Switch Cooling
Switch Cooling
Hey there, I just got a 48-port POE switch at a good price and was curious about its noise level. I’m planning to build a small enclosure for it and thought about using six Noctua fans for airflow and cooling. Since the unit is in my room, I assumed it wouldn’t be too loud. I’m considering using four intake fans and two exhaust fans, placing them directly on top of the switch to help dissipate heat. The two exhaust fans are just to keep the hot air out. I’m a bit concerned about whether this setup will provide sufficient cooling, especially given the switch’s internal components—there are six small fans (probably 20mm) already inside. I’m not sure about the power consumption but heard the maximum draw could be around 600 watts. I hope you can give me some advice or suggestions. Thanks in advance for your help!
If its a rack mount switch that uses those tiny vaccumm cleaner sounding fans then those are what it should be using as they move a ton of air over cheap consumer grade noctua fans
It's one of those situations. I'm concerned the air movement might not be sufficient and it could get excessively hot, which is why I'm reaching out. If my expectations aren't met, I'll have to install a rack elsewhere. Vacuum fans are meant for sealed enclosures, right? Shouldn't cooling be easier if the top is fully open? I'd consider adding more fans if you have any suggestions. If you think it won't perform well at all, then the rack is the best option.
They are built to work without needing a rack at first. Servers can be placed directly on top of one another over time. The rack exists mainly to simplify upkeep.
Typically, the cooling fins are built to direct fast air movement from the fans inside the sealed box. If you lift the lid, the flow of air becomes much less effective.
The switch should use no more than 30-50 watts under normal conditions with standard Ethernet cables and without Power over Ethernet features. The strong cooling vents are intended for environments with many connected devices using Power over Ethernet, such as a setup with 48 ports each drawing about 15 watts—totaling around 720 watts. You haven’t specified the exact switch model, so I recommend checking its datasheet or specifications. They often include details on ASICs and power usage. These switches are built with heatsinks to direct airflow across them, ensuring heat is expelled through small gaps in the front. If you upgrade the switch to a larger version (3-4U), you’ll need more space for ventilation, which can reduce the required fan speed while maintaining effective air movement. You can also use simple materials like cardboard or plastic foil to guide air through the heatsinks, effectively mimicking a lid effect.
Hey everyone, sorry for the delayed response and thank you for your messages so far. I understand the fans are built-in, but given my current circumstances and plans, I wanted to check if my cooling approach would work. Since I'm still moving items, I don't have the PC connected yet—apologies for the formatting and missing details. Attachments are pending and will be added soon.
I have a Switch model labeled "Baystack 5520-48t PWR." To avoid issues, I plan to use three Ethernet ports without PoE initially, and later add a few PoE ports as needed. I estimate around ten PoE ports total, with three standard ones and seven extra for flexibility.
I’ll open the switch to give you a clear view of the heatsinks and internal layout if that would be helpful. Let me know if you need more info.