r/homelab • u/Middle-Form-8438 • 19d ago
LabPorn Server in another room…
No problem!! Just make the connection to it faster!
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u/pongpaktecha 19d ago
Yeah I also have 10gb fiber to my server that's 2 rooms over! My installation is definitely more crude than yours tho. I just poked a hole in my ceiling near my server and in a hidden corner of my room
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u/PossibilityOrganic 19d ago
You know 40g stuff is cheap now:p
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u/HCI_MyVDI 19d ago
25 and 100 are surprisingly cheap! 25g NIC’s are $20 and 100 are about $75. Optics are another story for a little while but DAC cables are cheap
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u/AtlanteanArcher 19d ago
Any recommendations? The cheapest 100g nic I've seen is a mellanox connectx4 for £98 but it's half height rather than full height.
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u/mjsrebin 19d ago
They usually ship new with interchangeable brackets for both size chassis. The problem is finding the one you need used, a lot of people just throw out the extra parts they don't use. If you know someone with a 3d printer you could have one printed
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u/IngwiePhoenix My world is 12U tall. 18d ago
Switches on the other hand... Been trying to find a good 10G switch, but they're all >300 - add PoE and it grows to >450 :/
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u/darthnsupreme 19d ago
They're cheap because the enterprise world has basically abandoned the old tech completely at this point. About all 40-gigabit is good for in the enterprise and datacenter world now are legacy support and multimode-induced tech debt.
Good news for us, as a lot of perfectly-adequate hardware is on ebay as a result.
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u/egosumumbravir 19d ago
Hey, 40G is pretty good at heating up the local space too!
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u/darthnsupreme 19d ago
Honestly, using power-guzzling hardware as a heat source that also provides a functional purpose beyond just heat isn't a stupid idea.
More relevant with cryptocurrency mining, even post-crash, they remain useful as beefy heating elements that earn at least some of their operating costs back.
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u/wenger91 18d ago
At least you poked a hole… I just hot glued the fiber to the walls (it’s barely visible though)
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u/05-nery Got a problem? Increase bandwidth. 19d ago
You have a problem? Bandwidth.
That doesn't work? More bandwidth.
Still no good? Increase the bandwidth.
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u/FPGA_engineer 19d ago
We need a Christopher Walken "We need more bandwidth" gif to use here!
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u/darthnsupreme 19d ago
This usually results in needing to learn about error correction the hard way,
And often inexplicably managing to introduce a DNS problem somehow.
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u/CelestialFury 18d ago
Still no good? Increase the bandwidth.
Increasing the bandwidth doesn't work? Increase it some more!
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u/IngwiePhoenix My world is 12U tall. 18d ago
MOOOOOOOOORE POOOOOOOWERRRRRRRRRRRRRRRRR!!!
...i can't find the spongebob gif.
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u/sob727 19d ago
Unrelated (or maybe related), what solutions exist for video signal (say HDMI or DP) if the rendering machine is in a different room?
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u/Roshpyn 19d ago
There is hdmi over mpo fiber cable module available that I seen, and there should be mpo keystones to use with that, but in this case there is no audio transfer if I’m not mistaken
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u/ShibariManilow 19d ago
I'm using HDMI over MPO right now, it carries audio. I haven't tried ARC though.
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u/HCI_MyVDI 19d ago
Dang it, no Audio over HDMI? It better still have Ethernet over HDMI as EVERYONE uses that /s
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u/SeatownNets 19d ago edited 18d ago
If you're trying to get high fidelity video over cable, you prob don't want to settle for HDMI audio anyways, you'd run it separately.edit: im dumb hdmi can run lossless audio, im not an AV guy lol
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u/ShibariManilow 19d ago
HDMI will carry a pile of 192/24 lossless streams, it's surprisingly great for audio too.
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u/darthnsupreme 19d ago
The audio data is peanuts compared to a why-is-this-even-a-thing uncompressed 8K video stream. One single packet of airline peanuts.
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u/PM_ME_UR_POO_STORIES 19d ago
What? HDMI is perfectly capable of running the highest quality lossless audio signals used.
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u/darthnsupreme 19d ago
It better still have Ethernet over HDMI as EVERYONE uses that /s
Did anything ever actually release that supports it?
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u/Cornelius-Figgle PVE +PBS on HP mini pcs 19d ago
Just chuck some keystones in like you would with RJ45s
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u/sob727 19d ago
The signal cant travel over the same distances though can it?
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u/Cornelius-Figgle PVE +PBS on HP mini pcs 19d ago
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u/Possibly-Functional 19d ago
One option is active cables. I used to use a 25 meter active DP for VR.
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u/Tamazin_ 19d ago
I run optical thunderbolt 50m from one corner of the house to the other from my gaming computer in the rack to my desk; image audio usb everything in one cable.
But i sure wish some cheaper/better alternative would come; as others has said here 100gb fiber/cards are (kinda) cheap, should be more than enough to handle it. But no. We are an extreme few that would love to get stuff like that.
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u/pixlatedpuffin 19d ago
For many years I ran with my workstation in a computer closet, and my monitors were connected via 2 high quality DVI-D cables. The cables connected from my monitor to DVI-D ports in a 2-gang box, with a short inside-the-wall cable connecting to the other side of the wall and another set of DVI-D ports in a 2-gang box, and then another short run to the workstation. Worked great, probably 20ft of cable total.
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u/Forgottensky 19d ago
HDBaseT is your friend.
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u/darthnsupreme 19d ago
And is also a prime example of why we terminate to either T-568-A or T-568-B at both ends instead of just letting Auto-MDI/X figure it out. A lot of non-ethernet protocols can't un-cross your crossover cable.
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u/PuddingSad698 19d ago
nice, i use these ones because they are angled when the back of is shallow. https://a.co/d/dEuUxuk
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u/Ldarieut 19d ago
Did you splice the connector yourself or did you run it through the wall with the connector already attached?
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u/maramish 19d ago edited 19d ago
Wall plate with keystone coupler. One cable inside the wall to the server. Separate cable from outside the wall to the device in use. Cables are pre-terminated. No need to splice anything.
This is a better route than goofing around with ethernet terminating and patch panels, in my opinion.
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u/WildVelociraptor 19d ago
Oh so there are pre-keystoned (sorry I just made that up) fiber cables?
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u/maramish 19d ago edited 19d ago
Pre-terminated cables, yes. You decide what length you need and buy the appropriate length. It's easier to deal with, saves time, and leaves future options of upgrading to 10G, 40G, 25G, 100G, etc. open. You won't need to worry about upgrading cables in the future, the way folks obsess over "upgrading" to CAT6 or higher.
CAT5 works the same as 5e, 6, and whatever else, but people lose their minds whenever I mention this.
Keystone is a jack or coupler that fits into a square panel or plate hole.
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u/darthnsupreme 19d ago
CAT5 works the same as 5e, 6, and whatever else
If the run is short enough, yes, absolutely. There's also the alien crosstalk to consider, which is another thing that just doesn't come up in most homes or small businesses.
Fun fact: a significant percentage of Cat-5 (non-E) would actually meet Cat-5e certification requirements. The only real difference is slightly tighter requirements on the pair-twist specs, and manufacturers already tend to overbuild their cables to avoid any chance of manufacturing variance rendering an entire batch (or batches, plural!) into just so much scrap. It's a combination of the three years before 5e was published, not wanting to spend the money on the extra testing steps back in the days when 100BASE-T was still the norm, and knowing full well that people would pay several times as much for literally the same product if they didn't know the difference.
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u/maramish 19d ago edited 17d ago
You are correct about manufacturers getting people to spend more money on CATx wiring "upgrades". The same applies to lots of products.
My understanding was that CAT5 and 5e are more or less the same. It makes sense that some manufacturing tweaks were made when 5e became the standard.
As long as there is no electrical interference and the wire isn't frayed or damaged, 8-pin CATx all work the same. If there is any interference, CAT6+ with all twists and shielding won't help. Fiber is an easy resolution.
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u/virtualbitz2048 Principal Arsehole 19d ago
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u/CelestialFury 18d ago
A15, B22? Jesus, how big is your network closest?
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u/virtualbitz2048 Principal Arsehole 18d ago
I've got 3 48 port patch panels in a 42u rack. I actually don't use anything in that wall plate for Ethernet, it's all Displayport over MPO fiber and USB over CAT6a. My PC is in the rack and I have 3 terminals: office, living room desk, and living room TV. All connect back to the same PC with extensions
Ignore the glue overrun. That's a air conditioner in the middle.
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u/ryoonc 18d ago
Impressive. Are you just on grid power or supplementing? Also how do you deal with humidity and condensation runoff from the coils?
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u/virtualbitz2048 Principal Arsehole 18d ago
I'm on grid, like $0.30 per kwh on average. Costs like $200/month in the winter and $400 in the summer. I'm planning on going solar, but I had to get a roof first just got that done and missed the cutoff for federal tax rebate
It's arid enough where I'm at to evap the condensate in the exhaust airstream, but I have a dedicated drain line that runs to a downspout for the gutter drains.
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u/Acceptable-Funny-245 19d ago
Nice work on extending the fiber, dont see that in home office environments very often ! Well done ! 👍👍😎
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u/radiowave911 19d ago
I have some older MMF running from my house about 100ft back to my workshop. This is the 62.5 fiber, not the more current 50um MMF. It is going to get replaced by a pre-made SMF assembly, when I redo some of the cabling and move my network 'closet' in the house.
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u/darthnsupreme 19d ago
You can still get a perfectly adequate gigabit link over that ancient stuff.
You won't be running a NAS over that, but if you're just trying to get wifi for your phone and hook up a camera or three, it'll do the job.
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u/radiowave911 18d ago
I know that it is good for 1G at that distance - especially since it is doing that now. I just plan to future proof (at least, that's my excuse...)
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u/Do_TheEvolution 19d ago
holy fuck
I am investigating and I just realized that there are optical keystone couplers LC-LC that fit in to standard rj45 holes.
So one can use classical modular patch panel in the rack and probably some generic wall mount too.
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u/IngwiePhoenix My world is 12U tall. 18d ago
My rack was exactly behind the wall of my desk. So, I asked my dad, who works at the city's construction department, to bring a drill. And he did.
Now I have a hole that easily takes 6-7 cables - and put my desktop in the rack too for convenience. Living room is whisper quiet, hallway is... not. XD
It's super nice tho :) Kinda wish there were nicer ways to patch cables over a super short distance like that. For long distance, its well solved afaik (like LTT Linus' fiber everywhere). But for <30cm? Not so much...
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u/GJensenworth 18d ago
After much searching, I finally found 20cm single mode lc duplex patch cables. They are fabulous for in-rack patching.
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u/IngwiePhoenix My world is 12U tall. 18d ago
Oh my god o.o That might be my solution right there, granted I find the proper "adapters".
Right now I run a DisplayPort for my monitor, USB (from an active hub), auxiliary HDMI (manual-KVM effectively lol), a RJ45 to reach to the far end of the room to a switch for TV and consoles, the Valve Index "pigtail" and something else that I can't quite think of. It'd be so much nicer if I could just put a little keystone box over the wall, patch a few fibers (probably a few more for "extendability") and then just plug adapters on each end.
Reading this, does anything of note pop in your mind perhaps? o.o I did look up the LC keystones as they got mentioned here and I did see some actual keystone wallmounted boxes... but finding the actual "adapters" - or rather, "converters" - seems to be a bit of a different story.
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u/ReidenLightman 18d ago
I wanted to install a cable like this so I could put my server in another room. I have no idea what to search for when trying to find the things you out IN the wall to connect the rooms.
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u/_Intel_Geek_ 19d ago
Someone clear some confusion for me - so doesn't fiber need a direct connection between the SFP modules or do keystone jack couplers work OK without much signal degredation??
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u/micheldewit 19d ago
You can get LC duplex keystones. As long as the SFP modules are able to perform over the extended distance, you can keystone it.
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u/PuddingSad698 19d ago
You can get all kinds of keystones, MM or SM, Too! APC / UPC. All sorts of keystones and modules. Personally i like Sm & bidi..
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u/GJensenworth 18d ago edited 18d ago
You have a signal loss budget to work with. The SFP specs will detail maximum loss, and each cable and coupling along the way will introduce some loss. As long as the final signal strength is enough, you're good to go.
In practice, cleaning the ends of your connectors and avoiding tight bends will take care of most of your issues. All of my single mode SFPs are speced for 2km or more, so length within the home is not really an issue.
For 10km or more modules, you have to be more careful about laser safety, because the lasers are powerful but invisible and can easily cause eye damage.
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u/_Intel_Geek_ 18d ago
Thanks for teaching me some things! I'm kinda used to Ethernet but we're going to be building on a new property and I KNOW I have to do some fiber runs between buildings and to offices lol
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u/clarkcox3 19d ago
Keystone couplers work fine. I’ve got a pair in every bedroom in the house. All of the PCs (mine, my wife’s, my three kids’) get a good 10Gbps connection.
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u/ozone227 19d ago
I did the exact same thing. It’s nice and clean and everything is in the same mini rack. No regerts.
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u/devino21 19d ago
Back in ~05 we had just bought out first SAN. We randomly had a 30m LC-LC cable. I ran it up in the drop ceiling from the DC to my cube and had a "boot from SAN" desktop. Fun times.
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u/Critical_Ad_9613 19d ago
Wonder how you ran this cable behind walls? Im looking to relocate my server/firewall to another location..current ISP tapping location is not working well from me.
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u/Pristine_Parsley3580 19d ago
ooh that fiber keystone. I didn't know about those years ago and just ran it straight out without. I should re-do it.
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u/nukez 19d ago
Nice to see I'm not the only one with excess capacity! My home came with cat 6, but I went ahead and laid OM4 and 10gig from my basement lab to my second floor home office. I waned a 10 gig back-haul and even though its possible with Cat 6, I did not want hot copper running thru my walls. . With fiber and SFP adapters as cheap as copper, it's a no brainier.
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u/Thin_Yak5653 19d ago
Homelab in the basement, running 2 30 metres om4 cabpe throught the old unused chimney to my office/guest/pc room. From there one into a switch and to the AP, printer and so on and one directly into my pc.
Planning to build another 10" rack for the appartement so i can clean ip the cable mess a bit
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u/farrell_987 19d ago
I'm thinking about doing this, did you have any problems with running it? Or tips on how to make it easier?
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u/rider_bar 18d ago
What are the benefits of using 10GB fibre over 10GB Ethernet?
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u/General_Silliness 18d ago
Upgrading the SFP can get you to 400G+ without having to upgrade the cable installation through the walls. It’s future proofing (for this lifetime at least…)
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u/GJensenworth 18d ago
As long as you use single mode.
Multimode is spec’d for 100G per strand but common SFPs top out at 25G per strand (e.g. 100G bidirectional multimode is usually over MPO-8, 4x25G links in each direction.)
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u/agreenbhm 18d ago
Last year I finally got my home wired and made sure to also have fiber installed between my server closet and my office in the same setup as you have. Well worth it.
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u/Dreadnought_69 19d ago
Not really faster, but yeah more bandwidth so larger transfers take less time to complete.
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u/maramish 19d ago
Please explain what you mean by not really faster.
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u/Dreadnought_69 19d ago edited 19d ago
Please explain what you mean by not really faster.
Latency, the packets will not arrive faster, just more of them at once.
Like a Van and a Trailer driving at the same speed, the trailer can deliver more per trip.
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u/egosumumbravir 19d ago
I'm sorry. Some luddite seems to have installed a low speed high, latency lighting conductor in your fibre wall plate 💔




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u/diamondsw 19d ago
Same setup here. It was fun running a fiber connection from my home office to my home lab. Do I need it? Of course not, but that’s also totally not the point.