[Very slow transfer speed to array (3 -8 MB/s)]

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

[Very slow transfer speed to array (3 -8 MB/s)]

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

[Very slow transfer speed to array (3 -8 MB/s)]

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?

[Very slow transfer speed to array (3 -8 MB/s)]

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.

 

[Very slow transfer speed to array (3 -8 MB/s)]

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

[Very slow transfer speed to array (3 -8 MB/s)]

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

[Very slow transfer speed to array (3 -8 MB/s)]

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

[Very slow transfer speed to array (3 -8 MB/s)]

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.

[Very slow transfer speed to array (3 -8 MB/s)]

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

[Very slow transfer speed to array (3 -8 MB/s)]

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

[Very slow transfer speed to array (3 -8 MB/s)]

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

[Very slow transfer speed to array (3 -8 MB/s)]

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

[Very slow transfer speed to array (3 -8 MB/s)]

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