Slow file transfer

Last weekend was one of awe, shock and surprise for me when I proudly connected my brand new NV+ to the network inserted 4 x 2T WD drives and after waiting over an hour the setup button still didn't become available on the RAIDar software.

After a little over an hour of waiting I powered down the device and removed three disks, leaving a single one in bay 4.

The system initialized and was ready after about 15 minutes of waiting. I hot inserted the second drive into bay three, and after about 45 minutes of waiting I got a bad disk error...
Lucky it was a brand new disk, so I took it back to the store for replacement.

With a new disk at hand, I powered down the device, re-inserted all the four disks, powered on the device and went out to lunch and to play football with my 3.5 yr old son. (morale: avoid hot swapping if you can...)

I came back three hours after, checked in front view and saw that I had less than the expected 8TB disk space... OK... after doing some searching / reading I found out that the device automatically configures RAID-X and I had to do a factory reset, select flex-raid and raid level 0 to get what I want... WOW...

This time around the system startup took a little less than an hour...

Ok, I now have my desired 8T of disk space and decided to start copying my media files et al (about 7T) to the NAS...

I selected about 980G of data on first PC and copy / paste to the first drive in the NAS... and... wait a minute... 13MB/s transfer speed :shock: ...

This must be a joke, I tell myself... my house is wired CAT6 Gig Ethernet with a Cisco switch and a Cisco WVSR4400N Gigabit router... pretty state of the art for a home network with three PCs and two laptops...

Anyway, I've been working with Cisco equipments for more than a decade, so I switch to troubleshooting mode...

I fixed speed / duplex on the PC NIC to 1000 / full, installed wireshark on the second PC and set port monitoring on the switch to copy traffic going to the NAS to the second PC...
Wireshark revealed no errors, I looked on the NAS itself the network had zero error on all parameters... isn't this great...

After further analysis, I decided to insert a network card into PC and stop using the onboard network card... I installed the latest drivers, setup jumbo frames and all what not and tried again...

This time the transfer speed hit 22MB/s with the new network card... still not quite impressive for a device that is advertized to handle Gbit ethernet speed...

I came on the forum only to find out that I am not the only one... what a shame... I saw some mentioning that the device became crippled with a new firmware upgrade... etc... etc...

Since Sunday evening till now, I have succeeded in copying 2.5TB of my 7TB of data... I hope all the copying will be completed by Friday...5 days to copy 7TB of data on a clean Gb switched network...

After the copying is finished, if the device is not able to concurrently stream video properly to at least the three PCs without issues, I will be sending it back for refund...

My impression is not the best so far...

I will like to know if a downgrade of firmware can help, and where to find older versions of firmware...

Fingers crossed...