My DS1819+ was connected via 4-way GB bond to a multi-gigabit LAN (2.5 Gbit switches all around). My transfer speeds (copying large files back and forth) was 75 to 80 MB/s or around 600-650 Mbit/sec.
I installed a new 10Gb Ethernet and M.2 Adapter Card E10M20-T1 (which has a 10 GB ethernet port) and switched to that as the connection to the LAN. To my surprise, my transfer speed dropped by half. I now only get around 40 MB/s.
I changed back to the 4-way bond and speed went back up to 80 MB/s.
What am I missing? Is this expected behavior? If so, what is the point of the 10GB port/card?
Update: I have since deleted the 4-way bond (4x 1Gb ethernet ports) and created a new 5-way bond (4x1 Gb plus the 10Gb port), as an experiment.
As my switches are all 2,5Gb, the bond now shows 4x 1Gb full duplex and 1x 2.5 Gb full duplex for a total theoretical max of 6.5 Gb full duplex.
BUT: if I copy a large file from NAS to laptop, I get 90-92 MB/sec (fine). When I copy the same large file the other way around, from laptop to NAS, I only get 40 MB/sec.
What could be causing that?
I installed a new 10Gb Ethernet and M.2 Adapter Card E10M20-T1 (which has a 10 GB ethernet port) and switched to that as the connection to the LAN. To my surprise, my transfer speed dropped by half. I now only get around 40 MB/s.
I changed back to the 4-way bond and speed went back up to 80 MB/s.
What am I missing? Is this expected behavior? If so, what is the point of the 10GB port/card?
Update: I have since deleted the 4-way bond (4x 1Gb ethernet ports) and created a new 5-way bond (4x1 Gb plus the 10Gb port), as an experiment.
As my switches are all 2,5Gb, the bond now shows 4x 1Gb full duplex and 1x 2.5 Gb full duplex for a total theoretical max of 6.5 Gb full duplex.
BUT: if I copy a large file from NAS to laptop, I get 90-92 MB/sec (fine). When I copy the same large file the other way around, from laptop to NAS, I only get 40 MB/sec.
What could be causing that?
