March 15, 20224 yr Hello! I need help because I am having difficulty achiving the full speeds of my network and NVME drives using UNRAID. I have the following: - Windows 10 Client with a Samsung 980 PRO 1TB NVME - UNRAID server with a Corsair MP600 1TB NVME Cache drive and DirectIO enabled - 10Gbps Ubiquiti Network with both client and server connected on the same switch, and them and the switch have JUMBO FRAMES enabled at 9014 bytes. - CAT8 cables running to the devices with no more than 6-8 meters on each client 1º Problem: I am unable to get 10gbps connection to the UNRAID server, max is about 6.7Gbps, as stated in the image bellow: Anyone knows what may be happening? 2º Problem: Altough when copying a file from UNRAID to WINDOWS is stable and almost near the speed of the test, at about 777MBps (6.07gbps) When copying from my computer to the UNRAID cache, the speed is very inconsistent (sometimes worse than the image) and maxes around 500MBps The disk being used as cache is capable of well over 10gpbs speeds when writing as can be seen here https://ssd.userbenchmark.com/SpeedTest/843047/Force-MP600 What may be wrongly configured to cause this? Enabling DirectIO did not improve write speeds, but increased drasticly the READ speeds, and that goes against the info on the toggle. Thanks for the help Edited March 15, 20224 yr by TZodiacK
March 17, 20233 yr Hi, same problem here... stuck at 160MB/s when i copy from PC to Unraid cache SSD... From Unraid cache SSD to PC i have about 700MB/s stable... (with 10Gb ethernet tx401 tp link) My unraid build has 2 SSD 980 PRO 1TB in one pool cache raid 1 with encryption CPU is ryzen 9 5950X with 32BG RAM ECC I tried direct write to /mnt/cache but it is exactly the same ! sad... Edited March 17, 20233 yr by Bender Seb
March 17, 20233 yr Community Expert Start by running a single stream iperf test in both directions to confirm LAN is OK.
March 17, 20233 yr If i put MTU=9000 on both sides; it is better... SMB multichannel allowed full speed for transfert from unraid to PC, but in the other direction (PC to unraid) there is only one channel... so packet size matters i suppose... MTU=9000 here But my applications are not reachable from outside of my network behind my commercial router... iperf indicates full speed with 5 parallel streams but can't offer more 2 Gb/s with just one stream... So it is a network bottleneck...
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