May 16, 20206 yr Hi there, as mentioned above I am struggling with low write performance to my cache SSD over LAN. Here are the specs: - Asrock J4105 - 2x 4GB DDR4-2400 - 2x 10TB WD White Label - 1x Seagate Ironwolf 10TB -> Parity - 1x WD Blue 1TB SSD for cache Diagnostic file is attached. Any ideas? tower-diagnostics-20200516-1654.zip Edited May 16, 20206 yr by Civic1201 details added
May 16, 20206 yr Start by running a single stream iperf test to make sure network is working correctly.
May 16, 20206 yr Author When I try to run Quote iperf>iperf3 -c 192.168.xxx.xx it tells me "connection refused"
May 16, 20206 yr You need iperf3 to iperf3 or iperf2 to iperf2, it won't work with different versions.
May 16, 20206 yr Author Ok, test has been done: So the problem seems not to be network related right?
May 16, 20206 yr Just now, Civic1201 said: So the problem seems not to be network related right? Doesn't look like it is, enable turbo write and transfer directly to array, is the speed better or same?
May 16, 20206 yr Author Ok... - disabled cache for share - set reconstruct write - copy a file of 14GB to share So slightly faster, but not a huge improvement.
May 16, 20206 yr Speed being the same suggests a problem with the source, do you have another computer you could test width? Ideally one running Windows 10 since there are some reports of lower SMB performance for some with Linux or OSX.
May 16, 20206 yr Author OK, seems to be a problem with Ubuntu: This is directly written to the cache ssd from Win10 without any modification. Edited May 16, 20206 yr by Civic1201
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