supacupa

Thank you so much for your help. I'll let you know how it goes.

I will need to install iperf. Which I'll do after I'm done preclearing a disk.

That's a very good point, but it seems to be that the network interface is the bottleneck. To test I have a 2 tb NVME that's it's own share that's speed limited to about about 370 MB/s, a RAM disk I've added to the server that's limited to about 370 MB/s, and the LibreSpeed docker can't get higher than about 4000 Mbps for download and 1867 Mbps for upload. If it helps: The server is a 22 core Xeon and it has 64 GB of RAM. I have several 12 tb SAS disks in the primary array and my cache array is made up of four SSDs with DRAM in RAID 1. I am able to achieve excellent speeds internally. Recently I was able to get over 1.8 GB/s out of the array while testing. VMs seem to be limited to 10 gbit which I believe is a limitation of the network driver.

Thanks! I've made those changes and am not seeing any differences. Do I need to restart anything in Unraid to see a change?

Yes, there are 1 gbit devices. I'll disable jumbo frames. Disable NIC Offload? is set to Yes in TipsAndTweaks, should I set that to No?

One of the steps I've recently taken was to disable flow control on my desktop, 40 gbit switch, and server. I went ahead and reenabled it on everything again and I can't seem to see any difference in it being on or off. I've found that file transfers run faster with jumbo frames enabled, though.

I have a Mellanox 40 gbit network card running in ethernet mode that's been installed in my Unraid server for some time. Before I installed Unraid, I was running Ubuntu server and able to get most of the speed out of my 40 gbit card. After switching to Unraid the speed dropped to around 4 gbits. I tried fixing the problem but eventually gave up due to other things I needed to take care of. After making some upgrades to my server I've decided to try and resolve this issue again so I can make full use of the high speed drives in my server. Unraid version is currently 6.11.5, but this problem has existed for the last few versions. Basically, I have no idea where to start diagnosing the issue. I do recall I was able to get 10 gbits out of the card during my attempts to resolve the issue in the past, but I really can't recall what I may have done to get that to happen.

Thanks! That helped a lot! I wish more people did this!

NAS, Game server, VM server, MySQL server, Web server, Home manager, Chia farmer, I use it for a lot of stuff. It's a 22 core Xeon with 64 gb of RAM, 17 SAS drives, and 4 SSDs used for cache. I have a 40gbit connection between it and my main workstation. Unraid makes managing everything so dang easy.

Thanks!!! This is exactly what I needed! Thanks! I'll look into the hot plug plugin. That sounds very useful.

I'm currently using Dropbox along with a docker that only allows Dropbox to work on a single disk and Sync.com in a VM with a USB drive passed through, but both options are pretty lame. I'd like something that could keep data safely on the array across multiple disks and also in the cloud.

Is it possible to connect a USB HDD without rebooting? I need to pass a few USB HDDs through to a VM, but it seems like I need to restart whenever I connect a new device which is very inconvenient. Is there a way around this?