benchmarking hardware RAID with VeloSSD yields a 20 time acceleration factor of.
Step 1: Benchmarking the host storage:

Step 2: Benchmarking the SSD:

Step 3: Benchmarking the host storage equipped with a VeloSSD cache:

Conclusion: although the setup on a hardware RAID degrades SSD performance.
VeloSSD accelerates the RAID by an overall factor 20.