Huh? What is the mains cable mess for then?
Comment on This is the back of my 10" Mini server rack -- Custom made 3D printed power modules for each server
Legion739@piefed.zip 4 weeks agoMy setup is as resilient as this would be: image
I haven’t added any failure-modes
Eheran@lemmy.world 4 weeks ago
Legion739@piefed.zip 4 weeks ago
I don’t think I understand your question.
If you plug all your servers into a power strip like this, all the power goes through the power strip and through one cable. If there is a fault in the power strip, all the servers will lose power as a fuse will trip.
The same is true for my setup, I have added no new failure modes.
billwashere@lemmy.world 4 weeks ago
I’m assuming this is daisy chained. In a power strip there are not cables between the plugs that can be unplugged. Nor are there switches on each individual plug that can be accidentally flipped off. Any extra component is a failure mode. If it gets unplugged it loses power just the same as any failure. Now don’t get me wrong, I think this design is clean, expandable, and offers some neat features over a plain power strip, but to suggest there aren’t extra risks associated with this design is a bit short sighted.
Legion739@piefed.zip 4 weeks ago
You’re explaining scenarios where you incorrectly use this setup.
You can wire the switches so that if switched off it only kills power to that server and nothing else in the chain. You then basically have this: image
Yea if you rip out a cord that you shouldn’t you’re going to lose power, that is true of any power strip.
This has more components, so more things can fail, I will give you that, but that’s unlikely and for me at least, worth the trade off in making it modular.
chewypoops@lemmy.world 4 weeks ago
Power strips run in parallel that’s one point of failure for the whole rig.
Your setup runs in series. That’s on point of failure per powered device in the rig.
And if it doesn’t run in series, you really need to explain the wiring on the back of your rig, because I cannot make sense of it otherwise.
Legion739@piefed.zip 4 weeks ago
I have basically taken a power strip, and made each plug a module.
image the inside of a power strip, like in this image, is in series.
mains → yellow → red → blue → green → blue(end)
If Yellow is broken, it knocks out everything before it.
If what is plugged into yellow is plugged out, or disconnects everything else keeps working.
The same is true for my setup.
chewypoops@lemmy.world 4 weeks ago
I think I understand more now, I just fundamentally don’t understand that zig-zag of joins on the back if the point was better wire management.
Legion739@piefed.zip 4 weeks ago
Ideally the zig zag isn’t there, but did you see the before?
LastYearsIrritant@sopuli.xyz 4 weeks ago
His design is parallel, you’re just seeing it from the wrong perspective.
Legion739@piefed.zip 4 weeks ago
LastYearsIrritant@sopuli.xyz 4 weeks ago
It might be clearer to say it’s more kike your house wiring, instead of a power strip.
This is almost exactly how outlets are Daisy chained through a run.
Basically you have a homelab where every device is plugged into the next outlet along a wall, with each outlet being really close together.