Mysterious read speed cap around 300MB/s on both pools (4xNVME stripe, 24xHDD striped mirrors) in beefy server

Hi,
Reading this reminds me a lot of the issues I have been noting as well when I recently switched from CORE to SCALE and introduced a RAID10 setup with 4x 20TB HDDs. We haven’t figured out the issue yet as well, but I’ll link our thread here as well as maybe this could be a related issue:

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