I have: 1) NAS server, 24 x SSD in stripe of 3 x raidz2 as main pool, 8 x HDD raidz2 for surveillance video adn X550-T2 2) Backups server 11 x HDD in raidz and 4 HDD in stripe of mirrors (zfs or course), x540-T2 3) Workstation, Samsung 960Pro, x540-T2 All of them connected to CRS-317 with 4 x S+RJ10...

Sure, got it on Amazon, here is the link:

https://www.amazon.com/gp/product/B077V ... UTF8&psc=1

What kind of FLIR did you use?

Here is my workaround solution. Temperature now managed around 50C degrees.

Here is what I've got. - CRS317 + 2 x S+RJ10, both L2MTU are set to 10218; - Windows 10, X550, MTU 1500, 3m UTP5 patch cord (manufactured); - Centos 7, X540, ixgbe last vesrion, MTU 9000, ~5m UTP6 patch cord (self-made); iperf3 -c 192.168.1.4 -t 30 Connecting to host 192.168.1.4, port 5201 [ 4] loca...

Yep, have the same issue. Seems to be about 70 C. Methodology to measure was quite simple. I used less reflective than SFP module cases screwdriver bit and put it on three SFP+ modules. And when it got hot (in a few minutes), measured temperature with laser thermometer. This methodology is not ideal...

Upgraded software version up to 6.42rc52 to get HW Offload for LAGs. Surprisingly found out that fans working quietly. Speed fluctuating for about +/- 100 RPM. When temperature goes down and gets lower than 39 fans are stopping.

I've observed this also a couple of times after 2-3 weeks of uptime. Then the fans seem to keep their last state (RPM) and even when the temperature is below 40C they don't stop anymore. I already opened a ticket once and they first suspected a hardware issue, but as the fans start to bahave well a...

After temperature went down to +32-34 CRS317-1G-16S+ isn't stopping fans. Is it normal? Is it possible to stop them?

After CPU temperature went down to normal (~32-34 C) both fans on CRS317-1G-16S+ keeps working.
Is it normal? How to fix it?