should be good for ever. Once that silicone dries, it will be maluable and it will take a razor blade to cut it off the tank.

[@Paaaull]

Jake saying Mint like it is 2018 again

[@thesebluebeans]

get ready for 'day 1 of asking for the $1000000 pc you dont need anymore'

[@StephenSD-P25]

Where to begin? I guess first thing I'll say is if you guys were located in the US, because I'm an electrical and plumbing contractor by trade who also runs a datacenter in my basement for fun, I would have gladly donated my time to aid in this installation. Second Shark Bites will not leak (as long as the pipe is fully seated within the fitting) and PEX of any diameter, but especially the 1" dia. is a bitch to work with. And finally you could have still used that 1" Schedule 40 PVC pipe as they make 1 1/4" to 1" reducers. That was a very smart move placing shutoff valves to isolate key sections. For such a common sense move you'd be surprised how many people neglect such an important part then when they have a problem the whole system has to be shutdown and drained which leads to headaches later. Also the best tool to cut any type of PVC pipe is just a standard miter saw as it will leave you with a nice clean, straight cut.

[@JonnyHatSwag]

UHU MENTIONED 🔥🔥🔥🔥 GERMANS WHERE YOU AT????🗣🗣🗣

[@hellcat3981]

UHU ALLESKLEBER

[@internettipper0130]

It`s so funny, that you can get the same one for 7€ over here at ATU

[@CrazyPat3000]

Even better they're using wilo pumps 🎉😂

[@thedude8753]

And orange REHAU pipes😂 also GER

[@majortom4338]

Uhu is jut

[@viperjason777]

No, there should not be "evaporative loss" in your radiant floor heating system. That means you have a leak, albeit a small small leak but still a leak. Look for mineral buildup on the connections and that will be where the leak is. Usually on unions.

[@andrewphi4958]

As someone who did wasteless heat management for a server closet in a tight building apartment, I'm loving this )

[@yobev4904]

take a shot every time he says mint

[@matthew_mayton]

I still don’t understand how they haven’t seen those fittings before. There basically the FPT x FPT Union Fittings like you would see on a home natural gas line for a air heater or a water heater. Usually their made of cast iron. But you can get them in brass and copper. Ring any bells anyone?

[@NeuralFire]

Theyre just gamers man how wpuld they know that

[@stevebowen9412]

I assume you're talking about the original fittings they cut off? Those are sanitary flange fittings and they're just not used much in Canada.

[@matthew_mayton]

@@NeuralFire Because they spend a lot of time in mechanical rooms. You can see one on the pressure regulators. I would say there was one in his “New House Smart HVAC” video but everything was electric.

[@braeder]

I am a maintenance mechanic and a programmer and I am not impressed but I am impressed considering the circumstances! Nice work :)

[@Eli-zb2yj]

Next video: "I build a million dollar pc for minecraft"

[@killjoy059]

Can I have it?

[@project-hobby]

No

[@TechnologyRules]

1:30 I loved that flip, Linus. Awesome videos!

[@ThomasJoseph315]

Hey Guys,.. there is a thing called and "Air Scoop" that is in my boiler system and it's job is to remove air with a air bleeder in it. That pump you used is for boiler systems which gave me the idea. Good Luck! Also, when you put Teflon tape on,.. you twist it up and follow the threads then untwist and lay 3 layers flat ;)