Use a proper benchmark tool, not one intended for desktops.
http://www.iometer.org/doc/downloads.htmlAlso you should be testing random IOps, multiple threads and large queue depths. The system isn't designed to go as fast as possible in a straight line e.g sequential throughput. It's intended for consolidation of multiple mixed workloads all running in parallel. Make sure you are testing against a large enough data set, also have a look at what the 3PAR is actually doing from the IMC performance charts. You'll probably find it's actually sat idle waiting for some work to do, because you aren't feeding it enough requests.