Im running into trouble, when connecting to my NAS through SMB:
Windows 11 to TS-431XU with QTS 5.2.3.3006 Build 20250108
They are connected through 10GbE Links with a Unifi Switch inbetween.
Reads are 500-800MBps, so hardware seems to be fine. 4 HGST HUH721212ALE604 Disks in RAID5 SSD cached.
I had the issue also with downloads. But after deactivating SMB Signing, the download speed increased dramatically, but the upload still faces 14-15MBps.
i tinkered around a little bit and can nail it down to tcp config issues.
Tested with iperf3
w11 → NAS: 2Gbps
w11 → server2022: 2Gbps
server 2022 → NAS: 6Gbps
Server 2022 ↔ w11: 0.2Gbps
So, its someting with windows 11 and I have no idea what…
Thanks for the hint. I already deactivates SMB-Signing which brought me to faster RX, but TX is still FUBAR.
I now completely switched of encryption - still just 20MBps on the 10G Link