Faba

I think we can close this topic I bought 3 new IronWolf Nas drives, preclear them and used them. I'm getting about 120 MB/s on average. thanks Faba

Next Update:- I took only the two "fast" disks and created a new Array Data + Partity and I'm copying 100 MB/s on average for 40 GBs. Somehow unraid doesn't like some disk. Using Ubuntu I get the same 80-100 MB/s with the "slow" disks

At the moment I'm moving the disks to other Hardware and run Unraid there to see if I can see a difference. I didn't use Turbo mode explicitly, how or where do I enable it?

Did another test to figure out what's going on. I removed one of the disk which ran very slow during preclear. Formatted to et4 mounted to ubuntu and copied a file to it. sent 18.32G bytes received 35 bytes 97.72M bytes/sec total size is 18.32G speedup is 1.00 Thats the same source from my inital post. so to summarise when I copy to the disk with 4-5 MB/s when in the array when its not I have 97 MB/s on average. Seems to me an unraid issue rather than a physical disk issue.

I started a preclear on the rest of the disks of the array. All connected to the same controller 2 run at about 183 MB/s, 3 at 10 MB/s Something is going like you said, but still don't know what I did switch the cables between a fast and a slow disk but nothing changed, so I wouldn't blame the cable

Running a preclear on one of the disk almost an hour on average 190 MB/s, I'll wait and see

So I did install the speed test docker container and here are the results for all five array disks plus one not in the array for comparison: I also copied a file over wifi, starts around 20 MB/s stays there until about 37 % an then drops off to 6-8 MB/s sassrv-diagnostics-20181020-0727 (1).zip

OK so the should be replaced in the near future? Strange the work better without unraid. Maybe I remove one from the array and test them.

I was battling heat problems in the summer and reworked the cooling. Parity look OK after running for some time. I always copying files at least a couple of GBs so I can achieve so kind of speed. Didn't even notice it went up to 72C

I did the test with all array disks connected to the Motherboard SATA ports with AHCI enabled. it starts like before aroung 110 MB/s and droppen down to about 16-20 MB/s with dips down to 7,5 MB/s. Logs taken during the test are attached. thanks for any kind of help solving this. Faba sassrv-diagnostics-20181019-1711 (2).zip

I tried krusader, rsync or mc. Always on the server from internal to internal disk on the same controller

I'll do it and post the results. Might take some time because hardware access is quiet cumbersome.

Hy, I'm trying to move my linux fileserver over to Unraid but hit a very large bump in the road. When copying to the array im getting mostly 3-8 MB/s writing speed. Here is a little background about the server. - 10 x 8TB Seagate Archive disks (not the fastest I know) - Connect to an Adaptec 71605e (tested with an older an current firmware) - 5 of those disks are in an array 4 Data + 1 Parity - the other 5 are still simple ext4 formatted - there is no network involved I'm using the unraid terminal to copy between them - I get about 80-100 MB/s using the Non-array disks and ubuntu or the unraid terminal - When copying data from non-array to array it starts with about 110 MB/s and quickly drops to about 8 MB/s - Also installing the Krusader Docker container took about 5-10 min to extract the images and writes speed also very low I've attached my diagonstics if something is missing let me know. Thanks Faba P.S.: I bought Unraid OS Pro sassrv-diagnostics-20181019-0727.zip