dr> I'm using a 4B with a USB 3.1 HD. The HD does about 100MB/s (megaBytes)
 dr> read/write locally, and using Cyrstal Diskmark over Samba its showing
 dr> maximum transfer rate of 72MB/s read and 58MB/s write. When backing up
 dr> from my other Pis over NFS I'm seeing rates of 40-50MB/s.

Are *all* of your computers connected via ethernet? I am connecting FROM a
laptop on wifi, and was told that its not as fast/reliable... so; THATS
probably my bottleneck. :P

 dr> Check you are getting 1000Mb/s Full duplex using the command:-
 dr> ethtool eth0

On the Pi 3, which is connected via ethernet - I'm NOT.
On the Pi 4, which is connected via ethernet - I AM.

 dr> Also try another Ethernet cable (at least Cat 5e), as it wasn't until I
 dr> started using that Pi as a NAS did I find its upload speed was very
 dr> poor. Up to then it was only used for web browsing and its download
 dr> speed was fine. I think the cable had been kinked, replacing it restored
 dr> the upload speed.
 dr> 
 dr> ---druck

I think I was just misinformed, since I was trying to get the higher speeds TO
a Thinkpad T430s laptop connected via WiFi. I am going to connect said laptop
TO the ethernet and then retest on both the Pi 3 and Pi 4 NAS systems.... I
think this just might be me... user error.

:P 

But, I wouldn't have known and would have been pulling out my hair had I not
asked so... Hope this all makes sense to you, too; and I'm learning. I will
post the results with the laptop CONNECTED TO ETHERNET shortly.



|07p|15AULIE|1142|07o
|08.........

--- Mystic BBS v1.12 A47 2021/01/05 (Raspberry Pi/32)