With multiple clients, we saw up to 180 MB/s in read and write, under heavy throughput. Performance peaked with four clients and is where I would expect it to be for such a server. The RAID 6 configuration sets the limits here, and we are pretty sure RAID 5 would yield better results. However, we make a point of conducting our multi-client tests in RAID 6 with those NAS servers that support it.
CPU utilization was below average, and RAM utilization was very low. The highest power-consumption figure in these tests was 52.5 W.