trott Posted August 10, 2019 Share Posted August 10, 2019 Hi, I'm new to unraid, just processing move files from old HDD to array, I have observe something that I'd lik to clarify I have setup an array with 3 disks without parity at this moment, I'm manually mount old HDD and mv file to user share, the write speed is normal around 150-200M/s, and it is actually writing on disk 3, at the same time, I try to read some files from user share, as the files actually on disk 1, I was expectig the write activity on disk 3 will NOT impact this read activity, but in fact, it do impact the read speed, I only got 2-3M/s; After I stop mv activity, the read speed is back to normal around 180M/s, as I' m very new to unraid(still in trial), I want confirm if this situation is normal Link to comment
trott Posted August 10, 2019 Author Share Posted August 10, 2019 thanks pointing me for this thread, it seems it is a bug here 11 minutes ago, johnnie.black said: thanks pointing me to this Link to comment
trott Posted August 10, 2019 Author Share Posted August 10, 2019 it seems it do related to write activity, if there is no write activity, 3 concurrent reading from 3 disk share can both reach 150-200M/s Link to comment
JorgeB Posted August 10, 2019 Share Posted August 10, 2019 Yes, all reads or all writes on more than one disk is OK, latter one only really possible without parity, issue appears to be when there's a write to the array any other read becomes very low priority. Link to comment
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