The 64K random read and random write tests may be OK, but I would not call them spectacular, especially the 64K random write.

You should probably test again, adding more threads, until you reach an average Avg_Latency in the range of 25 to 50 ms, to find the maximum throughput it can sustain.

If possible, increase the size of the test file to make sure you are measuring the disk speed and not the SAN cache speed and size.