March 15Mar 15 Community Expert Solution Hello to this community, would like to ask for some advice/suggestion/idea.Setup.Plain simple, array is is few 20TB drives, no RAIDs, no parity, no cache...1Gbit NIC.Copying from Windows machine (1Gbit NIC too) directly to \disk share speeds start at gigabit, but slowly drops to half.That's 10GB single file.I know that those are turtle speeds, but shouldn't drive sustain speeds at least around ~100MB/s?And what could cause those slowdowns?iperf tests shows that both machines can exchange at 950Mbits/sec. (should be at least around 100MB/s)same drives installed locally maintains speeds around 150MB/s, when same file is copied to it.SMB Multi Channel setting didn't changed much.Will add cache eventually, but yet not sure if same wont happen with even simplest SATA SSD.Solved.Settings > Power Mode > Best Performance or Balanced. Edited March 16Mar 16 by apx
March 16Mar 16 Author Community Expert 8 hours ago, JorgeB said:Please post the diagnosticsdiagnostics-20260316-1827.zipMeaning there may be other reasons for such behavior?
March 16Mar 16 12 minutes ago, apx said:Meaning there may be other reasons for such behavior?I missed the solved part, but yes, there could be other reasons; for example, if you were using zfs on the array.
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