internal transfer speed

[Pallomino]

hej folks,
i have a AS6510T with following hardware setup:
10x WD Red 6TB Raid 10
2x Samsung SSD EVO 970 Plus Raid 0
10Gbe all the way to PC via switch

my write speed from PC to NAS is in average 450MB/s to the Raid 10 HDDs and from NAS to PC 750MB/s
the same goes for the transfer from and to the SSDs in Raid 0
question : shouldn't the write speed to the SSDs be faster in Raid 0?

and now my main concern!
the internal transfer speed between my volume 1 Raid 10 HDDs and and the volume 2 Raid 0 SSDs is always around 300MB/s no matter the direction or filesize
question : why the limited speed?
thanks in advance for responses
Pallomino

[Nazar78]

How was the transfer done?

[Pallomino]

copy and paste in windows explorer on win 10 pro dell workstation

[Nazar78]

That's normal and expected, which is to copy & paste from one samba share to another even within the same volume. What you're doing is actually downloading from the NAS from share#1 then transfer back to the NAS to share#2.

Use the ADM File Explorer in the portal to achieve better speeds for internal transfers.

[Pallomino]

ok
i try that and come back with results
thx

[Pallomino]

same speed in ADM File Explorer

[Nazar78]

Really? Then my assumption is wrong about ADM File Explorer, probably it does the same as mapped shares and I only use it occasionally. Most of the time I use command lines to do huge transfers. You can test the transfer speed in the terminal using dd or rsync i.e. `rsync -ah --progress /volume1/Download/10GB-source.txt /volume2/test-destination/`. If it still doing the same speed, then it's a good time to benchmark your arrays see where the fault is like using dd or hdparm.

[Pallomino]

thx
gonna try benchmark