Alright, so I'm copying some of this over from the end of another long thread, but the situation is this:
I have a 72 port 10G switch. It sounds like a leer jet. I want it to be quiet.
Attempt #1 (swapping out fans for 40mm Noctuas):
While converting the Sunon fans to the Noctua's I made the change one module at a time, checked the switch via terminal and the led's on back, and each time it was happy. Temporary end result = silent switch that was maintaining a temp of ~31DegC!
What I did not do was reboot the switch....
Now having rebooted, I'm locked out due to "fan failure". I replaced 6x 4 wire PWM fans with 6x 3 wire non PWM fans... because it didn't lock me out as each group was swapped, I made the (incorrect) assumption that it would let me run like that as long as temps stayed in check.
Apparently it will not.
Does anyone have a technical paper explaining exactly how PMW works? I have to assume that the switch is determining fan function based on the PWM signal... so what's the best way to feed it false info? Is it simply a voltage signal (I'm assuming not.. hence the "pulse" in PWM".
I'd rather go back to AOL dialup than listen to the Sunon fans run 17K RPM.
Other Possible Options:
1. Water cooling the damn thing (complicated/overkill/cool & silent)
2. Building/buying a new chassis that allows for larger fans and transplanting the internals (also a pita, current internals are well engineered with ducting/flow control... hate to tear that up).
3. Building a 2U cover for the existing base chassis... would have to rebuild internal ducting, but not too bad.
4. Building a plug and play hot swap adapter for each of the three fan modules allowing for a larger fan (overhanging the main chassis). This appeals to my inner engineer and is probably the cleanest/coolest option... would take some fab work to do it right. I can get one of our packagers to cut it out if I put together the drawings, but still not a get it tonight option.
5. Cutting a hole in the top cover just in front of the existing fan modules and mounting two PWM Noctua industrial 120mm 3K RPM fans... This is easy and definitely a get it done immediately option... but it feels akin to putting "spinners" on a 911 Turbo... such a nice switch; hate to rice it out. This would also be pulling intake air from the top of the rack which is not ideal... I suppose I could add some ducting to pull from the front of the rack, but now we've got spinners, neon under chassis lighting, and a wing out back
Pictures of the switch in question:
Who is selling these??
Any thoughts?
I have a 72 port 10G switch. It sounds like a leer jet. I want it to be quiet.
Attempt #1 (swapping out fans for 40mm Noctuas):
While converting the Sunon fans to the Noctua's I made the change one module at a time, checked the switch via terminal and the led's on back, and each time it was happy. Temporary end result = silent switch that was maintaining a temp of ~31DegC!
What I did not do was reboot the switch....
Now having rebooted, I'm locked out due to "fan failure". I replaced 6x 4 wire PWM fans with 6x 3 wire non PWM fans... because it didn't lock me out as each group was swapped, I made the (incorrect) assumption that it would let me run like that as long as temps stayed in check.
Apparently it will not.
Does anyone have a technical paper explaining exactly how PMW works? I have to assume that the switch is determining fan function based on the PWM signal... so what's the best way to feed it false info? Is it simply a voltage signal (I'm assuming not.. hence the "pulse" in PWM".
I'd rather go back to AOL dialup than listen to the Sunon fans run 17K RPM.
Other Possible Options:
1. Water cooling the damn thing (complicated/overkill/cool & silent)
2. Building/buying a new chassis that allows for larger fans and transplanting the internals (also a pita, current internals are well engineered with ducting/flow control... hate to tear that up).
3. Building a 2U cover for the existing base chassis... would have to rebuild internal ducting, but not too bad.
4. Building a plug and play hot swap adapter for each of the three fan modules allowing for a larger fan (overhanging the main chassis). This appeals to my inner engineer and is probably the cleanest/coolest option... would take some fab work to do it right. I can get one of our packagers to cut it out if I put together the drawings, but still not a get it tonight option.
5. Cutting a hole in the top cover just in front of the existing fan modules and mounting two PWM Noctua industrial 120mm 3K RPM fans... This is easy and definitely a get it done immediately option... but it feels akin to putting "spinners" on a 911 Turbo... such a nice switch; hate to rice it out. This would also be pulling intake air from the top of the rack which is not ideal... I suppose I could add some ducting to pull from the front of the rack, but now we've got spinners, neon under chassis lighting, and a wing out back
Pictures of the switch in question:
Who is selling these??
Any thoughts?