@ spazoid & Marios,

Thanks guys.

So if I understand correctly the benchmark results distorted by cache, which I guess is the same regardless if it is on a dedicated raid card or if it is built into the SSD itself (?) Does that mean that benchmarks are OK if there is no cache in the equation?

If the benchmarks are written for HDD and are accurate for HDD that use cache are those results also not affected in the same way?

@ Marios, thanks for this. I will try it out.

I'm using hard raid for two reasons, first for capacity and second because I find it is much more stable than onboard raid. All I'm really bothered about is finding the optimum strip size.