IOMeter is another open source synthetic benchmarking tool which is able to simulate the various loads placed on hard drive and solid state drive technology.
We set IOmeter up (as shown above) to test both backup and restore performance on a 100GB partition.
The DS418j had no problems dealing with the contents of the 100GB file used to test the backup and restore performance. Reading the data to the NAS averaged out at 101.38MB/s with writing the data back averaging at 92.94MB/s.