Hello,
in my NAS i have a miniPCIe 2 Sata Raid Controller:
https://www.amazon.de/gp/produ…age_o00_s00?ie=UTF8&psc=1
Specifiaction: 3GB/s
According further the specification for miniPCIe is 5/2.5Gbps.
Let me calculate with 2.5Gbps, this should mean a possible transfer rate via miniPICe of 312MB.
My Mainboard:
http://www.asrock.com/mb/AMD/AM1H-ITX/
runs with SATA-3, 6GB/s
This are theretical transfer rates. Let´s assume of a practical transfer rate of 1/3 i should get round about 100MB/s.
Now i copy directly on the NAS terminal with Midnight commander a full 2GB HDD to another. And what i see don´t make me happy.
Only 10,23MB.
Okay think there is another factor? The Harddisks. I use on the source side a 2GB Western Digital Red and on target side a 4GB Western Digital Red in Raid1.
Now the Red HDDs from Western Digital only runs with 5400rpm. The transferrate should be 150MB/s.
https://www.amazon.de/interne-…r=8-1&keywords=wd+red+hdd
Okay also there lets assume from 1/3 ther should be round about 50MB/s.
This is round about my expectation.
What do you think about this?
Running Debian Wheezy with current stabel OpenMediaVault 2.2.16 with Kernel 3.16.0, think this should be backport kernel.