Summary: When it comes to testing out networking equipment, there are many ways to get performance numbers. 90% of the time network performance looks very poor due to Operating System restrictions and overhead as well as hard drive bottlenecks. It's not every system that can dish out 1000mbps (125MB/sec) read speed from a hard drive, let alone write data at that speed to the destination drive. It's for this reason that we use iPerf for our network performance testing.
Pros: Excellent exterior build quality, Feature rich, Managed Switch for a great price (TEG-160WS), Very affordable - Both for ~$150ea online, Excellent network performance