You guys have weird datacenters. In all datacenters I've been, the switches were mounted on the backside. In the picture you're showing there's a huge open gap between the switches, making it unsuitable for cold-aisle hot-aisle operation
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we have 0 gaps between switches, and run R mount with R airflow, both on "everything cooled" DC and hot/cold isle.
Switches are deep enough not to need trays usually, some arista needs them "needs".
damn I hate the people running reverse mount, but F flow switches pulling hot air into cold isle, its a huuuuuge problem.
Switches are deep enough not to need trays usually, some arista needs them "needs".
damn I hate the people running reverse mount, but F flow switches pulling hot air into cold isle, its a huuuuuge problem.
That particular data center didn't have cold or hot isle containment and sealing every gap was not standard practice. However, ensuring front-to-rear airflow was enforced and luckily most of our access switches exhausted through the switchports. Interestingly, the Juniper and Cisco switches were the models that most often shipped with what I called a non-data center SKUs and exhausted out the PSU end. The Celestica switches in the image were all correct for data center edge installations.
It's not really that loud. I was surprised at how quiet it was. I was expecting it to be much louder.
I pulled one of the fans out and it does look they can be reversed quite easily.
I pulled one of the fans out and it does look they can be reversed quite easily.
The power supplies are directional and have fans too, if you flip the fan units around, you'll have to flip the fan direction inside the PSUs as well, or it will just circulate its own hot air in a big circle
In the past two weeks, I've fan-modded a few of these switches. The actual fans themselves are quiet when run at 30% max speed, but the PSU fans have an annoying whine to them.
I used Noctua NF-A20s in the power supplies as well as some 40x40x28mm quiet fans I had around and in both cases the switches get very acceptable for homelab use. The Noctua's raise the PSU temps by ~5C or so, but keep everything well within reasonable ranges.
Plenty of info on reddit, such as in this post.
I used Noctua NF-A20s in the power supplies as well as some 40x40x28mm quiet fans I had around and in both cases the switches get very acceptable for homelab use. The Noctua's raise the PSU temps by ~5C or so, but keep everything well within reasonable ranges.
Plenty of info on reddit, such as in this post.
Looking at the seller's other offerings it's clear to see he specializes in switches and related gear. He probably knows his market, knows when to hold them and knows when to fold them.
I deal directly with Dedicated networks and for work I order about a pallet a month of cisco and arista switches. They amazing vendor to deal with.
yea, my switch was professionally packed and in pristine condition. They even reset it to factory defaults which is a nice touch.
I've switched out all 4 of my regular fans for the Noctua NF-A4x20-PWM, and so far, things are good.
I will mod the PSU fans with two more Noctua later this afternoon, but this switch is nice.
It's in mint condition and has a set of new rails. There's nothing to complain about here.
Code:
System temperature status is: Ok
Alert Critical
Sensor Description Temperature Threshold Threshold
------- ------------------------------------ ------------- ---------- ----------
1 Cpu temp sensor 47.203C 90C 95C
2 CPU board temp sensor 29.000C 75C 80C
3 Back-panel temp sensor 27.000C 75C 85C
4 Board sensor 42.000C 55C 80C
5 Front-panel temp sensor 34.000C 55C 65C
6 Trident Bottom Right Outer 66.661C 100C 110C
7 Trident Bottom Left Outer 69.373C 100C 110C
8 Trident Top Left Outer 68.830C 100C 110C
9 Trident Top Right Outer 65.034C 100C 110C
10 Trident Bottom Right Inner 67.203C 100C 110C
11 Trident Bottom Left Inner 67.746C 100C 110C
12 Trident Top Left Inner 67.746C 100C 110C
13 Trident Top Right Inner 67.203C 100C 110C
PowerSupply 1:
Alert Critical
Sensor Description Temperature Threshold Threshold
------- ------------------------------------ ------------- ---------- ----------
1 Hotspot temperature sensor 35.000C 95C 100C
2 Inlet temperature sensor 33.000C 70C 75C
PowerSupply 2:
Alert Critical
Sensor Description Temperature Threshold Threshold
------- ------------------------------------ ------------- ---------- ----------
1 Hotspot temperature sensor 33.000C 95C 100C
2 Inlet temperature sensor 25.000C 70C 75C
System cooling status is: Ok
Ambient temperature: 27C
Fan speed override mode enabled at 30%
Airflow: back-to-front
Fan Status Configured Speed Actual Speed
---------------- --------------- ---------------- ----------------
1/1 Ok 30% 29%
2/1 Ok 30% 30%
3/1 Ok 30% 29%
4/1 Ok 30% 29%
PowerSupply1/1 Ok 30% 33%
PowerSupply2/1 Ok 30% 33%
Power Input Output Output
Supply Model Capacity Current Current Power Status
------- -------------------- --------- -------- -------- -------- -------------
1 PWR-500AC-R 500W 0.58A 4.75A 55.6W Ok
2 PWR-500AC-R 500W 0.84A 7.05A 80.6W Ok
Total -- 1000W -- -- 136.2W --It's in mint condition and has a set of new rails. There's nothing to complain about here.