Hi, I stumbled upon a few threads but none of them seem to adress exactly my problem. My Problem: I have slow transfer speeds (read: 50MB/s, write: 20MB/s) with all 3 of my Windows 11 computers ↔ TrueNAS (latest Version) I have a two Win10 computers which have “great” speeds (read/write: >100MB/s …

Well, pardon me, I just found out what the problem was. I just realized that there is also one more difference in my setup… Since many, many years I am using Directory Opus instead of Windows Explorer and yeah, this seems to be the bottleneck. If I copy the files via Windows Explorer I do get 112MB…

Sorry - way too little detail to be able to make even the wildest guess about why.

I did not find a guideline which details I should provide and I was hoping that it is maybe a known issue or commonly known Win 11 (or TrueNAS Scale) misconfiguration which could lead to that behaviour (even though I did not find anything by myself). Also I do not know which details could be intere…

First step: check with iperf3: On truenas: iperf3 -s On Windows: iperf3 -c [truenas ip] Results should be nearly the same on all machines.

@awalkerix might be able to help as I assume this is an SMB-related issue.

I don’t see any difference between Windows 10 and 11 perf-wise, so no I don’t think it’s an SMB issue (or at least it’s very much an uphill climb to get there).

Ok, I just did the iperf3 check and from my main machine (Windows 11) I think I got pretty good results connection wise to the TrueNAS server. Connecting to host 192.168.178.50, port 5201 [ 5] local 192.168.178.216 port 53245 connected to 192.168.178.50 port 5201 [ ID] Interval Transfer …

That seems to be a well known problem with Directory Opus which dates back to 2018 and has been fixed in the latest version (however, updating to the latest version requires a paid upgrade, and since I have been satisfied with everything so far, I saw no reason to do so).

Slow SMB transfer speed (with Win11, Win10 works just fine)

TrueNAS General

prez02 January 4, 2025, 9:48pm 9

The second time a different file copy program has been the culprit, in this thread is has been teracopy.

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Slow SMB transfer speed (with Win11, Win10 works just fine)

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