It is running on a 1U Dell PowerEdge SC1435 server with 2 x Dual core AMD Opteron, 8 GB RAM. I am running the open-e as a VM with 2 vCPU and 1GB RAM. It is just for my lab platform so I am not after great performance. If I use Nexenta I can get about 8-10 MB write rate with freenas reaching 12-13 MB. I had created a snapshot on the iSCSI volume on open-e yesterday, I have deleted it and also changed the iSCSI setting from block level to file level. After that I have reached write rate of 18-20MB but in the middle of the copy the write speed gone down to 0 again and I had to reboot the whole system.
I had a look at some best practise guides and it seem very straight forward installation both on server and client side.
What size or kind of files you tried to copy and/or how much file they are.
after you do a reboot for the whole system, does it work fine? or you face the same issue again?