Confirming gigabit ethernet link speed?

My Cloud OS 3 Personal & Network Attached Storage My Cloud EX4
1

I’ve just installed a gigabit ethernet switch (replacing a 10/100) and the PC has straight away connected at gigabit speed.

I’m currently writing 1.7TB from the (linux) PC to a JBOD drive at approx 9MB/s - this will take 3 days!  Based on other forum posts, I’m assuming with gigabit ethernet this should at least go into the 25-60 MB/s range.

I believe the issue is the EX4 is only connecting at 100MB/s - link light appears to be the same colour as the activity light, and in the web console the Network Activitiy graph only goes from 0 to 100 MB/s.

Am running the latest 1.05.30 firmware, and have swapped out 3 different patch cables (including the one the PC connects with at 1GB/s) but the console graph only ever shows max of 100 MB/s.

I’ve tried both ports on the EX4 as well.  I’ve tried telling the EX4 to use 1000 instead of Auto.

So a few questions:

Is the EX4 relatively fussy when it comes to negotiating link speed?  Can’t see much on the forums about this.

Do I need to reboot the EX4 between changing cables or network settings for them to take affect?

Does anyone know if the web console will dynamically update to show 1000 MB/s if it connects at that speed?

What colour is the link light LED supposed to be to connect at 1000 MB/s?  Should it match the activity LED?

Can I resolve this in less than 3 days?

2

Hi there and welcome to the WD community.

If everything is gigabit, you should be getting betters speeds than that, although in some cases if you have a lot of small files the speed is lower, but not like that, check if of the Ethernet port lights the color is green on both lights, also just to test try to connect the unit directly to the computer and see if the speed is similar.

3

try from different os ; it could the the cfs/smb protocol your linux workstation is using.

latest versions of mac and pc support SMB3 protocol