Ventilation Suggestions?

Nafe92014

Hey all,

I just received my 2960 and 1841 in the mail to add to my lab for my studies. However, with it being 26 degrees Celsius outside, I'm wondering if this is enough space in my rack between each device? I keep my window and door open for adequate airflow and have a fan in the room as well.

TacoRocket

Nafe92014 wrote: »

Hey all,

I just received my 2960 and 1841 in the mail to add to my lab for my studies. However, with it being 26 degrees Celsius outside, I'm wondering if this is enough space in my rack between each device? I keep my window and door open for adequate airflow and have a fan in the room as well.

It's not really the space in between but the intake and outake fans that are located either in the from or the back.

DoubleNNs

In data centers, engineers actually try to ELIMINATE space between chassis, to improve airflow. Of course, they use hot/cold aisles so it's a different concept. But I don't think increasing space between the units would help that much, unless each actual chassis was getting extremely hot to the touch.

OctalDump

DoubleNNs wrote: »

In data centers, engineers actually try to ELIMINATE space between chassis, to improve airflow. Of course, they use hot/cold aisles so it's a different concept. But I don't think increasing space between the units would help that much, unless each actual chassis was getting extremely hot to the touch.

Yeah, this.

These are designed for taking air from the front, and exhausting it out the back. You need to make sure that there is adequate room at the back for the hot air to exhaust, and adequate cool air coming in the front. The gaps between the units can impede the designed cooling process, but I suspect in a small rack like this, it won't do much difference either way. Just ensure that the hot air can escape, and that you are feeding in cool air. Maybe point the fan or aircon at the front of the rack.

iBrokeIT

The simple solution would be to "copy run start" and shut it all down when it is not being used

pinkiaiii

not sure about front since havent seen any fans on routers or switches having them,so mostly back,depending how hard its to crack open them id clean fans on every one i could-specially if you had them a while and they have years on them,since dust is what usually fries hardware.

also not sure it any of the switches have integrated temp control monitoring on them to see what actual temps they run on.

but if i had smth simillar and invested good bit,id look for glass cabinet to place them all in,dozen quality fans to make intake exhaust setup,thus having row on bottom and pulling out at top where heat rises.that said if your working constantly on them cabinet wouldnt be best when needing to switch cables often thus maybe few slim 120mm fans on each to either cool hot spots or help pull air out.

Sy Kosys

pinkiaiii wrote: »

also not sure it any of the switches have integrated temp control monitoring on them to see what actual temps they run on.

#sh env temperature

The temperature keyword was added back in 12.2, and with my 2960/3560 running 15.0 the output of sh env temp is simply "system temperature is ok" with no actual values.

#sh env temp status
System Temperature Value: Not supported

Which may mean the sensors don't exist on the older hardware for the OID's to properly monitor. <--- not an expert on this

I second post #5 above. I turn mine off nightly as I generally only have about 3hrs per weekday for study. No sense in wasting power for 21hrs a day, generating unnecessary heat.