We are running the free VMware ESXi. I am backing up my VM's using trilead. I have two nics in each ESXi host, Nic0 & Nic1.

Nic0 in all three ESXi servers is connected to a gig switch.
Nic1 in all three ESXi servers is connected to a separate gig switch.
And a Western Digital Worldbook is also attached to the second gig switch.

My average throughput when backing up my VM's seems to be 5 - 7MB/s or almost 20g an hour.

What do you use and how does your performance compare?