I finally built my first server after hearing about unraid for the past 8 years; I love the features presented so simply to use. However, I'm having a lot of trouble on the initial fill up of data.

 

I installed a krusader docker and tried copying files from a USB 3 HDD mounted to unassigned devices. The copy speeds hover around 20MB/s which is painfully slow for the 20TB transfer i have to do. I did disable parity and cache for the initial transfer due to the huge amount of data. I even tried with NCQ enabled but it makes no difference. What bugs me is that if I plug the same USB to my PC and drop the folder to UnRaid, It saturates the gigabit line and transfers at 125MB/s. I don't want to run two PC's to transfer from a HDD that can be mounted to the server directly. The USB is formatted as NTFS if that helps. Am I missing something? I'd really appreciate any help or advice regarding this. Also, I'm running UnRaid 6.7.2 stable

 

Thanks a lot in advance!

Edited August 30, 20196 yr by Badar

Post Diagnostics taken when transferring. 

Try rolling back ta 6.6 version of unraid.

 

You could be seeing this: 

 

3 hours ago, trurl said:

Post Diagnostics taken when transferring. 

I've attached the diagnostics file just taken after initiating transfer again. Copy speeds were 21.9 MB/s.

 

@dalben I can definitely reinstall older version onto USB and try again. Then upgrade to latest version after data is on it?

tower-diagnostics-20190830-2352.zip

Or stay on 6.6 until the issue is resolved.  But yes easy upgrade to 6.7. 

20 hours ago, dalben said:

Or stay on 6.6 until the issue is resolved.  But yes easy upgrade to 6.7. 

Tried with UnRaid 6.6.7, unfortunately speeds in krusader still around 24MB/s, I may eventually have to network dump the data onto it. 

 

Really hoping someone has a solution based on the zipped diagnostics I uploaded. It's probably something simple

If you install the Fix Common Problems App does it say anything about Write Caching?

3 hours ago, Squid said:

If you install the Fix Common Problems App does it say anything about Write Caching?

I checked that App and it doesn't say anything about write caching. So I googled and tried the linux command to check the drive and it says write caching enabled, That should be good right? . I'll attach the results to reconfirm that. Thanks for the advice to check this too.

 

root@Tower:~# sudo hdparm -i /dev/sdc

/dev/sdc:

 Model=WDC WD100EZAZ-11TDBA0, FwRev=83.H0A83, SerialNo=JEJS4B5N
 Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=56
 BuffType=DualPortCache, BuffSize=unknown, MaxMultSect=16, MultSect=off
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=19532873728
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes:  pio0 pio1 pio2 pio3 pio4 
 DMA modes:  mdma0 mdma1 mdma2 
 UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 
 AdvancedPM=yes: disabled (255) WriteCache=enabled
 Drive conforms to: unknown:  ATA/ATAPI-2,3,4,5,6,7

 * signifies the current active mode

 

Edited September 1, 20196 yr by Badar

I got the same issue and can not fix it yet. 

However, I tried to transfer data via samba in win10 which is a VM built on unraid and then got full speed about 100~200MB/s .