CRS312-4C+8XG-RM 10G switch fan noise

RouterOS Beginner Basics
1

Dear all,

I purchased a CRS312-4C+8XG-RM 10G switch in replacement of my old switch.

It is installed in my living room..
I started with RouterOS and it made no noise.
Then I rebooted into swOS.

The fans are going crazy.
It is like if I were into a server room.

I am aware that the CRS312-4C+8XG-RM is a professional switch with 2 power inputs.
Is there a way to lower the fan speed?

Should I reboot into RouterOS for less noise?
I am using a normal setup with 5 vlans and mostly 1G speed.

I wonder why it makes so much noise.
Is there a workaround?

The CRS309-1G-8S+IN seems to have passive cooling.
Should I ship back the CRS312-4C+8XG-RM and buy a CRS312-4C+8XG-RM instead?

Kind regards,
FF

2

If noise is an issue for you, and having it in living room it clearly is, then you should definitely go for a passively cooled switch.

You can also decide to run RouterOS but it doesn’t guarantee that fans will be silent at all times, it just has a tad better temperature and fan control. If you are satisfied with 1Gbps speed then get a 1Gbps switch. It will both save you a few dimes as well as run much cooler. Beware of RJ45 SFP modules, they generally run pretty hot driving fan speed up.

3

Thanks. My old 1G switch has two upstream sfp connectors.

I might add a CRS305-1G-4S+IN with sfp direct-attach cable.
Or a CRS309-1G-8S+IN with sfp direct-attach cable.

Could be sufficient.

4

Update:

Dear friends,

I switched to RouterOS and it reduced the fan noise dramatically.
I need a better air flow in the cabinet and new fans and this will be Okay.

Kind regards,
FF