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 DS918+ performed well in our backup/restore tests across the arrays. The RAID 5 performance of 102.11MB/s for backing up the data and 104.71MB/s reading it back is very strong. When in RAID 6 and RAID 1 modes the performance dips below the 100MB/s level for both reads and writes.