Martin_german wrote

Is the new TL-SG2428P switch still as noisy as the T1600G-28PS

Unfortunately, yes, it's pretty noisy.

Dear Mitya,

every fan makes noise, even super-silent ones like those from Noctua (which I love).

Question is whether the noise is at an annoying level and that might differ for different people. For example, the usual noise floor (sound pressure level) in my office is ~35 to 39dB, that's a bit louder than a silent room. Noise comes from the machine room over the floor, if I close doors, it's gone, but some still comes through a big cable duct despite foam sound isolators in the duct.

It doesn't bother me, because my hearing filters it out; also I don't hear as well as when I was young. But when my friend calls who is a professional piano tuner, he hears the fans from the machine room through the phone. Unbelievable. I sometimes don't even hear the phone ring, it's nearly as old as me and the ring speaker must have dissolved in 10,000 particles meanwhile. :-D

On the other side of the valley, where I live, there is a train line running virtually through the living rooms of the people there. When you visit them, you won't understand a thing when a train rushes through. But they can sleep at night, despite much traffic there. They just got used to and also filter out the noise.

That being said, I was surprised that the new SDN switch TL-SG2210MP has a super-silent fan built-in, which IMO makes much lesser noise than the one in T1500G-10MPS, at least from what I remember when I last had a T1500G here that buzzed like a wood saw when being turned on. »Much lesser« here means I don't hear the TL-SG2210MP's fan among other background noise.

TL-SG2428P has two fans, yes. They make noise which would bother me if the switch would be deployed in my office (it's actually there, but I move it to the machine room soon). But if you use a PC with a standard fan (not a silent one) in your office, you probably would not be bothered by the switch's two fans in the same office.

This is what an Android app for sound pressure measuring reported (right click and open image in new tab to zoom in). Distance to the switches ~ 20cm. Ignore the spikes, they came from fiddling with the buttons to make screen shots. Note that I measured almost idle switches, only one EAP powered up on the TL-SG2210MP. To get an idea what the numbers mean: a car outside my office does have a sound pressure level of ~85dB.

I would like to hear other user's experience with TL-SG2210MP, for me it seems that TP-Link did use better fans than those used in T1500G-10MPS.

Why not in TL-SG2428P? Hey, this switch provides up to 250W PoE budget, this needs two fans for cooling and such switches are in machine rooms which often have a SPL of 90 dB and more.

Martin_german wrote

The TL-SG2428P switch is definitely not a core switch and is therefore not located in a deticated server room.

Ehm, T1600G-28PS was just a new model name for former model TL-SG2424P and TL-SG2428P now is the SDN successor of T1600G-28PS, but with pimped PoE budget of 250W. It's in the same class as the T1600G line and I will use it as a core switch no matter whether you think it is not suitable as a core switch.

Since the Omada controller is an (authorized?) copy of the Unifi controller

What are your primary sources for accusing TP-Link here of making an (unauthorized?) copy of the UniFi controller? Hearsay? Guessing?

Can you imagine that there are third party companies who design the software for chipsets used in product lines? The Pharos software was developed by the same company which did create UBNT's AirOS and Omada Controller was probably being developed by the same vendor who developed the Unifi Controller. The times where each hardware manufacturer develops its own software are gone since long and costs for developing such a software are much too high to sell it exclusively on the market.

let's compare the Switch USW-24-POE with the TL-SG2428P. The data sheet of the Unfi Switch says "The UniFi PoE Switch features fanless, silent thermal cooling, so it
can be deployed in areas where fan noise would be distracting.

You compare apples with pears. The USW24-POE has only 95W PoE budget, no wonder it can do without a fan:

If you want to power EAP225s with an USW24-POE, you can use 9 PoE ports to power 9 EAPs and 15 PoE ports are just wasted.

If you use a TL-SG2428P you can use all 24 ports to power 24 EAP225s.

Don't get me wrong: It's fine to compare apples with pears. But if you need a pear, buy a pear. Don't try to find an apple shaped like a pear and tasting like a pear, in the end it won't be a pear.

But had I known that you were interested in apple/pear comparisons, I would not have bothered to answer at all.